To detect the location and speed of high-speed maglev (magnetically levitated) vehicles, a location and speed detecting scheme was proposed.
为实现高速磁浮列车位置和速度检测，提出一个检测方案。
This system USES photoelectric coder as speed detecting sensor, USES PID digital controller as control method, USES PWM signal as control output to regulate speed.
该系统采用光电编码器作为速度检测传感器，控制方式采用PID数字控制，控制输出采用PWM数字信号至驱动电路对电机调速。
Because of requiring no speed detecting devices, this method is effective, simple and practical conception for the electrical parameter measurement of sensorless vector control system.
该方法不需要速度检测元件，从而为无速度传感器矢量控制系统的电气参数测试提供了一种有效、可行的方案。
Detecting speed, detecting distance and detecting Angle are the basic functions for radar.
测速、测距、测角是雷达最基本的功能。
Detecting speed, detecting distance and detecting Angle are the basic functions for radar.
测速、测距、测角是雷达最基本的功能。
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