Simultaneous fault estimation and fault tolerance control for switching systems
WANG Jia-wei
SHEN Yi
WANG Zhen-hua
Abstract：When fault occurs in the switching systems, fault diagnosis and fault tolerance control are usually required to be implemented successively. In order to improve the reliability of fault diagnosis and the timeliness of fault tolerance control for switching systems, this paper proposes a simultaneous fault estimation and fault tolerance control method. For linear switching systems satisfying the average dwell time constraint, simultaneous fault estimation and fault tolerance controller is firstly established based on the state observer, and the design problem is formulated as solving a multi-objective problem of the augmented error system under weighted H∞ performance index. Then the average dwell time technique and multiple Lyapunov functions method are used to design the parameters for the proposed simultaneous fault estimator and fault tolerance controller. Moreover, less conservative result is obtained through the relaxation matrix method. Finally, a numerical example is simulated to verify the effectiveness of the proposed method.
Keywords：fault diagnosisfault toleranceswitching systemssimultaneous fault estimation and fault tolerance controlweighted H∞performance indexaverage dwell timemultiple Lyapunov functionsrelaxation matrix
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 85-92 )