以弦波脈波調變控制無刷直流馬達之研究

Design of SPWM for Brushless DC Motor Control

陳志遠(Chih-Yuan Chen)

指導教授 ： 陳添智

崑山科技大學/工程學院/電子工程研究所/碩士(2009年)

摘要

本研究研製以弦波脈波調變技術來控制無刷直流馬達。由於微處理晶片技術的進步，微處理晶片的運算速度不斷提高，而價格卻不斷降低，故驅動控制器之技術，已逐漸朝向以微處理器系統整合晶片為基礎的全數位化控制系統。因傳統直流馬達（DC Motor）的驅動控制容易，所以早期的工業界中，非常受到歡迎，但它有碳刷損耗、須經常維護、效率低等缺點。近幾年來因微處理機的和電子技術進步，所以讓原本無刷直流馬達的複雜控制成為可能。因此無刷直流馬達基於無碳刷的損耗、不須經常維護、效率高等優點，已漸取代傳統直流馬達。弦波脈波調變(SPWM)是一種相當優越的直流馬達控制技術，若要用一般微處理機來實現，則其設計程式會相當繁雜且不易維護，不易達到應有之控制效能。因此本研究以德州儀器（TI）公司所生產之TMS320--LF2407數位訊號處理器晶片，借其精巧的乘法硬體線路，可讓弦波脈波調變程式設計變得容易，因此可以實現用單一晶片來驅動無刷直流馬達。

關鍵字

無刷直流馬達 ； 弦波脈波調變

並列摘要

This article put effort on the brushless motor control by sinusoidal pulse width modulation (SPWM) technique. Due to the rapid development of microprocessor technique, the CPU speed is increasing and its price is going down, and an all digital motor control driver by integrated microprocessor chip become feasible. The DC motors are more popular in the past industry due to the easy controllability. But we can not avoid all these drawbacks such as brush abrasion, frequent maintenance and low efficiency when using DC motor. The recent performance improvement in microprocessor makes the complex control for brushless motor driver possible. With the advantages of no brush abrasion, less maintenance and high performance, brushless DC motors have replaced the position of traditional DC motor in the industry. Sinusoidal pulse-width modulation is a good motor control technique, but it is hard to implement by common microprocessor. The complex algorithm and program is not easy to be updated, and hard to achieve effective control. The report adopts a digital signal processing chip, named by TMS320-LF2407 from Texas Instrument, to easily implement sinusoidal pulse-width modulation technique by virtue of the internal multiplier hardware. Finally, the brushless motor driver can be implemented in a single chip.

並列關鍵字

Brushless DC Motor ； Sinusoidal Pulse Width Modulation

參考文獻

[10] L. A. Jones and J. H. Lang, “A State Observer for the

“Microcomputer Control for Sensorless Brushless Motor,” IEEE

Permanent-Magnet Synchronous Motor,” IEEE Trans. Ind.

Interior Permanent Magnet Sychronous Motors with

reference guide, Texas Instrument.