浙江理工大学本科毕业设计（论文）

Zhejiang Sci-Tech University

Z S T U Bachelor’S THESIS

本 科 毕 业 设 计

论文题目： 基于CPLD的无刷直流电机驱动器设计

浙江理工大学本科毕业设计（论文）

浙 江 理 工 大 学 机械与自动控制学院

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浙江理工大学本科毕业设计（论文）

摘 要

无刷直流电机（BLDC）利用电子换相装置代替了有刷直流电机的机械换相装置，使其既具有直流电动机的调速性能，且体积小、重量轻、效率高、无励磁损耗等特点，同时又具有交流电机结构简单、运行可靠、维护方便等优点。因此在国民经济的各个领域，如医疗机械、仪器仪表、化工、纺织以及家用电器和办公自动化等方面都有广泛的应用。

而在对系统提出响应速度快、精度高、控制板体积小、可靠性高等要求下，采用基于单片机等芯片的控制系统一般难以实现这一要求，而基于DSP等芯片的控制系统一般成本又太高。但随着无刷直流电机的各种控制方法正日趋成熟，特别是大规模现场可编程门阵列FPGA、CPLD的出现，为实现这些要求提供了可能，本课题便是基于这一背景而提出的。

本文提出了一种基于CPLD的无刷直流电机控制器。重点分析了控制器的硬

件电路组成及其工作原理。并进一步绘制了控制器的PCB板。接着针对控制器所肩负的控制任务，提出了完整的控制器算法，并最后用Simulink仿真验证了所提出的控制算法。

关键词：BLDC；CPLD；BLDC控制器；BLDC Simulink 仿真；

浙江理工大学本科毕业设计（论文）

Abstract

Brushless DC motor (BLDC) is using electronic commutation device instead of mechanical commutation device of brush DC motor. BLDC’s speed performance has the characteristics of DC motors, and it is also has small volume, light weight, high efficiency and no excitation loss advantages. BLDC also has the advantages of AC motor, such as simple structure, reliable operation, convenient maintenance, etc…Therefore, BLDC had been using in the wide range fields of national economy, such as medical equipment, instrumentation, chemical, textile, household appliances and office automation.

The control requirements of high reliability, such as fast response speed, high precision, small size. Based on MCU chip control system is generally difficult to realize this requirement. And, the cost of control system based on DSP chip is generally too high. However with all kinds of Brushless DC motor control method is becoming more and more mature, especially the large-scale field programmable gate array FPGA, CPLD appeared, provides the possibility to realize these requirements. This topic is proposed on the basis of this background.

This paper presents a brushless DC motor controller based on CPLD . Focus on the analysis of the hardware controller and its working principle. And I have completed the design of PCB controller. According to the control task the controller had, a controller algorithm was proposed. And finally, using Simulink simulation verified that the proposed control algorithm.

Key words: BLDC; BLDC controller; BLDC Simulink simulation;