基于FPGA的直流电机控制系统的设计.doc

基于FPGA的直流电机控制系统的 设计（硬件设计） 院 系： 专 业 班： 姓 名： 学 号： 指导教师： 2013年 6月  基于FPGA的直流电机控制系统的 设计（硬件设计） The Design of DC Motor Control System Based on FPGA （Hardware Design） 摘 要 FPGA和VHDL与EDA工具构成的数字系统现场集成技术，是本系统设计的核心部分，该门技术具有操作灵活、利用广泛以及价廉等特点。课题研究对象是直流电机，直流电机具有良好的启动和调速性能，被广泛地应用于对启动和调速有较高要求的拖动系统。 本次设计采用EPM570为核心设计的直流电机的控制系统，实现了系统中PWM信号的生成和电机速度控制与速度显示。系统针对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。 关键词：直流电机 FPGA 脉宽调制 Abstract This design introduces clearly the construction and the principle of DC Motor and the principle of the speed control based on PWM and FPGA integrated chip. And showing some relative knowledge upon the DC—motor timing，the basic theory and the way to implement．show some relative knowledge upon the DC—motor timing，the basic theory and the way to implement And the paper describes detailedly and operationally the composition program of DC motor speed control based on PWM and the design of the hardware circuit, the program design and the system simulation .FPGA and 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. This design adopts EPM570 control system for DC motor core design, implementation of the PWM signal system in the generation and motor speed control and speed display. 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 improve the performance of the system scalability. The system adopts software hardening ideas, applies the VHDL hardware language which is easy to be understood. Key Words: DC motor FPGA PWM 目 录 摘要I Abstract II 绪论 1 设计方案及系统分析 1.1 系统的实现及参数的要求 1.2 直流电机调速原理 1.3 PWM基本原理设计方案 3 1.3.1 PWM基本原理 1.3.2 PWM波形的设计方案 1.4