基于单片机的伺服电机转速控制系统

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1、基于单片机的伺服电机转速控制系统摘要本设计使用AT89C52作为控制芯片,以PI(比例-积分)调节控制算法为基础,采用软件编程产生脉宽比可控的脉宽调制信号,再通过功率放大电路H桥驱动电路来控制伺服电机电枢电压，从而完成对伺服电机转速的调节,达到了较好的控制性能。同时通过4*4小键盘输入设定的伺服电机转速，用光电编码器来测定伺服电机转速，显示在4位LED上。关键词：直流调速；PID控制算法；AT89C52；脉宽调制；伺服电机ITheServoMotorSpeedControlSystemBasedOnMCUAbstractTheconventionalDCdrivesystemofSCR,w

2、hichControlloopisconsistingofsimulateelectroniccircuits,andtheSCRtriggerismostlymadeupofthediscretecomponent,sothehardwaredevicesareextremelycomplexintheControlloop，theinstallationandtrialrundifficultly,therelativefailurerateishigh.Tosolvetheproblems,thispaperpresentsonekinddesignmethodoftheservom

3、otorspeedcontrolsystembasedonMCU,andintroducesthedesignofthePIDcontrolalgorithm.———————————————————————————————————————————————ThisdesignusesAT89C52asthecontrollerchip,takesPI(proportion-integral)regulationcontrolalgorithmtobethefoundation,adoptssoftwareprogrammingtogetthesignalforPulse-Width-Modu

4、lation,andcontrolsthearmaturevoltageofservomotorthroughHbridgedrivingcircuitinpoweramplificationelectriccircuit,thusitcompletestoadjusttheservomotorrotational-speed,andachievesthegoodcontrolperformance.Meanwhileitsetstheservomotorrotational-speedthroughthe4*4smallkeyboard,andminutesthespeedofthese

5、rvomotorbytheopticalencoder,thenshowsthespeedoftheservomotoronthe4LED.Keyword:Direct-currentspeedregulation;PIDcontrolalgorithm;AT89C52;Pulse-Width-Modulation;ServomotorII目录摘要...........................................................................................................................

6、..............IAbstract......................................................................................................................................II第一章引言...............................................................................................................———————————————————————

7、————————————————————————.............11.1课题的研究背景及意义.............................................................................................11.2转速控制系统设计目标及技术要求.................................................