高速电主轴直接转矩控制系统的建模与仿真

目的为了提高高速电主轴的静动态特性,实现高速电主轴的宽调速范围.方法采用高性能的直接转矩控制对异步高速电主轴进行控制和驱动,在掌握电主轴和直接转矩控制基本工作原理的基础上,利用MATLAB/Simulink模块库中提供的各种基本模块搭建各个子系统.并利用SIMULINK中的子系统封装技术把各子系统封装成各个模块,连接各个模块构成完整的高速电主轴直接转矩控制系统模型,并进行仿真实验.结果建立了高速电主轴直接转矩控制系统仿真模型,完成了仿真系统调节器及其参数设计,对系统的恒定负载和负载变化两种情况进行了仿真研究.结论仿真结果表明,将直接转矩控制方法应用于电主轴驱动控制系统是可行的,适应高速数控机床驱动控制系统的动态响应要求.

Model and Simulation of Direct Torque Control for High- Speed Motorized Spindle

This paper utilizes high performance direct torque control technology to drive motorized spindle so as to enhance the dynamic speed and to realize the wide regulating speed bound.Based on the principles of motorized spindle and direct torque control,basic blocks provided by MATLAB/Simulink Toolbox are used to build various subsystems,masks the subsystems to the blocks.Connecting the blocks to compose an integrated direct torque control for high-speed motorized spindle system model,and then simulate the system model.In this paper,the configuration of motorized spindle is studied and the procedure of direct torque control for motorized spindle is investigated,and the system principle sketch map is drawn.Simulation studies are done for the speed control of motorized spindle motor by Direct Torque Control method using the software tool MATLAB/Simulink.Simulation results within a limited range of speed variations show that the control technology of DTC has good characteristics with high precision of speed and torque control.DTC can control the electromagnetic torque and flux directly and independently,thus enabling the motorized spindle to achieve an excellent dynamic performance.Research results demonstrate that DTC can be considered as a very promising alternative for high-speed motorized spindle drives systems.