Disturbance observer based fault diagnosis

Jinya Su*, Wen Hua Chen, Baibing Li

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingPublished conference contribution

14 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationProceedings of the 33rd Chinese Control Conference, CCC 2014
EditorsShengyuan Xu, Qianchuan Zhao
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9789881563842, 9789881563873
Publication statusPublished - 11 Sep 2014
EventProceedings of the 33rd Chinese Control Conference, CCC 2014 - Nanjing, China
Duration: 28 Jul 201430 Jul 2014

Publication series

NameProceedings of the 33rd Chinese Control Conference, CCC 2014
ISSN (Print)1934-1768
ISSN (Electronic)2161-2927


ConferenceProceedings of the 33rd Chinese Control Conference, CCC 2014


  • Fault Diagnosis
  • Missile System
  • Motor System
  • Nonlinear Disturbance Observer
  • Robustness


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