文档介绍：摘要
永磁无刷直流电动机是近年来随着电力电子技术和永磁材料的发展而迅速发展
起来的一种新型电机它用一套电子换向装置代替了有刷直流电动机的机械换向装
置既保留了有刷直流电动机宽阔而平滑的优良调速性能同时又克服了有刷直流电
动机机械换向带来的一系列的缺点因此在各个领域中得到了广泛的应用
本文首先在综合国内外有关文献的基础上介绍了永磁无刷直流电动机的发展历
程现状和趋势随后分析了永磁无刷直流电动机的工作原理根据其原理介绍了电
流源型晶闸管逆变器驱动系统的整体构成情况并针对系统中的各个单元做了详细介
绍包括其硬件构成及软件流程
针对本系统是多相多单元的控制系统本文着重介绍了应用于本系统中的 CAN
总线的原理和通信协议给出了基于 SJA1000 的 CAN 网络的硬件电路和软件流程
并详细介绍了试验过程中的调试方法随后对以 96 系列单片机和以 2407DSP 为核心
的两种控制系统进行了比较设计出以 DSP 为核心的控制器的软硬件的实现软件控
制方法上的改进可大大提高控制性能
本文还针对各种不同的控制方法进行了一些仿真工作对仿真结果进行了分析和
解释最后在完成主电路及控制电路调试的基础上进行了多项试验着重分析了系
统主要参数选择对系统运行的影响通过试验波形的对比和分析验证了本文所述内
容的正确性

关键词永磁无刷直流电动机 CAN 总线 DSP 参数选择仿真

I
Abstract
As an electric mechanical converter, Motor has been widely used from every field of
national economy to people's everyday life. The Permanent- Brushless DC motor
(BLDCM) is a new type of motor with the development of electronic technology and
permanent material, which has the merits of both Brush DC motor and
asynchronous motor. Because Permanent- BLDCM has the advantages of high
power-density, high efficiency, high rate between torque and current, simpleness for control,
it has been talent showing itself in motor drives family for recent years and widely used in
every industry area especially in speed-variable applications and servo systems.
First, this thesis introduces the development history, present research and trend,
analyzes the operational principle of the Permanent- BLDCM. Then, it deduces the
key parts of BLDCM’s control system, with introducing their hardware and software
design.
CAN bus is used to solve munications problem in this multi-phase control
system. Especially further analyses are made on CAN bus system principle, communication
agreement and debugging methods, including the hardware design and software flow chat
with SJA1000. This thesis also introduces the difference between the singlechip and DSP,
describes how to use DSP to design control system.
The thesis makes the simulation for d