Speed ​​sensor is a sensor measuring the speed of the object

Speed ​​sensor is to measure the speed of an object 's sensor, which is very useful in the field of robotics , incremental displacement per unit time is speed . Including line speed and angular speed , corresponding to the wire speed sensor and an angular velocity sensor , we are collectively referred to as the speed sensor. Digital speed sensor performance are: ( 1 ) number of pulses and resolution. Digital speed sensor output is a pulse signal , the number of output pulses per revolution Shaft Position Sensor resolution. ( 2 ) frequency modulation. Constant when the sensor is rotated, the frequency modulation is offset relative to the center frequency swing . ( 3 ) frequency response. Sensor output pulses are frequency dependent , above a certain frequency response , the sensor output pulse waveform deterioration , the error is too large, the sensor malfunction . Typically , the maximum frequency response of Engine Water Temperature Sensor is large, can meet the requirements. ( 4 ) the moment of inertia . Moment of inertia of Coolant Temperature Sensor dynamic characteristics of the system have a greater impact, and starting the drive motor directly affects the output of the sensor , therefore , the rotational inertia of the sensor should meet the dynamic requirements of the drive system .