基于ARM的PWM直流電機調(diào)速控制

                                 
摘要：本設(shè)計硬件系統(tǒng)主要采用PHILIPS公司的ARM7TDMI－S微控制器LPC2290型號芯片和H橋電機驅(qū)動電路組成。直流電機的驅(qū)動電路主要采用H橋型脈寬調(diào)制驅(qū)動電路；LPC2290內(nèi)集成PWM模塊，PWM信號通過程序控制LPC2290芯片產(chǎn)生。LPC2290芯片控制PWM信號的輸出并通過H橋型驅(qū)動電路驅(qū)動直流電機工作，實現(xiàn)直流電機的調(diào)速功能。該系統(tǒng)運行良好，控制精度高，調(diào)速范圍寬，具有一定的應(yīng)用價值。

關(guān)鍵字：ARM；H橋電路；PWM；直流電機調(diào)速

PWM DC motor speed control system Based on ARM
Abstract: The design of hardware system is constructed by H-bridge motor driver circuit and LPC2290 chip of PHILIPS company's ARM7TDMI-S microcontroller. The DC motor drive circuit adopt H-bridge PWM drive circuit. The PWM module integrated in LPC2290 is controlled by program to output PWM signal. The PWM signal controlled by LPC2290 drives DC motor through H-bridge circuit achieving DC motor speed control. The system with excellent control precision and wide speed control range will widely used in many fields.
Keyword: ARM; H-bridge circuit; pulse width modulation(PWM); DC motor speed control
目    錄
摘要…………………………………………………………………………1
1 引言………………………………………………………………………3
2 功能原理…………………………………………………………………3
3 系統(tǒng)硬件設(shè)計……………………………………………………………5
3.1 LPC2290芯片的體系結(jié)構(gòu)及功能…………………………………………5
3.2 電機驅(qū)動電路結(jié)構(gòu)及功能……………………………………………………7
3.3 電源電路………………………………………………………………………9
3.4 復(fù)位電路………………………………………………………………………9
3.5 時鐘電路……………………………………………………………………10
3.6 濾波電路……………………………………………………………………10
3.7 按鍵電路……………………………………………………………………11
4 軟件設(shè)計…………………………………………………………………11
4.1 系統(tǒng)軟件流程圖………………………………………………………11
4.2 主程序代碼……………………………………………………………12
5 總結(jié)………………………………………………………………………14
參考文獻……………………………………………………………………15
附錄…………………………………………………………………………16
附錄 1………………………………………………………………………16
附錄 2………………………………………………………………………17