The adaptive fuzzy PID control study of active vibration isolation system

With the development of space technology, the adverse effects to the spacecraft payload caused by the inevitable vibration from electromechanical system become increasingly prominent. To effectively reduce low frequency vibration, this paper presents a design scheme which takes voice coil motor servo system as active actuator of vibration isolation platform, and for the actual vibration isolation system, it is not possible to establish a precise mathematical model, so the combination of adaptive fuzzy control and PID control are applied to the active vibration isolation system based on voice coil motor. Simulation results show that the self-adaptive fuzzy PID control system has a good stability and anti-jamming capabilities, could isolate external vibration interference in a very wide frequency range, provides new and reasonable control ideas for the complex conditions and high index of control systems.