变频空调无传感器无刷直流电机控制系统_毕业设计(论文).docVIP

变频空调无传感器无刷直流电机控制系统 青岛理工大学毕业设计(论文) PAGE \* MERGEFORMAT VI 变频空调无传感器无刷直流电机控制系统 摘 要 本设计主要介绍了变频空调无传感器无刷直流电机控制系统的优越性，了解课题的背景和意义，无刷直流电机控制系统是集电机、检测元件、反电势检测元件、控制元件、软件及硬件为一体。具有高可靠性、高效率性、调速方便等优点。在家电中广泛应用，在空调日益普及而消耗大量的能源，在能源危机问题日益突出减少能源消耗具有现实意义。 根据课题参数要求，选用Motorola公司研发的MC68HC908MR32单片机芯片，在硬件方面进行了驱动电路的设计、直流电源设计、保护电路设计、系统主电路设计、位置检测电路设计，分析无刷直流电机的结构及工作原理无刷直流电机的调速方法和机械特性。 在软件方面，利用汇编语言采用模块化编程和结构化编程，设计电机启动系统，本设计的无刷直流电机控制系统实现了电动、调速、助力三种工作模式，电路保护功能较为完善、硬件结构较为简单成本低，操作简单，具有升级空间，便于二次开发。 关键字：无刷直流电机，单片机，电路设计，系统设计 ABSTRACT This?design?introduces?the?superiority?of?inverter?air?conditioner.?Brushless?DC?motor?control?system?is?a?set?of?motors,?detection?devices,?back?EMF?detection?devices,?control?components,?software?and?hardware?as?a?whole.?It?has?high?reliability,?high?efficiency?whims?and?widely?used?in?home?appliances.?Air-conditioning?and?the?growing?popularity?of?large?amounts?of?energy,?the?energy?crisis?has?become?increasingly?prominent?in?the?reduction?of?energy?consumption?has?practical?significance. According?to?parameters?required?under?the?project,?I?choose?Motorolas?R??D?MC68HC908MR32?single?chip?and?design?the?hardware?aspects?of?the?drive?circuit,?DC?power?supply?design,?the?protection?circuit,?system?main?circuit,?position?detection?circuit,?analysis,?structure?and?brushless?DC?motor?work?brushless?DC?motor?speed?control?methods?and?mechanical?properties.On?the?software?side,?I?use?assembly?language?programming?and?modular?structured?programming?to?design?motor?starting?systems.The?design?of?the?brushless?DC?motor?control?system?has?achieved?the?electric,?speed,?power?three?operating?modes.?The?circuit?protection?function?is?more?perfect?and?the?hardware?structure?is?relatively?simple,?low?cost,?simple?operation.?It?also?has?headroom?to?facilitate?the?secondary?development. Keywords：brushless DC motors, single-chip, circuit design, system design 目 录 TOC \o 1-3 \h \z \u 摘 要 h I ABSTRACT h II 目 录 h III 第1章 绪 论 h 1 1.1课题背景及意义 h 1 1.2 变频空调电机的发展历