Adaptive fault tolerant control for actuator bias of nonlinear systems

摘要：

This paper deals with active fault tolerant controller design against time-varying actuator fault, aiming to improve the robustness, sensitivity of fault detection and the rapidity of whole diagnosis and compensation procedure. A high-gain observer technique is developed to design a residual signal with the estimation error of system states and the derivatives of system output. Then a reconfiguration controller is directly constructed based on the fault information from diagnosis procedure. A qualitative relation is derived to connect the robustness, rapidity and sensitivity of the proposed fault diagnosis scheme with the observe parameters. By prescribing the observer/controller parameters, the set of detectable faults, the time of detection and compensation and the bound of the closed-system signals are quantified. Finally, the theoretical results are illustrated by a simulation example of surfacemounted permanent magnet synchronous motors (PMSM).

关键词： Nonlinear system detection accommodation actuator bias

作者: Haobo Kang Hongjun Ma Guanghong Yang

作者单位: College of Information Scienceand Engineering, Northeastern University, Shenyang, 110819, P. R. Chin College of Information Science and Engineering, Northeastern University, Shenyang, 110819, P. R. Chi

会议类型: 国际会议

会议名称: The 24th Chinese Control and Decision Conference (第24届中国控制与决策学术年会 2012 CCDC)

会议地点: 太原

会议语种:英文

页码: 4244-4249

在线出版日期: 2012-05-23（万方平台首次上网日期，不代表论文的发表时间）