文档介绍：编号:
审定成绩:
重庆邮电大学
毕业论文
设计(论文)题目:
基于Fuzzy-PI控制的直流电机系统的研究
学院名称:
自动化
学生姓名:
邓鹏
专业:
电气工程及其自动化
班级:
0830905
学号:
2009214826
指导教师:
冯辉宗
答辩组负责人:
填表时间:二○一三年五月
重庆邮电大学教务处制
摘要
在当代社会,电机的应用十分广泛。随着生产技术的不断发展和提高,对电机的调速特性的要求就显得特别高,同时对电机转速的测量也提出了更高的要求。
在国外,这类调速系统的价格是十分昂贵的;而在国内的同类型的产品性能就远远不及人家,要求也达不到一个绝对稳定的状态。因此,设计一个性能良好的直流电机调速系统,对于当代的社会生产特别是工业方面就具有十分重要的现实意义。
本文设计了一种以STC12C5410AD单片机作为主控制器,以普通PI和模糊PI两种控制算法来控制电机,使用霍尔传感器进行测量,以LCD来显示的直流电机转速测量系统。首先对模糊PI控制作了简单的介绍,构建直流电机调速系统的模型。本系统采用集成霍尔传感器敏感速率信号,具有频率响应快,抗干扰能力强等特点。文章介绍了霍尔传感器的工作原理,阐述了霍尔传感器测速系统的工作过程,利用脉冲计数法实现了对转速的测量,通过LCD直观地显示电机的转速值。实现对直流电机的良好调速性能。结合硬件电路设计,采用模块化方法进行了软件设计。编制了电机转速的测量设计了测量模块、转速模块、显示模块等的C51程序,来表明基于模糊PI控制的直流电机调速方案是可行的,并且有较好的发展前景。
【关键词】单片机电机转速测量模糊PI 霍尔传感器液晶显示
ABSTRACT
In contemporary society, the motor is widely used. As production technology continues to develop and improve, we have higher requirements about the characteristics of the motor speed control, and we have higher requirements about the measurement of the motor speed, too.
In other countries, this type of speed control system is very expensive. In china, the performances of the same type of product are far worse than other countries. And it is hard to reach an absolutely stable state. Therefore, designing a good performance DC motor speed control system has a very important practical influence to the modern society of China.
This paper presents a DC motor speed measurement system which using STC12C5410AD as the main controller, using ordinary PI and Fuzzy-PI two kinds algorithms to control the motor, using a Hall sensor to measure, the LCD displays the DC motor speed. Firstly, we make a brief introduction about Fuzzy-PI, and build a DC motor speed control system model. The system uses integrated Hall sensor as the measure part. It has fast frequency response, anti-interference ability and other characteristics. This paper introduces the working principle of the Hall sensor, Hall sensor speed system elaborated the working process, the use of pul