Automobile seat active suspension system with actuator fault and control method

The invention discloses an automobile seat active suspension system containing actuator faults and a control method. The system comprises an automobile seat suspension system module, a state observer module, a virtual controller module, a fuzzy adaptive law module, an actuator fault diagnosis module and an actuator fault tolerance control module. According to the invention, the vertical displacement information of an automobile seat is output in real time through the automobile seat suspension system module, and the state observer module estimates the vertical speed of the automobile seat, the vertical displacement of an active suspension and wheels, the corresponding vertical speed, current information introduced into an electromagnetic actuator and other unmeasurable state information. A virtual controller signal and a fuzzy adaptive parameter are obtained through the virtual controller module and the fuzzy adaptive law module, and when the fault diagnosis module detects that the electromagnetic actuator br