摘要
针对一类满足Lipschitz条件的仿射非线性系统,提出一种执行器故障重构与容错控制方法。通过非奇异变化矩阵对系统进行降阶,设计出滑模故障重构观测器,优化滑模策略,使滑模故障重构观测器渐进估计系统的状态,并给出稳定性分析。运用等价输出控制方法直接获取故障信息,实现执行器故障的检测与重构。设计出主动容错控制器,通过补偿控制,完成执行器故障的容错控制。最后通过数值仿真验证了方法的可行性与有效性。
For a class of affine nonlinear systems that satisfy- the Lipschitz condition, a fault reconstruction and fault tolerant control method for the actuator is proposed. The nonsingular change matrix is used to reduce the order of the system, a sliding mode fault reconstruction observer is designed, and the sliding mode strategy is optimized to make the sliding mode fault reconstruction observer asymptotically estimate the state of the system, and give the stability analysis. The equivalent output control method is used to get fault information directly, so as to realize actuator fault detection and reconstruction. The active fault tolerant controller is designed and the fault tolerant control of the actuator is realized through compensation control. Finally, the feasibility and effectiveness of the method are verified by numerical simulation.
作者
王旭
沈艳霞
吴定会
WANG Xu;SHEN Yan-xia;WU Ding-hui(Internet of Things Teehnology Applieation Engineering Researeh Center of Ministry of Edueation Jiangnan University,Wuxi 214122,China)
出处
《测控技术》
CSCD
2018年第10期148-152,共5页
Measurement & Control Technology
基金
国家自然科学基金(61573167
61572237)
2017年江苏省研究生科研创新计划项目(KYCX17_1488)
关键词
非线性系统
滑模观测器
执行器
故障重构
容错控制
nonlinear system
sliding mode observer
actuator
fault reconstruction
fault tolerant control
