Design of servo motor synchronous control system for instrumented wheelset calibration test bench

In order to improve the synchronization motion precision of servo motor synchronous control system of Instrumented Wheelset Calibration Test Bench (IWCTB), a new synchronous control system control model is presented based on fuzzy PI algorithm and the combine of equivalent control model and deviation coupling model. In this paper, in terms of the principle of fuzzy PI parameters, the free channel adjusts the PI parameters by the error of the free channel and the input signal, the follow channel adjusts the PI parameters by the error of the follow channel and the input signal, and the error between the following channel and the free channel. The purpose of this paper is to change the rules to eliminate the portal frame on both sides synchronous control steady-state error. Simulation results verify the proposed method can reduce the portal frame on both sides stable error, change the dynamic characteristics, and has better control effect.