Publications

Export 66 results:
Sort by: Author Title Type [ Year  (Desc)]
2004
Palma, L. B., F. Coito, and R. Neves-Silva. "Sensor fault diagnosis based on neural observers and parameter estimation–application to the three-tank benchmark." VI Portuguese Conf. on Automatic Control, Faro. Indexed at ISI Web of Science (2004). Abstract
n/a
2003
Palma, L. B., F. V. Coito, and RN Silva. "Fault diagnosis based on black-box models with application to a liquid-level system." Emerging Technologies and Factory Automation, 2003. Proceedings. ETFA'03. IEEE Conference. Vol. 2. IEEE, 2003. 739-746. Abstract
n/a
Palma, L., R. Neves-Silva, and F. Coito. "Fault tolerant control approach applied to the three-tank system." (2003). Abstract
n/a
2002
Palma, L. B., F. Coito, and R. Silva. "Adaptive observer based fault diagnosis approach applied to a thermal plant." submitted to 10th Mediterranean Conference on Control and Automation (2002). Abstract
n/a
Oliveira, R., H. Pita, F. Coito, and A. Steiger-Garção O projecto OCTOPUS: O módulo Reconhecedor de Zonas Oxidadas–. Vol. 60. Jornadas de Engenharia de Telecomunicações e Computadores-ISEL Lisboa, Portugal, 2002. Abstract
n/a
2000
Palma, L. B., and F. V. Coito. "MODELING AND HYBRID CONTROL OF A NONLINEAR DC SERVOMOTOR." 4th Portuguese COnference on Automatic Control - Controlo 2000. SPCA, 2000. Abstract

A nonlinear DC servomotor model with friction, saturation, backlash and motor starting voltage is presented in this paper. Traditionally the position of a servo is controlled with a PD-controller. In the presence of disturbance, PID control results with overshoot and long recovery time. In simulations, the integral time of the controller is modified to fasten the recovery time. To control the position of the servomotor is proposed a Hybrid Control Architecture using a nonlinear PID controller and a Fuzzy PID controller. Simulation results with the Hybrid Controller are presented.

Santos, TO, RB Caetano, J. M. Lemos, and FJ Coito. "Adaptive Regulation of Arc Welding Temperature with Parallel Integral Action." (2000). Abstract
n/a
Santos, TO, RB Caetano, J. M. Lemos, and FJ Coito. "Multipredictive adaptive control of arc welding trailing centerline temperature." Control Systems Technology, IEEE Transactions on. 8 (2000): 159-169. Abstract
n/a
1999
Pinheiro-Pita, HJ, F. Coito, A. Steiger-Garção, R. Gonçalves, and L. Palma. "O projecto OCTOPUS: Modelo da Arquitectura de Software." Jornadas de Engenharia de Telecomunicações e Computadores – JETC99. 1999. Abstract

n/a

1997
Coito, F., J. M. Lemos, RN Silva, and E. Mosca. "Adaptive control of a solar energy plant: Exploiting accessible disturbances." International journal of adaptive control and signal processing. 11 (1997): 327-342. Abstract
n/a
Silva, RN, L. M. Rato, J. M. Lemos, and F. Coito. "Cascade control of a distributed collector solar field." Journal of Process Control. 7 (1997): 111-117. Abstract
n/a
Rato, L., RN Silva, J. M. Lemos, and F. Coito. "Multirate MUSMAR cascade control of a distributed solar field." Proc. of the European Control Conference ECC97. Brussels, Belgium (1997). Abstract
n/a
1996
Lemos, J. M., F. Coito, P. Shirley, P. Conceição, F. Garcia, C. Silvestre, and J. Sentieiro. "Long-range adaptive control algorithms for robotics applications." Progress in robotics and intelligent systems. 2 (1996): 134. Abstract
n/a
1991
Coito, FJ, and J. M. Lemos. "A long-range adaptive controller for robot manipulators." The International journal of robotics research. 10 (1991): 684-707. Abstract
n/a