An Actuator Fault Isolation Strategy for a Class of Nonlinear Systems with Time-Delay using Adaptive Nonlinear Unknown Input Observer
This paper investigates the actuator fault isolation problem for a class of disturbance driven time delay nonlinear systems. To accomplish fault isolation,we use a bank of observers for all possible faulty models.The paper considers constant actuator faults, that is ,the output of some actuators are stuck at fixed undesirable constant values.The proposed fault isolation approach relies on a bank of adaptive nonlinear unknown input observers.Based on the designed observers,a bank of residuals are defined correspondingly.The actuator fault can be isolated if only one residual approaching zero while the others do not.The faulty model with residual approaching zero identifies the faulty actuator.
Fault detection Fault isolation Time-delay Nonlinear unknown input observer Adaptive estimation Lipschitz condition
Ying Gu Guang-Hong Yang
School of Mathematics and Physics , Dalian Jiaotong University,Dalian, 116028 School of Information School of Information Science and Engineering, Northeastern University, Shenyang, 110004
国际会议
The 22nd China Control and Decision Conference(2010年中国控制与决策会议)
徐州
英文
3846-3849
2010-05-26（万方平台首次上网日期，不代表论文的发表时间）