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2008 | 18 | 4 | 539-551

Tytuł artykułu

Actuator fault tolerance in control systems with predictive constrained set-point optimizers

Treść / Zawartość

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
Mechanisms of fault tolerance to actuator faults in a control structure with a predictive constrained set-point optimizer are proposed. The structure considered consists of a basic feedback control layer and a local supervisory set-point optimizer which executes as frequently as the feedback controllers do with the aim to recalculate the set-points both for constraint feasibility and economic performance. The main goal of the presented reconfiguration mechanisms activated in response to an actuator blockade is to continue the operation of the control system with the fault, until it is fixed. This may be even long-term, if additional manipulated variables are available. The mechanisms are relatively simple and consist in the reconfiguration of the model structure and the introduction of appropriate constraints into the optimization problem of the optimizer, thus not affecting the numerical effectiveness. Simulation results of the presented control system for a multivariable plant are provided, illustrating the efficiency of the proposed approach.

Rocznik

Tom

18

Numer

4

Strony

539-551

Opis fizyczny

Daty

wydano
2008
otrzymano
2007-12-20

Twórcy

  • Institute of Control and Computation Engineering, Warsaw University of Technology, ul. Nowowiejska 15/19, 00-665 Warsaw, Poland
  • Institute of Control and Computation Engineering, Warsaw University of Technology, ul. Nowowiejska 15/19, 00-665 Warsaw, Poland

Bibliografia

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  • Ławryńczuk M., Marusak P. and Tatjewski P. (2007b). Set-point optimisation and predictive constrained control for fast feedback controlled processes, Proceedings of the 13-th IEEE/IFAC International Conference on Methods and Models in Automation and Robotics MMAR 2007, Szczecin, Poland, pp. 357-362.
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  • Marusak P. (2007a). Actuator fault toleration in control systems with analytical predictive controllers and output constraints, Proceedings of the 13-th IEEE/IFAC International Conference on Methods and Models in Automation and Robotics MMAR 2007, Szczecin, Poland, pp. 825-832.
  • Marusak P. (2007b). Predictive controllers integrated with economic optimization tolerating actuator faults: Application to a nonlinear plant, in J. Korbicz, K. Patan and M. Kowal (Eds), Fault Diagnosis and Fault Tolerant Control, Academic Publishing House EXIT, Warsaw, pp. 173-185.
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Typ dokumentu

Bibliografia

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