交流测速发电机 meaning in Chinese

ac tachometer generator
tachometric alternator

Abstract : this paper proposes an self - adaptive speed - accommodating control circuit , which can get the speed - error , and can test the change of frequency of feedback signals of the single phase ac tacho generator through self comparing and automatically corrects the speed
文摘:文章介绍了通过自比较来检测录音机主导轴单相永磁交流测速发电机反馈信号的频率变化，从而获得速度误差，并自动校正转速的一种自适应速度调节控制电路。