基于模糊自适应滑模的非线性系统的故障调节  

Fault accommodation for nonlinear systems using fuzzy adaptive sliding control

作　　者：张颖伟[1] 王小刚[1] 王福利[1] 

机构地区：[1]东北大学教育部流程工业综合自动化重点实验室信息科学与工程学院,辽宁沈阳110004

出　　处：《控制与决策》2005年第4期408-411,416,共5页Control and Decision

基　　金：国家自然科学基金项目(60374003);辽宁省科学基金项目(20031016);沈阳市科学基金项目(1032040-1-01).

摘　　要：对于非线性系统提出故障调节控制的设计方法,通过附加控制律补偿故障所带来的影响.利用模糊逻辑系统估计故障并提供故障的修正行为,即主动容错.引入滑模控制抵消模糊逼近误差,经故障调节后闭环系统是稳定的.通过仿真算例证明了该方法的有效性.An active fault accommodation control law is developed for a class of nonlinear systems to guarantee the closed-loop stability in the presence of a fault, based on a fuzzy logic system representation of the dynamics due to faults. It uses fuzzy logic system to approximate the dynamic caused by the fault. Through the adaptive process of the parameters, the dynamics caused by the fault is counteracted. The fuzzy sliding mode control is introduced to attenuate the fuzzy approximation error. The closed-loop system is stable in Lyapunov sense and the tracking error converges to a neighbourhood of zero. The example shows that the fault accommodation control law is effective for nonlinear systems.

关 键 词：闭环稳定性 故障调节 主动容错 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]