一类参数不确定的线性时变系统的故障调节

Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (12): 2924-2928.

一类参数不确定的线性时变系统的故障调节

高志峰，姜斌

南京航空航天大学自动化学院，江苏南京 210016

出版日期:2009-12-24 发布日期:2010-01-03

Fault accommodation for a class of linear timevarying systems with parametric uncertainties

GAO Zhi-feng，JIANG Bin

Coll. of Automation Engineering, Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, China

Online:2009-12-24 Published:2010-01-03

摘要/Abstract

摘要：

基于H∞控制思想，通过引入H∞性能指标，针对一类带参数不确定的多输入多输出线性时变系统,利用李雅普诺夫方法设计了一种新颖的鲁棒自适应观测器。通过两种不同自适应故障估计律的设计和比较，得到了影响这类鲁棒自适应观测器故障估计性能的几个因素。所设计的自适应观测器用于一类带参数不确定的线性时变系统的故障调节问题，故障估计误差能够最终一致有界且满足事先所给定的H∞性能指标。最后,对一个飞控系统进行仿真，验证了所得结论的有效性和可行性。

Abstract:

Based on the H∞ control theorem, by introducing the H∞ performance index, a novel roubst adaptive observer using Lyapunov approach is designed for a class of MIMO linear timevarying systems with parameter uncertainties. By designing two differenent adaptive fault estimation laws and comparing with each other， several factors influencing the performance of fault estimation for the class of adaptive observer are obtained. The designed adaptive observer is used to the problem of fault accommodation for a class of linear timevarying systems with parameter uncertainties, and the fault estimation error is ultimately bounded uniformly and satisfies the prescribed H∞ performance index. The simulation result for a flight control system illustrates the effectiveness and feasibility of the proposed method.

高志峰，姜斌. 一类参数不确定的线性时变系统的故障调节[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2924-2928.

GAO Zhi-feng，JIANG Bin. Fault accommodation for a class of linear timevarying systems with parametric uncertainties[J]. Journal of Systems Engineering and Electronics, 2009, 31(12): 2924-2928.