直流电动机闭环调速系统设计.doc

直流电机闭环调速设计
内容提要:通过对单闭环调速系统的组成部分可控电源、由运算放大器组成的调节器、晶闸管触发整流装置、电机模型和测速电机等模块的理论分析,比较原始系统和校正后系统的差别,得出直流电机调速系统的最优模型。文章设计了以单片机AT89C51和三极管组成的H桥,利用脉宽调制(PWM)技术来控制直流电机。主要介绍了用单片机软件实现PWM调整电机转速的基本方法,再利用51单片机和其外围电路设计出关于单闭环调速的实际电路,通过PROTUS软件和KEIL软件编程,实现实际的调速系统的模拟仿真验证。
关键词:调节器最优模型闭环负反馈静差 KEIL
The design and simulation of
Single loop dc speed control system
Abstract : Through closed-loop speed regulation system of single part of the power supply, the operational amplifier with controllable coils, composed of thyristor trigger rectifier equipment, motor model and tachogenerators module, the theoretical analysis and correction of primitive system, it is concluded that the difference after system of dc motor drive system optimal model. This article designs the MCU AT89C51 and triode, composed of H bridge using pulse width modulation (PWM) technology to control dc motor. Mainly introduces the MCU software realization PWM motor speed adjustment of the basic method and program flow chart,reuse 51 SCM and its periphery circuit design of a single closed-loop speed about real circuit PROTUS software and KEIL, through software programming, realize the actual speed regulation system simulation validation.
Key words: Regulator optimal model KEIL closed-loop negative feedback static differenc
目录
1绪论 1
1
2 单闭环控制的直流调速系统简介 2
V—M系统简介 2
2
3
4
5
比例放大器 5
比例积分放大器 ..5
7
8
8
3 单闭环直流调速系统的设计及仿真 11
11
11
参数计算 11
12
12
13
13
动态稳定的判断,校正和仿真 14
16
PI串联校正的设计 16
18
19
19
19
19
20
20
4单元电路设计 24
数码管显示电路 24
按键输入电路 24
电机驱动电路 25
25
硬件总电路图 26
5 软件设计 27
27
中断程序流程图 27
程序清单 27
6调试 28
硬件调试 28