【正文】 make the 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 無刷直流電動機的發(fā)展概況 ............................................................................. 1 本文的主要研究內(nèi)容 ......................................................................................... 2 2 直流無刷電動機結(jié)構(gòu)特點及基本工作原理 ............................................................... 3 直流無刷電動機的基本結(jié)構(gòu) ............................................................................. 3 無刷直流電動機的運行特性 ............................................................................. 5 機械特性 ................................................................................................. 5 調(diào)節(jié)特性 ................................................................................................. 6 工作特性 ................................................................................................. 7 無刷直流電動機的應(yīng)用與研究動向 ................................................................ 8 小結(jié) ..................................................................................................................... 9 3 直流無刷電動機控制系統(tǒng)的整體方案設(shè)計 ............................................................. 10 系統(tǒng)總體設(shè)計方案 ........................................................................................... 10 主電 路的設(shè)計 ................................................................................................... 11 MOSFET 的驅(qū)動電路設(shè)計 ................................................................................. 12 .1 驅(qū)動電路分類 ...................................................................................... 13 高端功率 MOSFET 驅(qū)動電路 .................................................................. 14 控制單元設(shè)計 ................................................................................................... 17 MC33035 無刷直流電動機控制器集成電路簡介 ................................ 18 電流檢測模塊設(shè)計 ................................................................................ 22 速度閉環(huán)設(shè)計 ........................................................................................ 23 誤差放大器設(shè)計 .................................................................................... 24 振蕩器設(shè)計 ............................................................................................ 24 控制器的開環(huán)電路設(shè)計 ................................................................................... 25 控制器的閉環(huán)電路設(shè)計 ................................................................................... 26 小結(jié) .................................................................................................................. 27 4 本文總結(jié) ..................................................................................................................... 28 參考文獻 ......................................................................................................................... 29 II 附錄 1：系統(tǒng)電路圖 ...................................................................................................... 30 附錄 2：簡 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) 20xx 屆本科生畢業(yè)設(shè)計 （論文） 1 1 概述 課題背景與研究意義 直流電機具有線性機械特性優(yōu)秀、起動轉(zhuǎn)矩較大、調(diào)速范圍寬、控制電路結(jié)構(gòu)簡單等優(yōu)點。在課題的最后階段對直流無刷電機系統(tǒng)控制效果專門 進行了實驗數(shù)據(jù)分析，并且對總體的設(shè)計過程做出了總結(jié)。 首先，以直流無刷電動機控制器的研究現(xiàn)狀為出發(fā)點，對直流無刷電動機的原理及結(jié)構(gòu)進行了總述，詳細分析了直流無刷電機的運行特性，推導(dǎo)出了其傳遞函數(shù)，并且創(chuàng)立了直流無刷電動機的數(shù)學(xué)模型。因此對 無刷 直流 電 動 機 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 直流無刷電動機控制系統(tǒng)設(shè)計 Brushless dc motor control system design 摘 要 當今社會，電動機的發(fā)展十分迅速，無刷直流電機是一種新型電機 。 直流無刷電機主要 由轉(zhuǎn)子 、 定子和轉(zhuǎn)子位置檢測元件等組成 ,它具有 結(jié)構(gòu)簡單、效率高、工作特性優(yōu)良 等特點 ,而且具有可靠性更高、制造維護更方便 、 應(yīng)用范圍更廣泛、體積更小、控制