FTC approach based on predictive governor

In this paper, a new approach of reconfigured system is proposed to improve the performance of an active fault tolerant control system. The method is based on model predictive control and reference trajectory adjustment techniques. When an actuator fault occurs in the system, the controller balances to the nearest degraded reference trajectory. A constraint set and cost function are established to avoid actuators saturation and reduce control energy spent in closed loop dynamics. The effectiveness of the proposed method has been illustrated using a hydrothermal system subject to actuator failure and constraints on the actuator dynamic ranges. Satisfactory results have been obtained.

[1]  R. J. Patton,et al.  Fault detection, supervision, and safety for technical processes 1997 (SAFEPROCESS '97) : a proceedings volume from the 3rd IFAC symposium, Kingston Upon Hull, UK, 26-28 August 1997 , 1998 .

[2]  Michel Verhaegen,et al.  Controller reconfiguration for non-linear systems , 2000 .

[3]  M. V. Iordache,et al.  Diagnosis and Fault-Tolerant Control , 2007, IEEE Transactions on Automatic Control.

[4]  Seiichi Shin,et al.  A design method for fault-tolerant control systems based on H/sub /spl infin// optimization , 1996, Proceedings of 35th IEEE Conference on Decision and Control.

[5]  Alex M. Andrew,et al.  Fault Diagnosis: Models, Artificial Intelligence, Applications , 2005 .

[6]  Yixin Diao,et al.  Intelligent fault-tolerant control using adaptive and learning methods , 2002 .

[7]  Youmin Zhang,et al.  GRACEFUL PERFORMANCE DEGRADATION IN ACTIVE FAULT-TOLERANT CONTROL SYSTEMS , 2002 .

[8]  Youmin Zhang,et al.  Actuator Fault Tolerant Control Design Based on a Reconfigurable Reference Input , 2008, Int. J. Appl. Math. Comput. Sci..

[9]  Youmin Zhang,et al.  Bibliographical review on reconfigurable fault-tolerant control systems , 2003, Annu. Rev. Control..

[10]  Jan M. Maciejowski,et al.  Predictive control : with constraints , 2002 .

[11]  Jan Lunze,et al.  Reconfigurable Fault-tolerant Control: A Tutorial Introduction , 2008, Eur. J. Control.

[12]  Youmin Zhang,et al.  Accepting performance degradation in fault-tolerant control system design , 2006, IEEE Transactions on Control Systems Technology.

[13]  Jie Chen,et al.  An LMI approach to fault-tolerant control of uncertain systems , 1998, Proceedings of the 1998 IEEE International Symposium on Intelligent Control (ISIC) held jointly with IEEE International Symposium on Computational Intelligence in Robotics and Automation (CIRA) Intell.