A general H-infinity fault tolerant control and management for a linear system with actuator faults

作者：Liu, Lijun^*; Shen, Yi; Dowell, Earl H.; Zhu, Chunhui

来源：Automatica, 2012, 48(8): 1676-1682.

DOI：10.1016/j.automatica.2012.05.018

• Fault tolerant control
• Selection of online controllers
• H-infinity control
• False FDI
• EFTS

This brief paper investigates the optimal selection of online controllers for a linear system with actuator faults in the framework of H-infinity control. The occurrence of actuator faults is modeled as a Markov chain to predict future faults. A compatible relationship of H-infinity controllers is proposed for successive fault modes. In order to shrink the set of all H-infinity controllers, seven methods are presented to construct a small set of controllers for different demands. Then five selection schemes are proposed to choose a proper controller from a given set of controllers for a given fault mode. Another selection scheme and a pre-selection scheme are presented when there might be false fault detection and identification. Considered together, they provide a powerful solution for all kinds of demands. A motivating example is used to illustrate the proposed methods.

• 出版日期2012-8
• 单位哈尔滨工业大学