【正文】 ............................................................................................21. 概論 .......................................................................................................................................3 無刷直流電機的現(xiàn)狀 ..................................................................................................................3 電動自行車介紹及發(fā)展前景 ......................................................................................................4 本設(shè)計的主要工作 ......................................................................................................................62. 無刷電機控制系統(tǒng)分析 ...........................................................................................................6 三相無刷直流電機星形連接全橋驅(qū)動原理 ..............................................................................6 直流電動機的 PWM 調(diào)速原理 ......................................................................................................93. 無刷直流電機控制器硬件設(shè)計 ................................................................................................9 硬件組成 ....................................................................................................................................10 三相全橋逆變電路和驅(qū)動電路 ................................................................................................10 速度控制電路 ............................................................................................................................14 其他 ............................................................................................................................................144. 系統(tǒng)軟件設(shè)計 .......................................................................................................................15 概述 ............................................................................................................................................15 主程序 ........................................................................................................................................16 中斷 ............................................................................................................................................20 AD 轉(zhuǎn)換 .......................................................................................................................................21 PWM(脈沖寬度調(diào)制) ..................................................................................................................23 位置信號和驅(qū)動信號的對應(yīng)關(guān)系 ............................................................................................23 數(shù)字 PI 速度調(diào)節(jié) ......................................................................................................................245. 系統(tǒng)調(diào)制與實驗結(jié)論 ............................................................................................................27 系統(tǒng)硬件調(diào)試 ............................................................................................................................27 系統(tǒng)軟件調(diào)試 ............................................................................................................................28 實驗結(jié)論與建議 ........................................................................................................................29結(jié)論 ...........................................................................................................................................30參考文獻 ....................................................................................................................................31致謝 ...........................................................................................................................................32 范文范例參考 WORD 格式整理 單片機控制的無刷直流電機驅(qū)動系統(tǒng)設(shè)計專業(yè)：電科 班級：202202 作者：李青 指導老師：雷學堂摘要本課題是講述無刷直流電機控制系統(tǒng)集電機、逆變電路、檢測元件、控制軟件和硬件于一體，具有高可靠、高效率、壽命長、調(diào)速方便等優(yōu)點，在電動調(diào)速領(lǐng)域有著廣泛的應(yīng)用。電動自行車的發(fā)明和使用對解決燃油車造成的嚴重環(huán)境污染和緩解日益突出的能源危機問題有一定的現(xiàn)實意義。在軟件方面利用匯編語言，采用模塊化編程和結(jié)構(gòu)化編程。利用數(shù)字PI控制理論實現(xiàn)電機速度的閉環(huán)調(diào)制。本文還對影響控制器和單片機系統(tǒng)可靠性的因素進行了分析，實現(xiàn)了電動、定速、助力三種工作模式并且在系統(tǒng)出錯情況下具有自檢功能。關(guān)鍵詞無刷直流電機,PIC 單片機,電動自行車,控制系統(tǒng) 范文范例參考 WORD 格式整理 The Design of The Brushless DC MotorControl SystemSpeciality : dianke class:0502 Author: liqing Tuor:leixuetangAbstractThis thesis is part of the project named the controller of the Brushless DC Motor for electricbike. The control system consists of Brushless DC Motor, controlling part, sensor part, hardware and software controlling part. With its unique advantages of high efficiency, high reliability, good control ability and maintenancefree, it is widely used in many fields. To developth electricbike will be helpful to solve the pollution problem caused by the waste gas from the gasolineautomobiles and energy sources problems. The task is to design a Brushless DC Motor (BLDCM) control system for electricbike. According to the project, PIC16F72M CU produced by Microchip Company has been selected. The design of hardware including power circuit, hardware protection circuit, electronic mutate circuit have been carried out. The software was designed following the principle of modularization and structured programming and using assembly as the programme languages. Typical PI controls theory is used to control the speed. Less voltage protection, current excessive protection and wrong angle protection are designed to reinforce the system. Also, factors that affect the reliability of the system are discussed in this paper, and some methods are introduced soon after. This cont roller realizes three work modeselectromotion, stationary speed and assisting work mode. Another selftest mode, which works under error, is also designed. This kind of brushless DC motor control system is superior in many fields such as high reliability, simple hardware structure, low cost, and convenient for the further development.Key WordsElectric bike, Brushless DC Motor,