Abstract: The paper first applies the predictive function control(PFC) law to deal with the vibration active control of elastic linkage mechanisms of high speed by using the system discrete state-space equation. The reference track、base functions and constrain condition of voltage are chosen according to the characteristic of the dynamic responses of mechanism and actuator material. Through optimizing weight coefficients of base functions, the output control voltage is reached. The simulation results indicate that the PFC based on the simple model is effective for reducing the vibration amplitude of elastic linkage mechanisms of high speed,the maximum feedback control voltage required in the PFC is further reduced as compared to the optimal pole assignment control law. Meantime it can satisfy the real-time demand.

Key words: elastic linkage mechanism of high speed, vibration active control, predictive function control