TMS320F2812 based speed regulation controller of brushless DC motor

Abstract

A TMS320F2812 based speed regulation controller of a brushless DC motor includes a brushless DC motor regulation controller of the brushless DC motor and a power supply used for providing power supply for a central processing unit and a signal conditioning circuit, wherein the brushless DC motor regulation controller is jointly formed by a central processing unit serving as a control panel, a signal conditioning circuit serving as a conditioning board and a three-phase inverter bridge module serving as a driving board, which are connected through sensors and a bridge rectification and filtering circuit and are connected from the upper layer to the lower layer sequentially through contact pins, wherein the sensors are the current sensor and the voltage sensor connected to the central processing unit respectively. According to the invention, the design manner of a layered circuit that the controller is divided in three circuit boards from top to bottom is adopted, namely the lower layer is the main circuit inversion module driving board, the middle layer is the signal conditioning board, and the upper layer is the core control panel; the structure is simple and easy, the reliability is high, the replacement is easy, and the generality is stronger; and the TMS320F2812 based speed regulation controller can realize the counter electromotive force zero passage balancing un-position sensor steering and the Hall position signal steering simultaneously.

Description

technical field [0001] The invention relates to a DC brushless motor. In particular, it relates to a TMS320F2812-based DC brushless motor speed controller with strong versatility. Background technique [0002] With the rapid development of my country's industry, brushless DC motors have been widely used in automobiles, tools, industrial control, automation and aerospace, etc. Compared with traditional DC motors, brushless DC motors save mechanical The brush device is replaced by electronic commutation, which has reliable performance, never wears out, and has a low failure rate. The service life is about 6 times higher than that of the brush motor, and it has an incomparable leap in performance compared with the DC motor. It is the most ideal speed regulating motor today. The control system of the new brushless DC motor is a fusion of disciplines involving power electronics, electromechanics, automatic control, and material science. With the development of power switches, mic...

AI Technical Summary

Problems solved by technology

At present, most of the brushless DC motor speed controllers do not have a wide range of speed regulation, low precision, and large volume. For specific types of motors, traditional brushless DC motors contain Hall position sensors, which are provided to the motor as commutation information. The Hall sensor increases the cost of the motor and the size of the motor. The controller of the new brushless DC motor is developed by using the position sensorless control technology.

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