Disturbance Observer Based Fault Diagnosis

摘要：

　　This paper investigates the differences between disturbance observer techniques and residual generation method in fault diagnosis.We firstly point out the possible limitations of residual based approach compared with fault estimation based approach through sensors fault diagnosis of a linear motor driving system.On the one hand,it may produce a residual insensitive to the fault due to the self-correction feature of the observer.On the other hand,the diagnosis logic of it is complicated and does not work when the observability conditions do not hold.On this basis,the nonlinear disturbance observer is further introduced to perform actuator fault diagnosis for a nonlinear system.Simulation results of a linear motor driving system and a nonlinear missile system illustrate the efficiency of fault estimation based diagnosis approach.

关键词： Fault Diagnosis Missile System Motor System Nonlinear Disturbance Observer Robustness

作者: Jinya Su Wen-Hua Chen Baibing Li

作者单位: Department of Aeronautical and Automotive Engineering,Loughborough University,Loughborough,LE11 3TU, School of Business & Economics,Loughborough University,Loughborough,LE11 3TU,U.K.

会议类型: 国际会议

会议名称: The 33th Chinese Control Conference第33届中国控制会议

会议地点: 南京

会议语种:英文

页码: 3024-3029

在线出版日期: 2014-07-28（万方平台首次上网日期，不代表论文的发表时间）