目录基于MC51单片机的直流电机PWM调速系统................................................................1摘要....................................................................................................................................1Abstract........................................................................................................................................21前言....................................................................................................................................31.1数字直流调速的意义............................................................................................31.2研究现状综述........................................................................................................31.2.1电气传动的开展现状........................................................................................31.2.2微处理器控制直流电机开展现状....................................................................41.3直流电动机调速概述............................................................................................51.3.1直流电机调速原理............................................................................................51.3.2直流调速系统实现方式....................................................................................62系统总体方案论证............................................................................................................72.1系统方案比拟与选择............................................................................................72.2系统方案描述........................................................................................................83硬件电路的模块设计........................................................................................................83.1逻辑延时电路方案论证设计................................................................................83.2驱动电路方案论证设计...........................................................................
