基于FPGA的直流电动机PWM设计.doc

摘 要 本系统针对需要实现对直流电机的调速，设计出了一种符合要求的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。系统采用了模块化的设计思路，为系统的设计和维护提供了方便，同时也提高了系统性能的可扩展性。系统采用一种软件硬化的设计思路，应用了VHDL硬件语言，该语言较容易理解。论文以直流电机为研究对象，应用了先进的FPGA技术，设计了一种全数字的步进电机控制系统，通过了仿真、综合和下载的各个程序测试环节，并在实验中得到了良好的应用。论文分析了直流电机工作原理以及其具体的控制过程，然后阐述了FPGA的设计原理以及所涉及到的相关芯片，接着对所要应用的硬件语言VHDL方面的知识进行了简要地介绍，这些为论文的具体设计部分提供了理论基础。 关键词：直流电机；FPGA；PWM波 I Abstract 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. It’s not only convenient for the system design and maintenance, but also improve the performance of the system scalability. The system adopts software hardening ideas, applies the VHDL hardware language which is easy to be understood.In this paper,DC motor as the study, with the application of FPGA-advanced technology, designs an all-digital stepper motor control system, through various program text links of the simulation, synthesis and downloads, and gets a good application in experiments.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. Key Words：DC motor；FPGA；PWM II 目 录 摘 要 ................................................................ I Abstract ............................................................. II 第1章 绪 论 ....................................................... 1 1.1 课题来源 ..................................................... 1 1.2 课题背景 ..................................................... 1 1.3 研究的目的及意义 ............................................. 2 1.4 研究直流电动机的相关知识 ........................................ 3 2.