锁相环在转速测量中的应用

THE APPLICATION OF PLLIN THE MEASUREMENT FOR R·P·M

本文将锁相环电路用于转速测量．使测量具有精度高、响应速度快、抗干扰能力强、测量范围宽，功耗小等特点．

The measurement of retation speed proviaed in this paper possesses these feathres, the precision is high (being superior to 0. 02% ), the restonse speed is fast,the range of measurement is wide (R. P. M=0-42000) and almostall the devices adopt CMOS therefore the range of supply mains is broad (5-15 V) whice the power toss is lesser.