Rui Araújo – Publications

Duy Ngoc Dang, Tri Minh Do, Rui Alexandre de Matos Araújo, Khang Hoang Vinh Nguyen, and Can Duy Le. Ultrasonic sensor modeling with support vector regression. Sensors, v(n):ppp, Month 2024. (accepted). [ bib | .pdf ]

Alireza Emami, Rui Araújo, Sérgio Cruz, and A. Pedro Aguiar. Engineering approach to construct robust filter for mismatched nonlinear dynamic systems. International Journal of Robust and Nonlinear Control, 34(18):12142--12166, December 2024. [ bib | DOI ]

Gonçalo Gouveia, Jorge Alves, Pedro Sousa, Rui Araújo, and Jérôme Mendes. A modular industrial hardware control system for smart industries. Processes, 12(6):1165, June 2024. [ bib | DOI | .pdf ]

Lucas Macedo da Silva, Symone G. S. Alcalá, Talles Marcelo G. de A. Barbosa, and Rui Araújo. Object and defect detection in additive manufacturing using deep learning algorithms. Production Engineering - Research and Development, 18(6):889--902, December 2024. [Lucas Macedo da Silva, Symone G. S. Alcalá, Talles Marcelo G. de A. Barbosa, and Rui Araújo, “The Objects Images Data Sets”, “The API”, and “The Mobile Application”, 2024; The dataset, API, and mobile application that support the findings of this study (they are also available here: the dataset, the API, and the mobile application).]. [ bib | DOI ]

Alireza Emami, Rui Araújo, Sérgio Cruz, Hazem Hadla, and A. Pedro Aguiar. A systematic approach to modeling synchronous generator using markov parameters and takagi-sugeno fuzzy systems. Expert Systems with Applications, 235:121122, January 2024. [ bib | DOI ]

Rui Araújo, António Pedro Aguiar, Nuno Lau, Rodrigo Ventura, and João Fabro, editors. Soft Computing. MDPI, Basel, Switzerland, 2024. Book ISBN: ISBN 978-3-7258-1891-4 (Hbk), ISBN 978-3-7258-1892-1 (PDF), Topic Reprint. [ bib | DOI | .pdf ]

Saeid Rastegar, Rui Araújo, Milad Malekzadeh, Álvaro Gomes, and Humberto Jorge. A new nialm system design based on neural network architecture and adaptive springy particle swarm optimization algorithm. Energy Efficiency, 16(6):52, June 2023. [ bib | DOI ]

Mafalda Amaro, Jérôme Mendes, Tiago Matias, and Rui Araújo. Adaptive fuzzy generalized predictive control of ph in tubular photobioreactors on microalgae plant. In Proc. of the 2nd IEEE Industrial Electronics Society Annual Online Conference (IESONCON 2023), pages 1--6, Online Conference, December 8-10 2023. IEEE. [ bib | DOI ]

Lucas Macedo Da Silva, Symone G. Soares Alcalá, Talles Marcelo G. de A. Barbosa, and Rui Araújo. Deep learning algorithms for detection of defective objects produced by additive manufacturing. In Proc. of the XXX [Symposium on Production Engineering -] Digital Transformation and Operations Management: Challenges and Tendencies (SIMPEP 2023), pages 1--17, Bauru, São Paulo, Brasil, November 7-9 2023. SIMPEP. (received an Honorable Mention for being considered the best article in the Product Engineering Thematic Area at the conference) (in Portuguese). [ bib ]

Francisco Souza, Cristiano Premebida, and Rui Araújo. High-order conditional mutual information maximization for dealing with high-order dependencies in feature selection. Pattern Recognition, 131:108895, November 2022. [ bib | DOI | .pdf ]

Ricardo Maia, Jérôme Mendes, and Rui Araújo. Electric vehicle physical parameters identification by evolutionary algorithms. In Proc. of The 48th Annual Conference of the IEEE Industrial Electronics Society (IECON 2022), pages 1--6, Brussels, Belgium, October 17-20 2022. IEEE. [ bib | DOI ]

Rodrigo Salles, Jérôme Mendes, Rui Araújo, Carlos Melo, and Pedro Moura. Prediction of key variables in wastewater treatment plants using machine learning models. In Proc. 2022 IEEE International Joint Conference on Neural Networks (IJCNN 2022), at the 2022 World Congress on Coomputational Intelligence (WCCI 2022), pages 1--9, Padova, Italy, July 18-23 2022. IEEE. [Rodrigo Salles, Jérôme Mendes, Rui Araújo, Carlos Melo, and Pedro Moura, “The ML-WWTP Toolbox”, 2022; source code]. [ bib | DOI ]

Francisco Souza, Jérôme Mendes, and Rui Araújo. A regularized mixture of linear experts for quality prediction in multimode and multiphase industrial processes. Applied Sciences, 11(5):2040, February 2021. [ bib | DOI | .pdf ]

Jorge S. S. Júnior, Jérôme Mendes, Rui Araújo, João Ruivo Paulo, and Cristiano Premebida. Novelty detection for iterative learning of mimo fuzzy systems. In Proc. IEEE 19th International Conference on Industrial Informatics (INDIN 2021), pages 1--7, Palma de Mallorca, Spain, July 21-23 2021. IEEE. (Received the Best Paper Award (an ex aequo award) of the conference). [ bib | DOI ]

Jérôme Mendes, Ricardo Maia, Rui Araújo, and Francisco A. A. Souza. Self-evolving fuzzy controller composed of univariate fuzzy control rules. Applied Sciences, 10(17):5836, August 2020. [Jérôme Mendes, Ricardo Maia, Rui Araújo, and Francisco A. A. Souza, “The uSelf-FLC Toolbox”, 2020; source code]. [ bib | DOI | .pdf ]

Ricardo Maia, Jérôme Mendes, Rui Araújo, Marco Silva, and Urbano Nunes. Regenerative braking system modeling by fuzzy Q-learning. Engineering Applications of Artificial Intelligence, 93:103712, August 2020. [ bib | DOI ]

Alireza Emami, Rui Araújo, and Alireza Asvadi. Distributed simultaneous estimation of states and unknown inputs. Systems & Control Letters, 138:104660, April 2020. [ bib | DOI ]

Josias Batista, Darielson Souza, Laurinda dos Reis, Antônio Barbosa, and Rui Araújo. Dynamic model and inverse kinematic identification of a 3-DOF manipulator using RLSPSO. Sensors, 20(2):416, January 2020. [ bib | DOI | .pdf ]

Jérôme Mendes, Francisco Souza, Rui Araújo, and Saeid Rastegar. Neo-fuzzy neuron learning using backfitting algorithm. Neural Computing and Applications, 31(8):3609--3618, August 2019. [Jérôme Mendes, Francisco Souza, Rui Araújo, and Saeid Rastegar, “The GAM-ZOTS Toolbox”, 2019; source code]. [ bib | DOI ]

André L. Dias, Afonso C. Turcato, Guilherme S. Sestito, and Rui A. M. Araújo. Fault diagnosis in gearboxes using accelerometer data and machine learning tools. In 4º Congresso de Pós-Graduação do Instituto Federal São Paulo (IFSP) (CONPOG 2019), no 10º Congresso de Inovação Ciência e Tecnologia (CONICT 2019), pages 1--5, IFSP, Campus Sorocaba, Brasil, November 27-28 2019. IFSP. (in Portuguese). [ bib ]

