基于LPC1114 的直流电机PWM调速.doc

文档介绍：毕业设计说明书(论文)中文摘要
直流电动机拥有良好的转速可调性能;本论文实现了闭环直流调速系统的设计,在他励直流电机的数学模型的基础上,得到了单反馈闭环控制的直流调速系统的结构。以TinyM0为核心设计了直流调速系统的H桥电机驱动电路和光电码盘反馈控制电路,研究了利用单片机如何产生PWM信号和控制PWM信号从而实现对直流转速进行控制的方法,同时研究了数字增量式PID 控制算法和程序,实现了低成本的直流电机转速无静差控制方法。
关键词脉宽调制直流电机 PID控制算法 H桥驱动
毕业设计说明书(论文)外文摘要
Title Based On The LPC1114 PWM Speed Controller System of
The DC Motor_Drives_ ____
Abstract
DC motor has a good speed adjustable performance. In this paper , the design of the closed loop DC motor system is presented. Based on the mathematic model of separately excited DC motor, the control structure of the single -feedback -loop controlled DC velocity modulation system was obtained. With Tiny M0 as controlling core,H-bridge motor driven circuit and opto-electrical coder feedback-based controlling circuit of DC velocity modulation system were designed ;in this paper ,how to produce the PWM single from the chip and studies the use of single-chip PWM signal in order to achieve control of DC motor speed control method and the incremental PID algorithm and the velocity controlling program were investigated at the same time. Using the new design, a kind of DC motor velocity controlling method with feature of low cost and no static error was realized.
Keywords PWM DC motor PID H-bridge
目次
1 绪论……………………………………………………………………………………1
课题的研究意义………………………………………………………………………1
开发工具介绍…………………………………………………………………………1
LPC1114微控制器介绍………………………………………………………………3
2 系统整体方案设计………………………………………………………………5
系统框架流程图…………………………………………………………………5
模块设计…………………………………………………………………………6
3 系统硬件电路设计…………………………………………………………………9
直流电动机介绍…………………………………………………………………9
驱动电路介绍………………………………………………………………………11
H桥驱动原理………………………………………………………………………13
H桥驱动电路的设计………………………………………………………………16
光电编码测速器…………………………………………………………………24
显示电路…………………………………………………………………………28
4 系统软件设计………………………………………………………………………32
PWM信号软件设计……………………………………………………………32
测速软件流程设计………………………………………………………………34
PID算法介绍…………………………………………………………………35
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