变频空调模糊控制系统的设计

西安科技大学电控学院学士学位论文-I-变频空调模糊控制系统的设计摘要随着人民生活水平的不断提高，家用空调器的需求量逐年增加。变频空调由于性能优异，节省能源等特点，逐渐成为各大空调器生产企业的发展方向，变频技术也日渐得到各空调器厂商的重视。模糊控制变频空调器的优点是高效节能，起动电流小，工作噪声小，温度控制精度高，算法简单，控制简单等，可以创造出人体适应的温度环境。采用无刷直流电机作为压缩机的驱动电机，能获得更好的控制性能，能效比高，且使用寿命更长。本论文通过对变频空调模糊控制系统的设计，达到了预期的要求。通过对模糊控制的基本理论以及模糊控制器的基本结构的阐述，认识了设计模糊控制的基本方法，并联系变频空调的实际，设计出适合变频空调使用的模糊控制器。本论文以变频空调的设计为主线，介绍了变频空调基本结构，无刷直流电动机的工作原理，以及模糊控制的基本思想，阐述了以下的一些主要问题:变频空调的优势，一般分体式空调的工作原理，无刷直流电动机工作原理，模糊控制的具体设计方案的选择以及结合实际并在MATLAB下进行建模仿真。关键词变频空调；模糊控制；MATLAB西安科技大学电控学院学士学位论文-II-Thedesignforfuzzycontrolsystemofvariable-frequencyair-conditionAbstractWiththeimprovementofpeople'sstandardofliving,homeair-conditionerwillbemoreandmorerequired.Recently,inverterairconditioner,withthemeritsofhighperformanceandenergyconservation,hasbecomethedevelopingdirectionofthemainairconditionermanufacturingenterprises.Invertertechniquehasbeenincreasinglyfocusedonbythemanufacturers.Theadvantageoffuzzy-controlinverterair-conditionliesonthehighefficiency,highprecisionoftemperaturecontrol,simplearithmetic,simplecontroltheory,lowstartupcurrentandlownoise.Furthermore,usingbrushlessDCmotorasthecompressorcangethighefficiencyandlonglifespan.Thevariable-frequencyair-conditionfuzzycontrollerarethemajorobjectofcontrolinthedesign.Itcontainsthebasictheoryoffuzzycontrolthebasicstructureoffuzzylogiccontroller,cognizesthemethodoffuzzycontrol,andcontactstheactualapplications,designsafuzzylogiccontrollerofvariable-frequencyair-condition.Thisthesisfocusesonthedesignofvariable-frequencyair-condition.Itexplainsthetheoryofvariable-frequencyair-condition,howthebrushlessDCmotorworks.,Themajorissueshavebeenaddressedasfollows:ThecharactersofbrushlessDCmotorandpartedair-condition,theadvantageofvariable-frequencyair-conditionthangeneralair-condition,implementationoffuzzyarithmetic,howtousetoolboxofMatlabtosetupthemodelofactualapplicationsofvariable-frequencyair-condition,SimulinkofMatlabandetc.Keywordsvariable-frequencyair-condition;fuzzycontrol;Matlab西安科技大学电控学院学士学位论文-III-目录摘要……...............................................................................................................IAbstract...............................................................................................................II第1章绪论........................................................................................................11.1课题背景...................................................................................................11.2空调控制系统的发展概况.......................................................................21.3模糊控制在变频空调器上的应用...........................................................3第2章变频空调器的结构及原理....................................................................42.1变频空调技术简介...................................................................................42.2变频空调的特点.......................................................................................42.3变频空调的优势.......................................................................................62.4变频空调器的工作原理及基本结构.......................................................82.4.1分体式空调室内机工作原理..........................................................102.4.2分体式空调室外机工作原理..........................................................102.4.3无刷直流电动机..............................................................................112.5本章小结.................................................................................................15第3章变频空调模糊控制策略的研究..........................................................163.1模糊控制简介.........................................................................................163.1.1模糊控制基本理论的产生和发展..................................................163.1.2模糊控制系统的组成......................................................................173.2变频空调模糊控制器的研究.................................................................183.2.1精确量的模糊化..............................................................................193.2.2模糊控制规则的确定......................................................................213.2.3模糊推理的实现..............................................................................223.2.4解模糊..............................................................................................223.2.5模糊控制表......................................................................................223.3空调器模糊控制软件的设计.................................................................233.4本章小结.................................................................................................24第4章MATLAB下系统建模与仿真分析....................................................264.1在Matlab下设计模糊控制器...............................................................264.1.1建立FIS的主框架..........................................................................264.1.2隶属度函数的确立..........................................................................274.1.3编辑控制规则..................................................................................274.1.4规则观测器和曲面观测器..............................................................284.2Simulink下系统建模仿真......