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1、模糊PID控制及其MATLAB实现姓名:专业班级:学号:授课教师:摘要PID(比例积分微分)控制具有结构简单、稳定性能好、可靠性高等优点,尤其适用于可建立精确数学模型的控制系统。而对于一些多变量、非线性、时滞的系统,传统的PID控制器并不能达到预期的效果。随着模糊数学的发展,模糊控制的思想逐渐得到控制工程师们的重视,各种模糊控制器也应运而生。而单纯的模糊控制器有其自身的缺陷—控制效果很粗糙、控制精度无法达到预期标准。但利用传统的PID控制器和模糊控制器结合形成的模糊自适应的PID控制器可以弥补其缺陷;它将系统对应的误差和误差变化率反馈给模糊控制器进而
2、确定相关参数,保证系统工作在最佳状态,实现优良的控制效果。论文介绍了参数自适应模糊PID控制器的设计方法和步骤。并利用MATLAB中的SIMULINK和模糊逻辑推理系统工具箱进行了控制系统的仿真研究,并简要地分析了对应的仿真数据。关键词:经典PID控制;模糊控制;自适应模糊PID控制器;参数整定;MATLAB仿真ABSTRACTPID(ProportionIntegrationDifferentiation)control,withlotsofadvantagesincludingsimplestructure,goodstabilityandhig
3、hreliability,isquitesuitabletoestablishespeciallythecontrolsystemwhichaccuratemathematicalmodelisavailableandneeded.However,takenmultivariable,nonlinearandtime-lagintoconsideration,traditionalPIDcontrollercannotreachtheexpectedeffect.AlongwiththedevelopmentofFuzzyMathematics,co
4、ntrolengineersgraduallypaymuchattentiontotheideaofFuzzyControl,thuspromotingtheinventionoffuzzycontrollers.However,simplefuzzycontrollerhasitsowndefect,wherecontroleffectisquitecoarseandthecontrolprecisioncannotreachtheexpectedlevel.Therefore,theFuzzyAdaptivePIDControlleriscrea
5、tedbytakingadvantageofthesuperiorityofPIDControllerandFuzzyController.Takenthiscontrollerinuse,thecorrespondingerroranditsdifferentialerrorofthecontrolsystemcanbefeedbackedtotheFuzzyLogicController.Moreover,thethreeparametersofPIDControllerisdeterminedonlinethroughfuzzification
6、,fuzzyreasoninganddefuzzificationofthefuzzysystemtomaintainbetterworkingconditionthanthetraditionalPIDcontroller.Meanwhile,thedesignmethodandgeneralstepsareintroducedoftheParameterself-settingFuzzyPIDController.Eventually,theFuzzyInferenceSystemsToolboxandSIMULINKtoolboxareused
7、tosimulateControlSystem.TheresultsofthesimulationshowthatSelf-organizingFuzzyControlSystemcangetabettereffectthantheClassicalPIDcontrolledevidently.Keywords:ClassicPIDcontrol;FuzzyControl;Parameterstuning;theFuzzyAdaptivePIDController;MATLABsimulation目录第一章绪论11.1研究的背景及意义11.2经典PI
8、D控制系统的分类与简介21.2.1P控制21.2.2PI控制21.2.3PD控制21.2.4比例积分微分(P