【摘要】 介绍了一种采用MCS－51系列的87C51单片机控制的同步电动机励磁装置；给出了系统的硬件和软件柜图；阐述了基本工作原理和控制思想；并就同步电动机在异步起动过程中转差率的检测和显示、起动后当转于转速达到亚同步时准确投励、整流触发脉冲的形成和分配等方面作了较为详细的分析。更多还原

【Abstract】 A sychronous motor exciting device controlled by MCS-51 serial 87C51 monolithic computer is introduced in this paper, and showing the system software and hardware block diagrams;expounding the basic operation principle and control method, analyzing sychro-motor in detail for check and display of slip ratio in the course of asychronous starting up; for precisely magnetizing when the started rotor’s rotation reaches sub-sychronization and for formation and distribution of recifying trigger pulse,etc.更多还原