文档介绍：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
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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
目录
1 设计任务和要求·····················································4
设计任务·························································4
设计要求·························································4
2 系统设计·····························································4
系统要求·························································4
方案设计·························································4
系统工作原理·····················································4
3 单元设计·······