畢業(yè)論文_基于單片機的直流電機pwm調(diào)速系統(tǒng)

1、 IZHEJIANG WATER CONSERVANCY AND HYDROPOWER COLLEGE畢業(yè)設計（論文） 畢業(yè)設計（論文）題 目： 基于單片機的直流電機 PWM 調(diào)速系統(tǒng) 系 （部）： （部）： 機械電子工程系 專業(yè)班級 專業(yè)班級： 數(shù)控 09-1 姓 名： 童曉華 學 號： 200933016 指導教師 指

2、導教師： 蔡楊 2012 2012 年 5 月 23 23 日IIIDC motor PWM speed control system based on MicrocontrollerABSTRACTThis thesis design is 51 series microcontroller as control core，the system produces PWM impulse whose d

3、uty ratio is controlled by digital PID arithmetic to control the power of DC motor,to make sure the running of DC motor's rotate speed. At the same time the design uses photoelectric sensor to transduce the electromo

4、tor speed into impulse frequency and feed it back to microcontroller as speed closed loop control system to attain the purpose of rotate speed's astatic modulation.In this system , 128?64LCDdisplay shows the curren

5、t parameters of the motor、the direction of rotation、speed and Running time. Through the 4?4 keyboard realized: digital PID parameters settings、the direction of rotation settings、speed setting、start and stop.KEY WORDS d