Incipient Fault Detection of Linear System with Disturbance

Abstract

Abstract:

Abstract： A synthesized adaptive and sliding-mode observer (SMO) was designed for the incipient fault in a class of linear system with unknown disturbance, which can not only estimate the incipient fault, but also have strong robustness against unknown disturbances. The linear system was transformed by coordinate transformation into two subsystems, one of which was free from disturbances and an adaptive observer is designed to estimate the incipient fault, the other of which was affected by disturbances and incipient faults and a sliding mode observer is designed to eliminate the effect of unknown disturbances and ensure the robustness of the system. Simulation results of the quadrotor helicopter verify the efficiency of the proposed adaptive and sliding-mode observer-based incipient fault detection algorithm.

Key words: detetion of incipient fault, coordinate transformation, adaptive and sliding mode observer

CLC Number:

TP 24

LIU Chun,JIANG Bin,ZHANG Ke,WU Yunkai. Incipient Fault Detection of Linear System with Disturbance[J]. Journal of Shanghai Jiaotong University, 2015, 49(06): 889-896.

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