小功率直流电机控制器(课程设计)

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1、电子技术综合训练设计报告题目：小功率直流电机控制器设计与制作姓名：学号：班级：同组成员：指导老师：日期：28摘要直流电机以其优良的性能应用于当代社会的各行各业中，而直流电机控制器的优劣直接影响了直流电机的使用。对于小功率直流电机控制器，应能实现对电机的正反转控制和无级调速控制。用H桥可实现电机的正、反转控制。通过对多谐振荡器的占空比调节产生PWM波形，用PWM方式实现对电机的无级调速控制。为方便使用，在控制器中增加了测速系统。利用光电转换装置将电机转速转换为脉冲电信号，用计数器对采集到的脉冲电信号进行计量，最后用寄存器对输出信号

2、锁存并加译码器和数码管进行译码显示。整个设计利用Multisim软件进行仿真测试，最后进行电路板的焊接与调试。关键词：直流电机控制器H桥PWM控制转速检测28目录1设计任务和要求·····················································41.1设计任务·························································41.2设计要求····················································

3、·····42系统设计·····························································42.1系统要求·························································42.2方案设计·························································42.3系统工作原理·····················································43

4、单元设计·····························································53.1电源模块··························································53.1.128电路结构及工作原理···········································53.1.2电路仿真·······················································63.1.3元器件的选

5、择及参数确定·······································63.2PWM调速模块·····················································63.2.1电路结构及工作原理···········································63.2.2电路仿真······················································83.2.3元器件的选择及参数确定···················

6、···················93.3H桥模块···························································103.3.1电路结构及工作原理···········································103.3.2电路仿真·······················································11283.3.3元器件的选择及参数确定····································

7、···123.4光电转换模块·······················································123.4.1电路结构及工作原理············································123.3.2元器件的选择及参数确定·······································133.5测速模块···························································133.5.1总体电路结构

8、及工作原理··········································133.5.2部分电路设计及仿真·············································144系统仿真················