摘要世界范围内汽车保有量的爆炸式增长，传统的燃油汽车虽然在一定程度上给人们带来便利，但同时燃油汽车的尾气排放给日益严峻的环境问题带来更大的问题。纯电动汽车用可充电电池代替了传统的燃油，具有零排放无污染的特点。本文选用直流无刷电机作为车用电机，采用高速DSP芯片（TMS320F28335）作为控制电路的驱动芯片，并构建了一套完善的调速系统来驱动直流无刷电机。本文的主要内容为：84323

首先调查研究国内外电动汽车的发展背景和现状，了解本研究的目的和意义。

其次，本文分析了直流无刷电机控制系统的基本构成、工作原理。分析直流无刷电机PWM信号的分配情况和直流无刷电机的换相过程。

接着，本文对直流无刷电机的SIMULINK仿真结果做了分析。

最后，对系统进行了软、硬件设计。硬件部分对整体系统进行综述，详细分析了DSP接口电路、功率驱动电路，采样电路。软件主要从软件可靠性、结构和控制流程等方面对控制软件进行总体设计。程序主要包括主程序，中断服务程序和包含各种功能模块组成。

毕业论文关键词：直流无刷电机；数字信号处理器；DSP控制；SIMULINK仿真；软硬件设计

ABSTRACT With the explosive growth of car ownership across the world, traditional fuel vehicles, although to some extent, bring us convenience, has caused increasingly serious environmental problems that in turn incur other more severe problems。 Pure electric vehicles use rechargeable batteries instead of traditional fuels。 They make no emission and  pollution。 This design employs brushless DC motor as the motor vehicle, high-speed DSP chip (TMS320F28335) as a control circuit driver chip to build a sound speed control system to drive the brushless DC motor。 The main contents are as follows:

First, Investigation of the background and current development of electric vehicles at home and abroad。

Second, this paper analyzes the basic structure of the brushless DC motor control system and it working mechanism。 It analysis the distribution of DC brushless motor PWM signal。 Then, the paper makes a brief introduction of the SIMULINK mode of the brushless DC motor。

Finally, it intriduces the system software and hardware design。 The hardware part of the overall system are reviewed with a detailed analysis of DSP interface circuit, power driver circuit, and sampling circuit。 The overall principles of the design focus on software reliability, control flow structure and control routines。 Program includes the main program, interrupt service routines and contains various functional modules。

Keywords: Brushless DC Motor, digital signal processor, DSP control, SIMULINK Simulation,Hardware and Software Design。

目录

第一章 绪论 1

1。1 课题背景和意义 1

1。2 电动汽车的发展史 2

1。3 我国的研究现状 2

1。4 我国电动汽车驱动系统存在的问题 3

第二章 直流无刷电机 4

2。1 直流无刷电机的概述 4

2。2 无刷直流电机控制原理 5

2。3 直流无刷电机霍尔传感控制原理 6

第三章 直流无刷电机的SIMLUNK仿真 10

3。1 直流无刷电机的PID控制原理 10

3。2 直流无刷电机模型的搭建 11