【正文】 brushless motors and their control device of great significance. This design is mainly produced by ON Semiconductor MC33035 and MC33039 design of the closedloop brushless motor speed controller. First, this paper starts from the current research situation of brushless DC motor controller. The structure of the brushless DC motor and principle are reviewed to establish a mathematical model of brushless DC motor, and a detailed analysis of the operational characteristics of the motor is derived out of its transfer function. This part describes the overall design of this system and establishes the overall framework of the system. Then, the paper introduces the main circuit design, MOSFET driver circuit design and controller peripherals circuit design, including emphatically expounds the functional modules of the system and its working principle and hardware design and realization. Finally, there is a experimental data analysis on the effects of this system control, and a summary of the design process. Key Words： the brushless DC motor； Hall signal detection； doubleloop speed regulation； mosfet driver I 目 錄 1 概述 ............................................................................................................................... 1 課題背景與研究意義 ......................................................................................... 1 無刷直流電動(dòng)機(jī)的發(fā)展概況 ............................................................................. 1 本文的主要研究?jī)?nèi)容 ......................................................................................... 2 2 直流無刷電動(dòng)機(jī)結(jié)構(gòu)特點(diǎn)及基本工作原理 ............................................................... 3 直流無刷電動(dòng)機(jī)的基本結(jié)構(gòu) ............................................................................. 3 無刷直流電動(dòng)機(jī)的運(yùn)行特性 ............................................................................. 5 機(jī)械特性 ................................................................................................. 5 調(diào)節(jié)特性 ................................................................................................. 6 工作特性 ................................................................................................. 7 無刷直流電動(dòng)機(jī)的應(yīng)用與研究動(dòng)向 ................................................................ 8 小結(jié) ..................................................................................................................... 9 3 直流無刷電動(dòng)機(jī)控制系統(tǒng)的整體方案設(shè)計(jì) ............................................................. 10 系統(tǒng)總體設(shè)計(jì)方案 ........................................................................................... 10 主電 路的設(shè)計(jì) ................................................................................................... 11 MOSFET 的驅(qū)動(dòng)電路設(shè)計(jì) ................................................................................. 12 .1 驅(qū)動(dòng)電路分類 ...................................................................................... 13 高端功率 MOSFET 驅(qū)動(dòng)電路 .................................................................. 14 控制單元設(shè)計(jì) ................................................................................................... 17 MC33035 無刷直流電動(dòng)機(jī)控制器集成電路簡(jiǎn)介 ................................ 18 電流檢測(cè)模塊設(shè)計(jì) ................................................................................ 22 速度閉環(huán)設(shè)計(jì) ........................................................................................ 23 誤差放大器設(shè)計(jì) .................................................................................... 24 振蕩器設(shè)計(jì) ............................................................................................ 24 控制器的開環(huán)電路設(shè)計(jì) ................................................................................... 25 控制器的閉環(huán)電路設(shè)計(jì) ................................................................................... 26 小結(jié) .................................................................................................................. 27 4 本文總結(jié) ..................................................................................................................... 28 參考文獻(xiàn) ......................................................................................................................... 29 II 附錄 1：系統(tǒng)電路圖 ...................................................................................................... 30 附錄 2：簡(jiǎn) 易速度閉環(huán)電路 .......................................................................................... 31 附錄 3.............................................................................................................................. 32 致謝 ................................................................................................................................. 39 天津職業(yè)技術(shù)師范大學(xué) 2020 屆本科生畢業(yè)設(shè)計(jì) （論文） 1 1 概述 課題背景與研究意義 直流電機(jī)具有線性機(jī)械特性優(yōu)秀、起動(dòng)轉(zhuǎn)矩較大、調(diào)速范圍寬、控制電路結(jié)構(gòu)簡(jiǎn)單等優(yōu)點(diǎn)。在課題的最后階段對(duì)直流無刷電機(jī)系統(tǒng)控制效果專門 進(jìn)行了實(shí)驗(yàn)數(shù)據(jù)分析，并且對(duì)總體的設(shè)計(jì)過程做出了總結(jié)。 首先，以直流無刷電動(dòng)機(jī)控制器的研究現(xiàn)狀為出發(fā)點(diǎn)，對(duì)直流無刷電動(dòng)機(jī)的原理及結(jié)構(gòu)進(jìn)行了總述，詳細(xì)分析了直流無刷電機(jī)的運(yùn)行特性，推導(dǎo)出了其傳遞函數(shù)，并且創(chuàng)立了直流無刷電動(dòng)機(jī)的數(shù)學(xué)模型。因此對(duì) 無刷 直流 電 動(dòng) 機(jī) 及其控制器 研究具有 很 大意義。 天津職業(yè)技術(shù)師范大學(xué)本科生畢業(yè)設(shè)計(jì) 直流無刷電動(dòng)機(jī)控制系統(tǒng)設(shè)計(jì) Brushless dc motor control system design 摘 要 當(dāng)今社會(huì)，電動(dòng)機(jī)的發(fā)展十分迅速，無刷直流電機(jī)是一種新型電機(jī) 。 直流無刷電機(jī)主要 由轉(zhuǎn)子 、 定子和轉(zhuǎn)子位置檢測(cè)元件等組成 ,它具有 結(jié)構(gòu)簡(jiǎn)單、效率高、工作特性優(yōu)良 等特點(diǎn) ,而且具有可靠性更高、制造維護(hù)更方便 、 應(yīng)用范圍更廣泛、體積更小、控制更容易等優(yōu)點(diǎn) 。 本課