基于光电码盘的电机高精度转角定位系统

High Precision Control and Angle-location of Motor Based on Photo-electricity Coder

在转动系统中,如何对电机进行高精度控制和小角度转角定位,是一个不易解决的问题。以TI公司的TMS320LF2812型DSP为核心控制器,用CPLD对光电码盘实现倍频,从而通过角速度的反馈量精确控制电机。文中讨论了光电码盘的工作原理,倍频方法,以及整个系统的硬件实现和控制策略。该系统完全可以实现电机的精密控制,有较好的实用性。

It is a difficult problem to control the motor in high precision and locate a very small angle in rotation systems. A novel design of motor-controlling system is presented,using TI TMS320lf2812 DSP as its key processor,with CPLD to multiply the frequency. The motor is accurately controlled through the feedback of the synchronous signal. The working principle of the system and the method of frequency multiplying is also discussed. The hardware structure and control method of the whole system is given. The method proposed in this paper is practical and effective.