The Development Of Digital Motor Speed Control System Based On DSP

In order to provide designers a good digital motor control system, this article introduces a digital motor speed control system based on DSP. The system can be used to control AC motor, DC motor and the Switching Reluctant motor. The whole system is designed to be modularization for general using and good implement. It is consisted of control circuit, main circuit, detected circuit and DC-DC power supply circuit.The control circuit is based on the TMS320F2812 which can realize the motor speed control algorithm and other algorithms in C language. The main circuit includes rectify, PFC, inverter and the motor driving circuits. The detected circuit is used for signal sampling and processing. The DC-DC power supply is designed with a single chip switching power supply mode in which EMI technology is used to reduce the interference.