畢業(yè)設(shè)計(論文)-基于pwm控制的直流電動機調(diào)速系統(tǒng)設(shè)計matlab仿真-展示頁
2025-07-05 09:53本頁面
【正文】 構(gòu)成直流脈寬調(diào)速系統(tǒng)，隨著電力電子器件的迅速發(fā)展，采用門極可關(guān)斷晶體管GTO、全控電力晶體管GTR、PMOSFET、絕緣柵晶體管IGBT等一些大功率全控型器件組成的晶體管脈沖調(diào)寬型開關(guān)放大器（Pulse Width Modulated）,已逐步發(fā)展成熟，用途越來越廣。本文主要討論了直流調(diào)速系統(tǒng)的基本概念，在此基礎(chǔ)上系統(tǒng)地介紹了轉(zhuǎn)速負反饋單閉環(huán)調(diào)速系統(tǒng)，轉(zhuǎn)速電流負反饋雙閉環(huán)調(diào)速系統(tǒng)的組成，工作原理，脈寬調(diào)速系統(tǒng)的原理和控制方法，介紹了直流脈寬調(diào)速系統(tǒng)的控制電路和系統(tǒng)構(gòu)成。關(guān)鍵詞：調(diào)速，PWM控制，直流電動機，仿真AbstractIn the electric drive system, The DC Driving System which adjusts voltage is the widest used in the speed control methods. Besides to use the thyristor rectifier to adjust DC voltage, also it could use the other power electronic ponents’ controlled performance. Using pulse width modulation technology. Directly to modulate the constant DC voltage into variablepolarity,size adjustable DC voltage. to achieve the smooth regulation of the dc motor voltage. Constituting a DC motor PWM speed control system. With the rapid development of the electronic devices,The transistortype pulsewidthmodulated switching amplifier which posed of GTO, GTR, PMOSFET, IGBT, such as these Highpower fullcontrolled devices, had been gradually developed,and became widly used. In this paper, it primarily elaboraring the basic concepts of the DC motor speed control system. On this basis it systematic introductes the singleclosedloop negative feedback speed control position of the currentspeed twoclosedloop negative feedback speed control system., working principle,and the theory and control method of the PWM speed control introduces the control circuit and the system ponents of the PWM speed control system of the DC motor . Finally,with the MATLABSimulink, it use the simulation technique for the electric principle chart,to make the simulation analysis for the PWM speed control system of the DC motor.Key words: speed regulation, PWM control, DC motor, simulation目 錄第一章 引言 直流調(diào)速系統(tǒng)簡介…………………………………………………………………..5 PWM直流調(diào)速的研究背景和發(fā)展狀況…………………………………………….5 本設(shè)計的主要內(nèi)容…………………………………………………………………..6第二章 直流電機調(diào)速系統(tǒng) 直流電機調(diào)速系統(tǒng)的概述…………………………………………………………...7 旋轉(zhuǎn)變流機組直流電機調(diào)速系統(tǒng)………………………………………………7 靜止式可控整流器調(diào)速系統(tǒng)……………………………………………………7 直流斬波器或脈寬調(diào)速 ………………………………………………………...8 電機基本調(diào)速方法…………………………………………………………………...9 電樞串電阻調(diào)速…………………………………………………………………9 弱磁調(diào)速…………………………………………………………………………9 調(diào)壓調(diào)速………………………………………………………………………..10 轉(zhuǎn)速控制的要求和調(diào)速指標……………………………………………………….10 閉環(huán)直流調(diào)速系統(tǒng)………………………………………………………………….11…………………………………………………………...11 轉(zhuǎn)速電流雙閉環(huán)調(diào)速系統(tǒng)……………………………………………………..14 雙閉環(huán)系統(tǒng)的穩(wěn)態(tài)結(jié)構(gòu)圖和靜特性……………………………………….16 各變量的穩(wěn)態(tài)工作點和穩(wěn)態(tài)參數(shù)計算…………………………………….17 雙閉環(huán)直流調(diào)速系統(tǒng)的啟動過程分析…………………………………….18 轉(zhuǎn)速和電流兩個調(diào)節(jié)器的作用…………………………………………….20第三章 PWM調(diào)制技術(shù)與PWM變換器 PWM調(diào)制技術(shù) ……………………………………………………………………...21 模擬式PWM控制……………………………………………………………...21 數(shù)字式PWM控制……………………………………………………………...22 PWM變換器…………………………………………………………………………23 簡單的不可逆PWM變換器…………………………………………………...23 制動不可逆PWM變換器……………………………………………………...24 H型雙極式PWM變換器…………………………………………………….26第四章 PWM直流電動機調(diào)速系統(tǒng)的設(shè)計 PWMM直流調(diào)速系統(tǒng)的控制電路………………………………………………...28 系統(tǒng)設(shè)計方案的選擇……………………………
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