毕业论文：基于EDA的直流电机PWM控制设计.doc

摘要 论文以直流电机为研究对象，应用了FPGA技术，设计出了一种全数字的步进电机控制系统。 本论文分析了直流电机工作原理及其具体的控制过程，并阐述了FPGA的设计原理以及所涉及的相关芯片，然后对所用的硬件语言VHDL的知识进行简要地介绍，这些为论文的具体设计提供了理论基础。 本系统针对实现直流电机的调速，设计了一种符合要求的并连续可调的脉冲信号发生器，对整个系统进行模块化设计，并且每个子模块都通过了仿真测试。系统采用模块化的设计思路，使系统的设计和维护更加方便，也提高了系统性能的可扩展性。 FPGA、VHDLEDA工具构成的数字系统集成技术，是本设计的核心部分，该技术具有操作灵活、利用广泛及价廉等特点。系统设计采用全数字化的控制方案，使系统更紧凑、更合理及经济节约。由于系统的数字化，使整个系统运行得十分可靠，调试也极为方便。 关键词：　直流电机，可编程门阵列，硬件描述语言 Abstract In this paper, DC motor as the study, with the application of FPGA technology, designs an all-digital stepper motor control system. This paper analyzes the DC motor works, as well as its specific control process, describes the FPGA design principles and the related chips those are involved, then gives a brief introduction on the knowledge of applied hardware language VHDL , all these provides a theoretical basis for the specific design sections of the paper. The system against the achievement of the DC motor speed control, designs a continuously adjustable pulse signal generator that can meet the requirements, and modular programmings for the whole system, each sub-module has pasted the simulation tests. The system uses a modular design concept. Its not only convenient for the system design and maintenance, but also improves the performance of the system scalability. FPGA, VHDL and EDA tools constitute the field of digital system integration technology, as a core part of the system design, the skill with operational flexibility, cheap and widely use. The system uses a fully digital control scheme, making the system more compact, more rational and economical. Because the systems all digital, the operation of the whole system become very reliable, the debugging is convenient, too. Key Words：　DC motor, programmable gate array, VHDL 目录 第1章 绪论 1 1.1课题背景 1 1.2研究的目的及其意义 2 第2章 电机的基本知识 3 2.1直流电机的特点 3 2.2直流电机基本结构 3 2.2.1定子部分 4 2.2.2转子部分 4 2.3直流电机工作原理 5 2.4直流电机PWM调速原理 5 第3章 FPGA与硬件描述语言 7 3.1现场可编程逻辑器件 7 3.2硬件描述语言设计方法 7 3.2.1硬件描述语言发展概况 7 3.2.2 EDA简要介绍 8 3.2.3采用硬件描述语言的设计流程 8 第4章 设计原