Darielson A. Souza, Josias G. Batista, Laurinda L. N dos Reis, José R. O Júnior, José N. N. Júnior, Antônio B. S. Júnior, and Rui A. M. Araújo. Identification by recursive least squares with rmo applied to a robotic manipulator. In Proc. 2nd IEEE International Conference on Artificial Intelligence for Industries (AI4I 2019), pages 95--96, Laguna Hills, California, USA, September 25-27 2019. IEEE. [ bib | DOI ]

Jérôme Mendes, Francisco A. A. Souza, Ricardo Maia, and Rui Araújo. Iterative learning of multiple univariate zero-order t-s fuzzy systems. In Proc. of The IEEE 45th Annual Conference of the Industrial Electronics Society (IECON 2019), pages 3657--3662, Lisbon, Portugal, October 14-17 2019. IEEE. [Jérôme Mendes, Francisco A. A. Souza, Ricardo Maia, and Rui Araújo, “The iMU-ZOTS Toolbox”, 2019; source code]. [ bib | DOI ]

Sudeep Sharan, Trung Quoc Nguyen, Peter Nauth, and Rui Araújo. Implementation and testing of voice control in a mobile robot for navigation. In Proc. IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM 2019), pages 145--150, Hong Kong, China, July 8-12 2019. IEEE. [ bib | DOI ]

Ricardo A. M. Pereira and Rui Araújo. Description of the software developed by isr in the framework of the tooling4g project - task 5.1, deliverable e2.1. Technical Report TOOLING4G-DEEC-UC-T5.1-E2.1, Department of Electrical and Computer Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, November 2019. (in Portuguese). [ bib ]

Carlos Alberto C. Belchior, Rui Alexandre M. Araújo, Francisco Alexandre A. Souza, and Jorge Afonso C. Landeck. Sensor-fault tolerance in a wastewater treatment plant by means of anfis-based soft sensor and control reconfiguration. Neural Computing and Applications, 30(10):3265--3276, November 2018. [ bib | DOI ]

Saeid Rastegar, Rui Araújo, and Jalil Sadati. Robust synergetic control design under input and state constraints. International Journal of Control, 91(3):639--657, February 2018. [ bib | DOI ]

Jérôme Mendes, Ricardo Maia, Rui Araújo, and Gonçalo Gouveia. Intelligent controller for industrial processes applied to a distributed two-tank system. In Proc. 1st IEEE International Conference on Artificial Intelligence for Industries (AI4I 2018), pages 39--43, Laguna Hills, California, USA, September 26-28 2018. IEEE. [ bib | DOI ]

Jérôme Mendes, Ricardo Maia, Rui Araújo, and Gonçalo Gouveia. Evolving fuzzy controller, and application to a distributed two-tank process. In Proc. 2018 IEEE International Conference on Electrical Engineering and Informatics (ICELTICS 2018), pages 55--60, Banda Aceh, Indonesia, September 19-20 2018. IEEE. [ bib | DOI ]

Ricardo Pereira, Rui Araújo, Jérôme Mendes, Ricardo Maia, and Gonçalo Gouveia. Sun-synchronous satellite simulation on khronosim, the new system testing architecture. In Proc. 2018 IEEE International Conference on Electrical Engineering and Informatics (ICELTICS 2018), pages 61--66, Banda Aceh, Indonesia, September 19-20 2018. IEEE. (Received the Best Paper Award of the conference). [ bib | DOI ]

Alcidney Chaves, Ricardo Maia, Carlos Belchior, Rui Araújo, and Gonçalo Gouveia. Khronosim: A platform for complex systems simulation and testing. In Proc. 23th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2018), pages 131--138, Torino, Italy, September 4-7 2018. IEEE. [ bib | DOI ]

Carlos Belchior, Rui Araújo, Jérôme Mendes, Alcidney Chaves, and Ricardo Maia. H-infinity adaptive fuzzy control approach applied to antilock-braking systems over a CAN network. In Proc. 23th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2018), pages 910--917, Torino, Italy, September 4-7 2018. IEEE. [ bib | DOI ]

Francisco Souza and Rui Araújo. Mixture of elastic net experts and its application to a polymerization batch process. In Proc. IEEE 16th International Conference on Industrial Informatics (INDIN 2018), pages 939--944, Porto, Portugal, July 18-20 2018. IEEE. [ bib | DOI ]

Jérôme Mendes, António Craveiro, and Rui Araújo. Iterative design of a mamdani fuzzy controller. In Proc. of The 13th APCA/IEEE International Conference on Automatic Control and Soft Computing (CONTROLO 2018), pages 85--90, Ponta Delgada, Azores, Portugal, June 4-6 2018. IEEE. [ bib | DOI ]

Jérôme Mendes, Luís Osório, and Rui Araújo. Self-tuning pid controllers in pursuit of plug and play capacity. Control Engineering Practice, 69:73--84, December 2017. [Jérôme Mendes, Luís Osório, Rui Araújo, “The Self-Tuning PID Controllers Toolbox”, 2017; software source code]. [ bib | DOI ]

Saeid Rastegar, Rui Araújo, and Jérôme Mendes. Online identification of takagi-sugeno fuzzy models based on self-adaptive hierarchical particle swarm optimization algorithm. Applied Mathematical Modelling, 45:606--620, May 2017. [ bib | DOI ]

Saeid Rastegar, Rui Araújo, Jalil Sadati, and Jérôme Mendes. A novel robust control scheme for ltv systems using output integral discrete-time synergetic control theory. European Journal of Control, 34:39--48, March 2017. [ bib | DOI ]

Abdelhamid Iratni, Rui Araújo, Saeid Rastegar, and Mohammed Mostefai. Sensorless nonlinear control of fed-batch escherichia coli cultivation bioprocess using the state-dependent approach. In Paulo Garrido, Filomena Soares, and António Paulo Moreira, editors, CONTROLO 2016 - Proceedings of the 12th Portuguese Conference on Automatic Control, volume 402 of Lecture Notes in Electrical Engineering, pages 299--310. Springer, Cham, Switzerland, 2017. [CONTROLO 2016, Guimarães, Portugal, September 14-16, 2016]. [ bib | DOI ]

Saeid Rastegar, Rui Araújo, Alireza Emami, and Abdelhamid Iratni. A new robust control scheme for ltv systems using output integral discrete synergetic control theory. In Paulo Garrido, Filomena Soares, and António Paulo Moreira, editors, CONTROLO 2016 - Proceedings of the 12th Portuguese Conference on Automatic Control, volume 402 of Lecture Notes in Electrical Engineering, pages 117--127. Springer, Cham, Switzerland, 2017. [CONTROLO 2016, Guimarães, Portugal, September 14-16, 2016]. [ bib | DOI ]

Vasco Ferreira, Francisco A. A. Souza, and Rui Araújo. Semi-supervised soft sensor and feature ranking based on co-regularised least squares regression applied to a polymerization batch process. In Proc. IEEE 15th International Conference on Industrial Informatics (INDIN 2017), pages 257--262, Emden, Germany, July 24-26 2017. IEEE. [ bib | DOI ]

