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Articles

Vol. 6 No. 4 (2019)

Design and Analysis of Fault Diagnosis and Fault-tolerant Control for a Class of MIMO Nonlinear State Systems

  • Sunan HUANG
  • TAN Kok Kiong
Submitted
February 5, 2024
Published
2024-02-05

Abstract

This paper presents a fault diagnosis and fault-tolerant control algorithm, which can be used for a class of multi-input multi-output (MIMO) nonlinear state systems. First, a state estimator is proposed, which is able to detect fault occurrence, by using a residual signal. Second, when the state is at an abnormal condition, the fault-tolerant control will be triggered to minimize the impact of the fault occurrence. This fault-tolerant control is designed by using a robust controller (original controller), and an on-line approximator to capture a nonlinear function that indicates the fault occurrence. The detailed analysis is given for the proposed fault accommodation control.

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