NONLINEAR DYNAMICS MODELING AND BACKLASH COMPENSATING OF MULTI-STAGE GEAR TRANSMISSION SYSTEM

摘要

The existence of backlash greatly reduces the performance of the multi-stage gear transmission system and even leads to system instability. In order to solve the problems, the backlash is modeled by the nonlinear function and the lumped-parameter method is applied to establish the equations of the system. The influence of backlash impact on multi-stage gear transmission system is simulated by Matlab/Simulink and the control method to eliminate the influences of backlash is mainly studied. The compensating method is based on ideal model control theory to reduce backlash effect on the system. Instead of using a typical PID controller, the fuzzy controller with angle difference feedback is designed. Simulations results show the control method obviously effective in compensating the backlash and enhance the response and the stable precision of the multi-stage gear transmission system.