Jérôme Mendes, Francisco Souza, and Rui Araújo. Online evolving fuzzy control design: An application to a CSTR plant. In Proc. IEEE 15th International Conference on Industrial Informatics (INDIN 2017), pages 218--225, Emden, Germany, July 24-26 2017. IEEE. [Jérôme Mendes, Francisco Souza, and Rui Araújo, “The SEDFLC Toolbox”, 2017; source code]. [ bib | DOI ]

Carlos Fernandes, Francisco Souza, and Rui Araújo. Hybrid feature selection algorithm for gene selection and gene importance evaluation in microarray data - abstract. In Proc. of the 5th IEEE Portuguese BioEngineering Meeting (ENBENG 2017), page 35, Coimbra, Portugal, February 16-18 2017. [ bib ]

Rui Araújo. Applied machine learning and process control in industry 4.0: Perspectives, December 20, 2017. Workshop Data Science Challenges in Industry 4.0, Department of Chemical Engineering, University of Coimbra, Portugal, December 20, 2017. [ bib ]

Saeid Rastegar, Rui Araújo, and Jérôme Mendes. A new approach for online t-s fuzzy identification and model predictive control of nonlinear systems. Journal of Vibration and Control, 22(7):1820--1837, April 2016. [ bib | DOI ]

Francisco A. A. Souza, Rui Araújo, and Jérôme Mendes. Review of soft sensors methods for regression applications. Chemometrics and Intelligent Laboratory Systems, 152:69--79, March 2016. [ bib | DOI ]

Symone G. Soares and Rui Araújo. An adaptive ensemble of on-line extreme learning machines with variable forgetting factor for dynamic system prediction. Neurocomputing, 171:693--707, January 2016. [Symone Soares, and Rui Araújo, “The OEOA Toolbox”; source code]. [ bib | DOI ]

André R. de Miranda, Talles M. G. de A. Barbosa, Rui Araújo, and Symone G. S. Alcalá. An on-line extreme learning machine with adaptive architecture for soft sensor design. In Proc. of The IEEE Sensors 2016 (SENSORS 2016), pages 1--3, Orlando, FL, USA, October 30 - November 2 2016. IEEE. [ bib | DOI ]

Leonaldo Silva Gomes, Francisco Alexandre A. Souza, Ricardo Silva Thé Pontes, Tobias R. Fernandes Neto, and Rui Alexandre M. Araújo. Coagulant dosage determination in a water treatment plant using dynamic neural network models. International Journal of Computational Intelligence and Applications, 14(03):1550013--1--1550013--18, September 2015. [ bib | DOI ]

Ricardo Maia, Marco Silva, Rui Araújo, and Urbano Nunes. Electrical vehicle modeling: A fuzzy logic model for regenerative braking. Expert Systems with Applications, 42(22):8504--8519, December 2015. [Ricardo Maia, Marco Silva, Rui Araújo, and Urbano Nunes, “The FLmRB Toolbox and Data Sets”, 2015; software, and Nissan Leaf electric vehicle regenerative braking data sets]. [ bib | DOI ]

Tiago Matias, Francisco Souza, Rui Araújo, Nuno Gonçalves, and João P. Barreto. On-line sequential extreme learning machine based on recursive partial least squares. Journal of Process Control, 27:15--21, March 2015. [ bib | DOI ]

Symone G. Soares and Rui Araújo. A dynamic and on-line ensemble regression for changing environments. Expert Systems with Applications, 42(6):2935--2948, April 2015. [Symone Soares, and Rui Araújo, “The DOER Toolbox”; source code]. [ bib | DOI ]

Symone Gomes Soares and Rui Araújo. An on-line weighted ensemble of regressor models to handle concept drifts. Engineering Applications of Artificial Intelligence, 37:392--406, January 2015. [Symone Soares, and Rui Araújo, “The OWE Toolbox”, 2015; Symone Soares, and Rui Araújo, “The Toolbox of Regression Datasets for Concept Drifts”, 2015; source codes and data sets]. [ bib | DOI ]

Jérôme Mendes, Rui Araújo, Tiago Matias, Ricardo Seco, and Carlos Belchior. Automatic extraction of the fuzzy control system by a hierarchical genetic algorithm. Engineering Applications of Artificial Intelligence, 29:70--78, March 2014. [ bib | DOI ]

Francisco A. A. Souza and Rui Araújo. Mixture of partial least squares experts and application in prediction settings with multiple operating modes. Chemometrics and Intelligent Laboratory Systems, 130:192--202, January 2014. [Francisco A. A. Souza, and Rui Araújo, “The Mix-PLS Toolbox”, 2013; source code; also available here]. [ bib | DOI ]

Symone G. Soares and Rui Araújo. Semantic place labeling using a probabilistic decision list of adaboost classifiers. International Journal of Computer Information Systems and Industrial Management Applications (IJCISIMA), 6:548--559, 2014. [ bib | .pdf ]

Oswaldo Ludwig, Urbano Nunes, and Rui Araújo. Eigenvalue decay: a new method for neural network regularization. Neurocomputing, 124:33--42, January 2014. [Matlab code for Support Vector Neural Network is available here.]. [ bib | DOI ]

Tiago Matias, Francisco Souza, Rui Araújo, and Carlos Henggeler Antunes. Learning of a single-hidden layer feedforward neural network using an optimized extreme learning machine. Neurocomputing, 129:428--436, April 2014. [Tiago Matias, Francisco Souza, and Rui Araújo, “The O-ELM Toolbox”, 2013; source code]. [ bib | DOI ]

Francisco Souza and Rui Araújo. Online mixture of univariate linear regression models for adaptive soft sensors. IEEE Transactions on Industrial Informatics, 10(2):937--945, May 2014. [Francisco Souza, and Rui Araújo, “The MULRM Toolbox”, 2013; source code]. [ bib | DOI ]

Saeid Rastegar, Rui Araújo, Jérôme Mendes, Tiago Matias, and Alireza Emami. Self-adaptive takagi-sugeno model identification methodology for industrial control processes. In Proc. of The 40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), pages 281--287, Dallas, TX, USA, October 29 - November 1 2014. IEEE. [ bib | DOI ]

Jérôme Mendes, Rui Araújo, Tiago Matias, Ricardo Seco, and Carlos Belchior. Evolutionary learning of a fuzzy controller for industrial processes. In Proc. of The 40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), pages 139--145, Dallas, TX, USA, October 29 - November 1 2014. IEEE. [ bib | DOI ]

Tiago Matias, Francisco Souza, Rui Araújo, Saeid Rastegar, and Jérôme Mendes. Adaptive identification and predictive control using an improved on-line sequential extreme learning machine. In Proc. of The 40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), pages 58--64, Dallas, TX, USA, October 29 - November 1 2014. IEEE. [ bib | DOI ]

Luís Osório, Alireza Emami, Jérôme Mendes, Rui Araújo, Tiago Matias, and Pedro Sousa. VRFT and MPC control methodologies - deliverables: Tasks 2.6 and 2.7. Technical Report SCIAD 06, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, June 2014. [ bib ]

