Parameters Tracking Differentiator based on the Fuzzy Control and Varied Sliding Mode

Directing at the problem of torsional vibration occurred in the start-up procedures of long shaft drive transmission existed in printing equipment, we raised a variable structure control method based on Variable parameters fuzzy. The method not only displays feature of traditional non-linear variable structure control like nondeference derivation, planning the dynamic process and good capacity of resisting disturbance, but also able to effectively suppress the vibration generated when switching sliding mode surface. By means of simulation test and platform test, we prove that, compared with traditional PID controller, the PID controller with tracking differentiator in the staring process. The maximum overshoot of the system output is reduced to 4.8% from 72.2% and its adjustment time has been shortened 210ms, which help realize the improvement of start-up speed and vibration suppression.