Simplification techniques for EKF computations in fault diagnosis-suboptional gains

Chuei Tin Chang, Jung Ing Hwang

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The extended Kalman filter (EKF) is one of the most popular model-based techniques for fault detection and diagnosis. In the present study, the idea of suboptimal EKF is utilized to enhance computation efficiency without sacrificing diagnostic accuracy. In particular, a simple procedure is developed to decompose the filter model according to the precedence order of the state/parameter estimation process. As a result, a large portion of the computations needed for propagating error covariances and updating state estimates can be neglected. Extensive simulation results are also presented to demonstrate the effectiveness of these proposed techniques.

Original languageEnglish
Pages (from-to)3853-3862
Number of pages10
JournalChemical Engineering Science
Issue number22
Publication statusPublished - 1998 Nov 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Simplification techniques for EKF computations in fault diagnosis-suboptional gains'. Together they form a unique fingerprint.

Cite this