Jérôme Mendes, Rui Araújo, and Francisco Souza. Adaptive fuzzy identification and predictive control for industrial processes. Expert Systems with Applications, 40(17):6964--6975, December 2013. [ bib | DOI ]

Francisco A. A. Souza, Rui Araújo, Tiago Matias, and Jérôme Mendes. A multilayer-perceptron based method for variable selection in soft sensor design. Journal of Process Control, 23(10):1371--1378, November 2013. [WTP data set]. [ bib | DOI ]

Symone Soares, Carlos Henggeler Antunes, and Rui Araújo. Comparison of a genetic algorithm and simulated annealing for automatic neural network ensemble development. Neurocomputing, 121:498--511, December 2013. [Boston Housing data set] [Friedman Artificial Domain data set] [both datasets]. [ bib | DOI ]

Saeid Rastegar and Rui Araújo. A robust algorithm for a class of optimal control problems subject to regional stability constraints and disturbances. Measurement, 46(6):1773--1780, July 2013. [ bib | DOI ]

Morad Danishvar, Ali Mousavi, Pedro Sousa, and Rui Araújo. Event-clustering for real-time data modeling. In Proc. 9th Annual IEEE International Conference on Automation Science and Engineering (CASE 2013), pages 362--367, Madison, WI, USA, August 17-21 2013. IEEE. [ bib | DOI ]

Tiago Matias, Rui Araújo, Carlos Henggeler Antunes, and Dulce Gabriel. Genetically optimized extreme learning machine. In Proc. 18th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2013), pages 1--8, Cagliari, Italy, September 10-13 2013. IEEE. [ bib | DOI ]

Luís Osório, Jérôme Mendes, Rui Araújo, and Tiago Matias. A comparison of adaptive pid methodologies controlling a dc motor with a varying load. In Proc. 18th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2013), pages 1--8, Cagliari, Italy, September 10-13 2013. IEEE. [ bib | DOI ]

Tiago Matias, Dulce Gabriel, Francisco Souza, Rui Araújo, and J. Costa Pereira. Fault detection and replacement of a temperature sensor in a cement rotary kiln. In Proc. 18th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2013), pages 1--8, Cagliari, Italy, September 10-13 2013. IEEE. [ bib | DOI ]

Dulce Gabriel, Tiago Matias, J. Costa Pereira, and Rui Araújo. Predicting gas emissions in a cement kiln plant using hard and soft modeling strategies. In Proc. 18th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2013), pages 1--8, Cagliari, Italy, September 10-13 2013. IEEE. [ bib | DOI ]

Tiago Matias, Jérôme Mendes, Rui Araújo, and Pedro Sousa. Algorithm for obtain linguistic values (fuzzy sets) of fuzzy linguistic variables by learning - deliverable: Task 2.5. Technical Report SCIAD 05, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, September 2013. [ bib ]

Luís Osório, Saeid Rastegar, Jérôme Mendes, Rui Araújo, Tiago Matias, and Pedro Sousa. Adaptive techniques on linear controllers, and methods for identification of process models for control applications - deliverable: Tasks 2.3 and 2.4. Technical Report SCIAD 04, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, June 2013. [ bib ]

Jérôme Mendes, Francisco Souza, Rui Araújo, and Nuno Gonçalves. Genetic fuzzy system for data-driven soft sensors design. Applied Soft Computing, 12(10):3237--3245, October 2012. [Box-Jenkins gas furnace process data] [Box-Jenkins gas furnace process data, local copy]. [ bib | DOI ]

Carlos Alberto Coelho Belchior, Rui Alexandre Matos Araújo, and Jorge Afonso Cardoso Landeck. Dissolved oxygen control of the activated sludge wastewater treatment process using stable adaptive fuzzy control. Computers & Chemical Engineering, 37:152--162, 10 February 2012. [ bib | DOI ]

Francisco Souza and Rui Araújo. An online variable selection method using recursive least squares. In Proc. 17th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2012), pages 1--8, Kraków, Poland, September 17-21 2012. IEEE. [ bib | DOI ]

Jérôme Mendes, Samuel Pinto, Rui Araújo, and Francisco Souza. Evolutionary fuzzy models for nonlinear identification. In Proc. 17th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2012), pages 1--8, Kraków, Poland, September 17-21 2012. IEEE. [ bib | DOI ]

Jérôme Mendes and Rui Araújo. Fuzzy model predictive control for nonlinear processes. In Proc. 17th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2012), pages 1--8, Kraków, Poland, September 17-21 2012. IEEE. [ bib | DOI ]

Symone G. Soares, Carlos H. Antunes, and Rui Araújo. A genetic algorithm for designing neural network ensembles. In Proc. Genetic and Evolutionary Computation Conference (GECCO 2012), a recombination of the 21st International Conference on Genetic Algorithms (ICGA), and the 17th Annual Genetic Programming Conference (GP), pages 681--688, Philadelphia, USA, July 07-11 2012. ACM. [Boston Housing data set] [Friedman Artificial Domain data set] [both datasets]. [ bib | DOI ]

Tiago Matias, Luís Osório, Jérôme Mendes, Rui Araújo, and Pedro Sousa. Obtaining fuzzy rules by genetic programming and linear control techniques - deliverable: Tasks 2.1 and 2.2. Technical Report SCIAD 03, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, March 2012. [ bib ]

Luís Osório, Jérôme Mendes, Rui Araújo, Tiago Matias, and Pedro Sousa. Adaptive pid - real test report - deliverable: Task 2.3. Technical Report SCIAD 02, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, May 2012. [ bib ]

Luís Osório, Tiago Matias, Saeid Rastegar, Jérôme Mendes, Rui Araújo, and Pedro Sousa. Control systems and architectures in industry - deliverable: Task 1.2. Technical Report SCIAD 01, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, March 2012. [ bib ]

S. G. Soares, T. B. Takáo, A. F. da Rocha, R. A. de M. Araújo, and T. M. G. de A. Barbosa. Building distributed soft sensors. International Journal of Computer Information Systems and Industrial Management Applications (IJCISIMA), 3:202--209, 2011. [ bib | .pdf ]

Jérôme Mendes, Rui Araújo, Pedro Sousa, Filipe Apóstolo, and Luís Alves. An architecture for adaptive fuzzy control in industrial environments. Computers in Industry, 62(3):364--373, April 2011. [ bib | DOI ]

O. Ludwig, C. Premebida, U. Nunes, and R. Araújo. Evaluation of boosting-svm and srm-svm cascade classifiers in laser and vision-based pedestrian detection. In Proc. 14th International IEEE Conference on Intelligent Transportation Systems (ITSC 2011), pages 1--8, Washington DC, USA, October 5-7 2011. IEEE. [ bib | DOI ]

Symone Soares, Rui Araújo, Pedro Sousa, and Francisco Souza. Design and application of soft sensor using ensemble methods. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--8, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Francisco Souza, Tiago Matias, and Rui Araújo. Co-evolutionary genetic multilayer perceptron for feature selection and model design. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--7, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Francisco Souza and Rui Araújo. Variable and time-lag selection using empirical data. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--8, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Jérôme Mendes, Nuno Sousa, and Rui Araújo. Adaptive predictive control with recurrent fuzzy neural network for industrial processes. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--8, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Jérôme Mendes, Ricardo Seco, and Rui Araújo. Automatic extraction of the fuzzy control system for industrial processes. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--8, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Jérôme Mendes and Rui Araújo. Stable indirect adaptive predictive fuzzy control for industrial processes. In Proc. 16th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2011), pages 1--8, Toulouse, France, September 5-9 2011. IEEE. [ bib | DOI ]

