反向回转双激振器振动机控制同步的理论研究

Theoretical Study on Controlled Synchronization of Vibrating Machine with Dual Exciters Rotating in Opposite Directions

本文对两激振器作反向回转的振动机控制同步进行了理论研究和计算机仿真。推导出了考虑质心偏移时两主轴的转矩差方程，在此基础上建立了控制系统的数学模型，设计了具有鲁棒性的非线性变结构滑模控制器．仿真结果表明，控制同步不仅可以消除由质心偏移、电机特性差等原因引起的稳态相位差，同时还能大大降低瞬态相位差，从而使机体的振动方向保持不变，减小起、制动过程中机体的摇摆振动．

This paper carries out the theoretical study and computer simulation on the controlled synchronizationof a vibrating machine with dual exciters rotating in opposite direction. A moment difference equation ofthe two rotors is derived,in which the eccentricity of the machine is considered. On this basis,the mathematical model of the control system is developed,and the controller of nonlinear variable structure and sliding mode with robustness is designed. The results of the simulation indicate that the controlled synchronization can not only eliminate the steady phase difference caused by the eccentricity,the performance difference of motors etc.,but also reduce significantly the dynamic phase difference. Therefore,the yi',ratingdirection of the machine is kept unchanged, and the staggering vibration of the machine in the starting andthe stopping processes is reduced.