基于arm的pwm直流电机调速控制.doc

基于ARM的PWM直流电机调速控制

                                 
摘要：本设计硬件系统主要采用PHILIPS公司的ARM7TDMI－S微控制器LPC2290型号芯片和H桥电机驱动电路组成。直流电机的驱动电路主要采用H桥型脉宽调制驱动电路；LPC2290内集成PWM模块，PWM信号通过程序控制LPC2290芯片产生。LPC2290芯片控制PWM信号的输出并通过H桥型驱动电路驱动直流电机工作，实现直流电机的调速功能。该系统运行良好，控制精度高，调速范围宽，具有一定的应用价值。

关键字：ARM；H桥电路；PWM；直流电机调速

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    录
摘要…………………………………………………………………………1
1 引言………………………………………………………………………3
2 功能原理…………………………………………………………………3
3 系统硬件设计……………………………………………………………5
3.1 LPC2290芯片的体系结构及功能…………………………………………5
3.2 电机驱动电路结构及功能……………………………………………………7
3.3 电源电路………………………………………………………………………9
3.4 复位电路………………………………………………………………………9
3.5 时钟电路……………………………………………………………………10
3.6 滤波电路……………………………………………………………………10
3.7 按键电路……………………………………………………………………11
4 软件设计…………………………………………………………………11
4.1 系统软件流程图………………………………………………………11
4.2 主程序代码……………………………………………………………12
5 总结………………………………………………………………………14
参考文献……………………………………………………………………15
附录…………………………………………………………………………16
附录 1………………………………………………………………………16
附录 2………………………………………………………………………17