Ricardo Maia, Marco Silva, Rui Araújo, and Urbano Nunes. Electric vehicle simulator for energy consumption studies in electrical mobility systems. In Proc. IEEE Forum on Integrated and Sustainable Transportation System (FISTS 2011), pages 228--233, Vienna, Austria, June 29 - July 1 2011. IEEE. [ bib | DOI ]

Aníbal T. de Almeida, Carlos Patrão, Paula Fonseca, Rui Araújo, and Urbano Nunes, editors. SELINA - Standby and Off-Mode Energy Losses In New Appliances Measured in Shops. Institute of Systems and Robotics - University of Coimbra (ISR-UC), November 2010. Book ISBN: 978-972-8822-21-7. [ bib ]

Symone Gomes Soares, Adson Ferreira da Rocha, Talles Marcelo G. de A. Barbosa, and Rui Alexandre de Matos Araújo. Embedding a neural network into wsn furniture. In Proc. 10th IEEE International Conference on Hybrid Systems (HIS 2010), pages 219--222, Atlanta, USA, August 23-25 2010. IEEE. [ bib | DOI ]

Francisco Souza, Rui Araújo, Symone Soares, and Jérôme Mendes. Variable selection based on mutual information for soft sensors applications. In Proc. 9th Portuguese Conference on Automatic Control (CONTROLO 2010), pages 1--6, Coimbra, Portugal, September 8-10 2010. [ bib ]

Jérôme Mendes, Rui Araújo, Pedro Sousa, Filipe Apóstolo, and Luís Alves. Fuzzy control architecture for industrial systems. In Proc. 9th Portuguese Conference on Automatic Control (CONTROLO 2010), pages 1--6, Coimbra, Portugal, September 8-10 2010. [ bib ]

Jérôme Mendes and Rui Araújo. Adaptive fuzzy model-based predictive control: a lyapunov approach. In Proc. 9th Portuguese Conference on Automatic Control (CONTROLO 2010), pages 1--6, Coimbra, Portugal, September 8-10 2010. [ bib ]

Carlos Alberto Belchior, Rui Araújo, and Jorge Landeck. Adaptive fuzzy control of the dissolved oxygen concentration in an activated sludge process. In Proc. 15th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2010), pages 1--7, Bilbao, Spain, September 13-16 2010. IEEE. [ bib | DOI ]

Francisco Souza, Pedro Santos, and Rui Araújo. Variable and delay selection using neural networks and mutual information for data-driven soft sensors. In Proc. 15th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2010), pages 1--8, Bilbao, Spain, September 13-16 2010. IEEE. [ bib | DOI ]

Jérôme Mendes, Rui Araújo, and Francisco Souza. Adaptive fuzzy generalized predictive control based on discrete-time t-s fuzzy model. In Proc. 15th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2010), pages 1--7, Bilbao, Spain, September 13-16 2010. IEEE. [ bib | DOI ]

Symone Soares and Rui Araújo. Design and application of soft sensor in industrial processes using small datasets, November 22-28 2010. National Science and Technology Week, Faculdade de Ciências e Tecnologia, Universidade de Coimbra. [ bib ]

Jérôme Mendes and Rui Araújo. Adaptive fuzzy generalized predictive control based on discrete-time t-s fuzzy model for industrial processes, November 22-28 2010. National Science and Technology Week, Faculdade de Ciências e Tecnologia, Universidade de Coimbra. [ bib ]

Filipe Apóstolo, Pedro Sousa, and Rui Araújo. Milling control cru 2 - intelligent control instalation. Technical Report (performed in the framework of the SInCACI R&D project de I&D in partnership between FCTUC and Acontrol), Research, Development, and Innovation Division (Acontrol), Coimbra, October 2010. (in Portuguese). [ bib ]

Oswaldo Ludwig Junior, Urbano Nunes, Rui Araújo, Leizer Schnitman, and Herman Augusto Lepikson. Applications of information theory, genetic algorithms, and neural models to predict oil flow. Communications in Nonlinear Science and Numerical Simulation, 14(7):2870--2885, July 2009. [ bib | DOI ]

Rui Cortesão, Brian Zenowich, Rui Araújo, and William Townsend. Robotic comanipulation with active impedance control. In Proc. ASME/AFM 2009 World Conference on Innovative Virtual Reality (WINVR 2009), pages 129--135, Chalon-sur-Saône, France, February 25-26 2009. ASME. [ bib | DOI ]

Luís Alves, Pedro Sousa, and Rui Araújo. Industrial field bus interchange products: Solutions and market. Technical Report SInCACI 03, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, September 2009. [ bib ]

Francisco Souza and Rui Araújo. Soft sensors - overview and state of art. Technical Report SInCACI 02, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, September 2009. [ bib ]

Jérôme Mendes and Rui Araújo. Intelligent systems and applications. Technical Report SInCACI 01, Departamento de Engenharia Electrotécnica e de Computadores, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Coimbra, September 2009. [ bib ]

Rui Araújo, Urbano Nunes, Luciano Oliveira, Pedro Sousa, and Paulo Peixoto. Support vector machines and features for environment perception in mobile robotics. In Lakhmi C. Jain, Mika Sato-Ilic, Maria Virvou, George A. Tsihrintzis, Valentina Emilia Balas, and Canicious Abeynayake, editors, Computational Intelligence Paradigms: Innovative Applications, volume SCI 137 of Studies in Computational Intelligence, pages 219--250. Springer-Verlag, Berlin Heidelberg, Germany, 2008. [ bib | DOI ]

Oswaldo Ludwig Junior, Urbano Nunes, Rui Araújo, Leizer Schnitman, and Herman Augusto Lepikson. Applications of entropy and neural models to predict oil flow. In Proc. 2nd Conference on Nonlinear Science and Complexity (NSC 2008), pages 1--13, Porto, Portugal, July 28-31 2008. [ bib ]

Oswaldo Ludwig Junior, Urbano Nunes, and Rui Araújo. Comparison study of redundant sensor fusion in autonomous vehicle navigation. In Proc. 8th Portuguese Conference on Automatic Control (CONTROLO 2008), pages 719--725, Vila Real, Portugal, July 21-23 2008. [ bib ]

Jorge Almeida and Rui Araújo. Tracking multiple moving objects in a dynamic environment for autonomous navigation. In Proc. 10th IEEE Int. Workshop on Advanced Motion Control (AMC 2008), pages 21--26, Trento, Italy, March 26-28 2008. IEEE. [ bib | DOI ]

Pedro Sousa, Rui Araújo, Urbano Nunes, Luís Alves, and Ana C. Lopes. Real-time architecture for mobile assistant robots. In Proc. IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2007), pages 965--972, Patras, Greece, September 25-28 2007. IEEE. [ bib | DOI ]

