Abstract
This paper studies a kind of sliding mode fault tolerant control method which used in aircraft engine sensor failure occurs. Firstly, reconstruct the fault signal of the fault sensor by using state observer. Secondly, design the sliding mode controller which can realize the processing for sensor fault, and proving the asymptotic stability of the system based on the Lyapunov stability theory. Finally, prove the aero-engine control system based on sliding mode has a certain fault tolerance capability through the simulation. In order to verify the effect of the fault tolerance by sliding mode controller, also introduced the PID controller and the H ∞ controller in the same fault signal to fault tolerant control, results are compared to illustrate that the sliding mode fault tolerant controller could improve the flight performance in the sensor fault cases.
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