Pedro Sousa, Rui Araújo, and Urbano Nunes. Real-time labeling of places using support vector machines. In Proc. IEEE International Symposium on Industrial Electronics (ISIE 2007), pages 2022--2027, Vigo, Spain, June 4-7 2007. IEEE. [ bib | DOI ]

Rui Araújo. Prune-able fuzzy art neural architecture for robot map learning and navigation in dynamic environments. IEEE Transactions On Neural Networks, 17(5):1235--1249, September 2006. (Experiment movies are available here). [ bib | DOI ]

Jorge Costa, Filipe Dias, and Rui Araújo. Simultaneous localization and map building by integrating a cache of features. In Proc. 11th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2006), pages 1036--1043, Prague, Czech Republic, September 20-22 2006. IEEE. [ bib | DOI ]

António Almeida, Jorge Almeida, and Rui Araújo. Real-time tracking of multiple moving objects using particle filters and probabilistic data association. AUTOMATIKA: Journal for Control, Measurement, Electronics, Computing and Communications, 46(1-2):39--48, 2005. (Article resulting from the selection for publication of the conference ISIE 2005 article. Selection performed by the Program Committee). [ bib ]

Jorge Almeida, António Almeida, and Rui Araújo. Real-time tracking using particle filters and sample-based joint probabilistic data association filters. Robótica: Automação, Controlo, Instrumentação, 60(3rd Quarter):10--16, 2005. (Article resulting from the selection of the Robótica conference article. Selection performed by the Scientific Committee.). [ bib ]

Jorge Almeida, António Almeida, and Rui Araújo. Real-time tracking using particle filters and sample-based joint probabilistic data association filters. In Proc. of the 5th National Robotics Festival (ROBÓTICA 2005), pages 1--8, Coimbra, Portugal, April 29 2005. [ bib ]

Jorge Almeida, António Almeida, and Rui Araújo. Tracking multiple moving objects for mobile robotics navigation. In Proc. 10th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA 2005), pages 203--210, Catania, Italy, September 19-22 2005. IEEE. (Received one of the two Best Paper Awards of the conference: the Fumio Harashima Best Paper Award em Emerging Technology). [ bib | DOI ]

António Surrécio, Urbano Nunes, and Rui Araújo. Fusion of odometry with magnetic sensors using kalman filters and augmented system models for mobile robot navigation. In Proc. IEEE International Symposium on Industrial Electronics (ISIE 2005), pages 1551--1556, Dubrovnik, Croatia, June 20-23 2005. IEEE. [ bib | DOI ]

António Almeida, Jorge Almeida, and Rui Araújo. Real-time tracking of moving objects using particle filters. In Proc. IEEE International Symposium on Industrial Electronics (ISIE 2005), pages 1327--1332, Dubrovnik, Croatia, June 20-23 2005. IEEE. [ bib | DOI ]

Urbano Nunes, José Alberto Fonseca, Luís Almeida, Rui Araújo, and Rodrigo Maia. Using distributed systems in real-time control of autonomous vehicles. ROBOTICA, 21(3):271--281, May-June 2003. [ bib | DOI ]

Sérgio Santos, José Eduardo Faria, Fernando Soares, Rui Araújo, and Urbano Nunes. Tracking of multi-obstacles with laser range data for autonomous vehicles. In Proc. of the 3rd National Robotics Festival (ROBÓTICA 2003), pages 59--65, Lisboa, Portugal, May 9 2003. [ bib ]

Rui Araújo, Gonçalo Gouveia, and Nuno Santos. Learning self-organizing maps for navigation in dynamic worlds. In Proc. IEEE International Conference on Robotics and Automation (ICRA 2003), pages 1312--1317, Taipei, Taiwan, September 14-19 2003. IEEE. [ bib | DOI ]

Rui Araújo and Urbano Nunes. Adaptive-resolution map building approach for robot navigation in dynamic environments. Machine Intelligence & Robotic Control (MIROC), 4(2):61--70, June 2002. [ bib ]

Rui Araújo, Urbano Nunes, J. Luís Cruz, and Aníbal T. de Almeida. Self teaching and exploratory task-learning methods in unknown environments and applications in robotic skills. In Cornelius T. Leondes, editor, Expert Systems, volume 6 of International Series in Engineering, Technology and Applied Science, pages 1897--1923. Academic Press, San Diego, CA, USA, 2002. [ bib | DOI ]

Rui Araújo, Gonçalo Gouveia, and Nuno Santos. Mobile robot localization using a fuzzy art world model. In Proc. IEEE 28th International Conference on Industrial Electronics, Control and Instrumentation (IECON 2002), pages 2409--2414, Sevilla, Spain, November 5-8 2002. IEEE. [ bib | DOI ]

Rui Araújo, Gonçalo Gouveia, and Aníbal T. de Almeida. Learning variable-resolution maps for navigation in dynamic worlds. In Proc. IEEE 28th International Conference on Industrial Electronics, Control and Instrumentation (IECON 2002), pages 2403--2408, Sevilla, Spain, November 5-8 2002. IEEE. [ bib | DOI ]

Gabriel Pires, Urbano Nunes, Rui Araújo, and João Coimbra. Development of the robchair assistive navigation system. Robótica: Automação, Controlo, Instrumentação, 43(2nd Quarter):25--43, 2001. [ bib ]

Rui Araújo, David Lourenço, and Aníbal T. de Almeida. Learning multiresolution maps in dynamic worlds. In Proc. IEEE International Conference on Advanced Robotics (ICAR2001), pages 425--430, Budapest, Hungary, August 22-25 2001. IEEE. [ bib ]

Rui Araújo, David Lourenço, and Gil Ferreira. Integrating laser and infrared sensors for learning dynamic self-organizing world maps. In Proc. IEEE International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI2001), pages 293--298, Baden-Baden, Germany, August 20-22 2001. IEEE. [ bib | DOI ]

Urbano Nunes, Rui Araújo, and Lino Marques. Towards intelligent machines: Theories, technologies and experiments. Journal of Systems Analysis, Modelling and Simulation, 38(2):157--173, August 2000. [ bib ]

Rui Araújo and Aníbal T. de Almeida. Learning both a world model and navigation paths in an unknown environment. International Journal of Intelligent Automation and Soft Computing, 6(2):159--170, 2000. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Learning sensor-based navigation of a real mobile robot in unknown worlds. IEEE Transactions On Systems, Man, and Cybernetics--Part B: Cybernetics, 29-B(2):164--178, April 1999. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Reducing motion inaccuracies on a mobile robot. Journal of Intelligent and Robotic Systems, 21(3):197--219, March 1998. [ bib | DOI ]

Rui Araújo, Urbano Nunes, and Lino Marques. Towards intelligent machines: Theory, technology, and experiments. In Spyros G. Tzafestas, editor, Trends in System Analysis and Control: Methods & Applications (`[Proc. of] IMACS/IFAC/IEEE Third European Robotics, Intelligent Systems & Control Conference (EURISCON'98)'), volume SCI 137, pages 3--14, and Abstracts Book, p. 27. IMACS/IFAC/IEEE, Athens, Greece, 1998. [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Connectionist reinforcement learning of robot control skills. In Daniel Dubois, editor, Computing Antecipatory Systems: CASYS -- First International Conference, volume 437 of AIP Conference Proceedings, pages 364--373 (and Abstract Book, pp. III.10--III.12; Liege, Belgium, August 11--15, 1997). AIP - The American Institute of Physics, Woodbury, New York, 1998. [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Exploration-based path-learning by a mobile robot on an unknown world. In Alicia Casals and Aníbal T. de Almeida, editors, Experimental Robotics V: The Fifth International Symposium, Barcelona, Catalonia, June 15-18, 1997, volume 232 of Lecture Notes in Control and Information Sciences, pages 647--658. Springer-Verlag, London, England, 1998. (Also appears at the Prep. Fifth International Symposium On Experimental Robotics (ISER'97), pp. 551-562, Barcelona, Spain, June 15-18, 1997). [ bib | DOI ]

Gabriel Pires, Rui Araújo, and Urbano Nunes. Fuzzy-based navigation system of a powered wheelchair. In Proc. Fifteenth National Conference On Artificial Intelligence (AAAI-98), Integrating Artificial Intelligence and Assistive Technology Workshop, pages 55--60, Madison, Wiscosin, USA, July 26-30 1998. [ bib ]

Rui Araújo and Aníbal T. de Almeida. Building geometric certainty maps with application to the navigation of a mobile robot. In Proc. IEEE 24th International Conference Industrial Electronics, Control and Instrumentation (IECON'98), pages 1186--1191, Aachen, Germany, August 31 - September 4 1998. IEEE. [ bib | DOI ]

Gabriel Pires, Rui Araújo, Urbano Nunes, and Aníbal T. de Almeida. Robchair: A powered wheelchair using a behaviour-based navigation. In Proc. IEEE International Workshop on Advanced Motion Control (AMC'98), pages 536--541, Coimbra, Portugal, June 29-July 1 1998. IEEE. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Integrating a geometric-primitive map into a multiresolution motion planning approach. In Proc. IEEE International Workshop on Advanced Motion Control (AMC'98), pages 629--634, Coimbra, Portugal, June 29-July 1 1998. IEEE. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Fuzzy art based approach for real-time map building. In Proc. IEEE International Workshop on Advanced Motion Control (AMC'98), pages 623--628, Coimbra, Portugal, June 29-July 1 1998. IEEE. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Map building using fuzzy art, and learning to navigate a mobile robot on an unknown world. In Proc. IEEE International Conference on Robotics and Automation (ICRA'98), pages 293--298, Leuven, Belgium, May 16-21 1998. IEEE. [ bib | DOI ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Self-learning of robot control skills. In Achim Sydow, editor, 15th IMACS World Congress 1997 on Scientific Computation, Modelling and Applied Mathematics (IMACS-WC'97), volume 5 of Systems Engineering, pages pp. 281--286 (and Abstracts Book, p. 589). W&T - Wissenschaft & Technik Verlag, Berlin, Germany, August 24-29 1997. [ bib ]

R. Cortesão, U. Nunes, R. Araújo, and A. T. de Almeida. Modelling and communicating in teleoperation environments. In Achim Sydow, editor, 15th IMACS World Congress 1997 on Scientific Computation, Modelling and Applied Mathematics (IMACS-WC'97), volume 5 of Systems Engineering, pages 293--298 (Abstracts Book, p. 591). W&T - Wissenschaft & Technik Verlag, Berlin, Germany, August 24-29 1997. [ bib ]

Rui Araújo and A. T. de Almeida. Mobile robot motion-planning with learning. In Achim Sydow, editor, 15th IMACS World Congress 1997 on Scientific Computation, Modelling and Applied Mathematics (IMACS-WC'97), volume 5 of Systems Engineering, pages 331--336 (and Abstracts Book, p. 597). W&T - Wissenschaft & Technik Verlag, Berlin, Germany, August 24-29 1997. [ bib ]

Rui Araújo and A. T. de Almeida. Exploration of an unknown environment by a mobile robot. In Luis M. Camarinha Matos, editor, Re-engineering for Sustainable Industrial Production, pages 141--150. Chapman & Hall, London, England, 1997. (Proc. OE/IFIP/IEEE International Conference on Integrated and Sustainable Industrial Production, Lisbon, Portugal, May 14-16 1997). [ bib | DOI ]

R. Cortesão, R. Araújo, U. Nunes, and A. T. de Almeida. Building a teleoperation environment. IFAC Proceedings Volumes ; Algorithms and Architectures for Real-Time Control 1997: A Proceedings volume from the IFAC Workshop, Vilamoura, Portugal, 9-11 April 1997, 30(3):173--178, 1997. (Also appears at Preprints 4th IFAC Workshop on Algorithms and Architectures for Real-Time Control (AARTC'97), pp. 199-204, Vilamoura, Portugal, April 9-11, 1997). [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Minimising the effects of control-space quantization on mobile robot motion. IFAC Proceedings Volumes ; Algorithms and Architectures for Real-Time Control 1997: A Proceedings volume from the IFAC Workshop, Vilamoura, Portugal, 9-11 April 1997, 30(3):209--214, 1997. (Also appears at Preprints 4th IFAC Workshop on Algorithms and Architectures for Real-Time Control (AARTC'97), pp. 411-416, Vilamoura, Portugal, April 9-11, 1997). [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Mobile robot path learning on an unknown environment. IFAC Proceedings Volumes ; Algorithms and Architectures for Real-Time Control 1997: A Proceedings volume from the IFAC Workshop, Vilamoura, Portugal, 9-11 April 1997, 30(3):185--190, 1997. (Also appears at Preprints 4th IFAC Workshop on Algorithms and Architectures for Real-Time Control (AARTC'97), pp. 211-216, Vilamoura, Portugal, April 9-11, 1997). [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Reducing motion innacuracies due to actuation-system quantisation-errors on a khepera mobile robot. In Proc. IEEE International Conference on Intelligent Engineering Systems (INES'97), pages 339--344, Budapest, Hungary, September 15-17 1997. IEEE. [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Mobile robot path-learning to separate goals on an unknown world. In Proc. IEEE International Conference on Intelligent Engineering Systems (INES'97), pages 265--270, Budapest, Hungary, September 15-17 1997. IEEE. [ bib | DOI ]

Rui Araújo and Aníbal T. de Almeida. Sensor-based learning of environment model and path planning with a nomad 200 mobile robot. In Proc. IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'97), pages 539--544, Grenoble, France, September 8-13 1997. IEEE. [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Reducing position errors arising from control-space quantisation on a mobile robot. In Proc. IEEE International Symposium on Industrial Electronics (ISIE'97), pages 785--790, Guimarães, Portugal, July 7-11 1997. [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Path planning-by-learning with a nomad 200 mobile robot. In Proc. IEEE International Symposium on Industrial Electronics (ISIE'97), pages 779--784, Guimarães, Portugal, July 7-11 1997. [ bib | DOI ]

Rui Araújo and A. T. de Almeida. Decreasing the effects of actuation-system quantisation-errors on a khepera mobile robot. In Proc. 5as Jornadas Hispano-Lusas de Ingeniería Eléctrica (JHLIE'97), pages 1705--1712, Salamanca, Spain, July 3-5 1997. [ bib ]

Rui Araújo and A. T. de Almeida. World exploration and path learning with a khepera mobile robot. In Proc. 5as Jornadas Hispano-Lusas de Ingeniería Eléctrica (JHLIE'97), pages 1713--1720, Salamanca, Spain, July 3-5 1997. [ bib ]

Rui Araújo and A. T. de Almeida. World learning and simultaneous path planning with a mobile robot. In Proc. 9th Portuguese Conference on Pattern Recognition (RecPad'97), pages 51--58, Coimbra, Portugal, March 20-21 1997. [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. 3d surface-tracking with a robot manipulator. Journal of Intelligent and Robotic Systems, 15(4):401--417, April 1996. [ bib | DOI ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. A fuzzy learning robot force controller. In Mohammad Jamshidi, Madjid Fathi, and François Pierrot, editors, Soft Computing with Industrial Applications: Recent Trends in Research and Development, volume 5 of Proceedings of the World Automation Congress, pages 19--24. TSI Press, Albuquerque, NM, USA, 1996. (Conference article Proc. World Automation Conference (WAC'96), International Symposium on Intelligent Automation and Control (ISIAC'96), pp. 19-24, Montepellier, France, 27-30 May, 1996). [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Application of a reinforcement learning fuzzy control system in robotics. In Proc. The 5th UK Mechatronics Forum International Conference (mecatronics'96), with The 3rd International Conference on Mechatronics and Machine Vision in Practice (M2Vip'96), pages 2--39--2--44, Guimarães, Portugal, September 18-20 1996. [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Robot learning of a contour-tracking operation. In Proc. IMACS/IEEE Multiconference on Computacional Engineering in Systems Applications (CESA'96), Symposium on Robotics and Cybernetics, pages 688--693, Lille, France, July 9-12 1996. [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Fuzzy-based reinforcement learning force of a robot control skill. In Proc. IEEE International Symposium on Industrial Electronics (ISIE'96), pages 453--458, Warsaw, Poland, June 17-20 1996. [ bib | DOI ]

Urbano Nunes, Rui Araújo, and A. T. de Almeida. Adaptive control of a robot manipulator: An experimental study. In Proc. 3rd International Symposium on Intelligent Robotic Systems (SIRS'95), pages 221--230, Pisa, Italy, July 10-14 1995. [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Alignment with surfaces using a puma 560 robot. In Proc. 5th Jornadas Nacionais de Projecto, Planeamento e Produção Assistidos por Computador, pages 113--120, Guimarães, Portugal, 30 May - 1 June 1995. (in Portuguese). [ bib ]

Rui Araújo, Urbano Nunes, and A. T. de Almeida. Robot 3d force-based surface-tracking. In Proc. IEEE 20th International Conference on Industrial Electronics, Control and Instrumentation (IECON'94), pages 788--793, Bologna, Italy, September 5-9 1994. IEEE. [ bib | DOI ]

Pedro Faia, Urbano Nunes, Rui Araújo, and A. T. de Almeida. Hierarchical architecture for control of a multisensor cell. In Actas das 4as Jornadas Nacionais de Projecto, Planeamento e Produção Assistidos por Computador, pages 329--336, Ordem dos Engenheiros, Lisboa, Portugal, May 17-19 1993. (in Portuguese). [ bib ]

Urbano Nunes, Rui Araújo, Pedro Faia, and A. T. de Almeida. Fine motion control of a puma 560 robot arm. In Actas das 4as Jornadas Nacionais de Projecto, Planeamento e Produção Assistidos por Computador, pages 321--328, Ordem dos Engenheiros, Lisboa, Portugal, May 17-19 1993. (in Portuguese). [ bib ]

Pedro Faia, Urbano Nunes, Rui Araújo, and A. T. de Almeida. Distributed architecture for control and sensor integration of a robotic cell. In Actas das 3as Jornadas Hispano-Lusas de Ingenieria Electrica, pages 1713--1722, Barcelona, Spain, September 23-25 1993. (in Portuguese). [ bib ]

Urbano Nunes, Rui Araújo, and A. T. de Almeida. Application of an adaptive self-tuning method in task-space position manipulator control. In Actas das 3as Jornadas Hispano-Lusas de Ingenieria Electrica, pages 1723--1733, Barcelona, Spain, September 23-25 1993. [ bib ]

Urbano Nunes, Rui Araújo, and A. T. de Almeida. Robust indirect adaptive-control method for task-space hybrid control of a puma 560. In Proc. IASTED International Conference Robotics and Manufacturing, pages 164--167, Oxford, England, September 23-25 1993. IASTED. [ bib ]

Urbano Nunes, Rui Araújo, and A. T. de Almeida. Application of a robust indirect adaptive-control method in task-space hybrid manipulator control. In Proc. IEEE 19th International Conference Industrial Electronics, Control and Instrumentation (IECON'93), pages 1842--1847, Lahaina, Maui, Hawaii, USA, November 15-19 1993. IEEE. [ bib | DOI ]

Urbano Nunes, Pedro Faia, Rui Araújo, Daniel Castro, and A. T. de Almeida. On the integration of robot end-effector sensors: Control and modelling issues. In Proc. IEEE International Workshop on Emerging Technologies and Factory Automation (ETFA'92), pages 451--457, Melbourne, Australia, August 12-14 1992. IEEE. [ bib | DOI ]

Urbano Nunes, Pedro Faia, Rui Araújo, and A. T. de Almeida. Hierarchical architecture for multisensor robot cell operation. In Proc. IEEE International Symposium on Intelligent Control (ISIC'92), pages 416--422, Glasgow, Scotland, August 11-13 1992. IEEE. [ bib | DOI ]

Urbano Nunes, A.T.Almeida, Pedro Faia, and Rui Araújo. Integrating force, tactile and proximity sensing for a flexible robotic system through a modular design. In S. G. Tzafestas, editor, Engineering Systems with Intelligence -- Concepts, Tools and Applications, pages 247--255. Kluwer Academic Publishers, The Netherlands, 1991. (Conference article: The European Robotics and International Systems Conference (EURISCON'91), Greece, June 1991.). [ bib | DOI ]

Urbano Nunes, Pedro Faia, Rui Araújo, and A.T. Almeida. Integration of proximity information on a robotic assembly cell. In Proc. Portuguese Conference on Pattern Recognition (RecPad'91), Aveiro, Portugal, 1991. (in Portuguese). [ bib ]

U.Nunes, P.Faia, R.Araújo, and A.T.Almeida. Development and control issues in contact and proximity sensing for a robotic system. In Proc. IEEE International Workshop on Intelligent Robots and Systems (IROS'91), pages 1357--1362, Osaka, Japan, November 3-5 1991. IEEE. [ bib | DOI ]

Urbano Nunes, Joaquim Delgado, Rui Araújo, and A.T. de Almeida. Evaluation of the state of the art and the current trends in the use of tactile sensors in robotic manipulation, March 1991. ESPRIT 5673 Exploratory Action, Systems and Automation Laboratory, Electrical Engineering Department, University of Coimbra. [ bib ]

Rui Araújo. Tactile sensors, November 1989. Technical Report (in Portuguese). Departament of Electrical Engineering, Faculty of Sciences and Technology, University of Coimbra. [ bib | .pdf ]