What is the role of the encoder?！

Encoder for the sensor (Sensor) class, mainly used to detect the mechanical movement of the speed, position, angle, distance or count, in addition to the application of industrial machinery, many of the motor control servo motor, BLDC servo motor Need to be equipped with an encoder for the motor controller as commutation, speed and location of the detection of a wide range of applications. According to the detection principle, the encoder can be divided into optical, magnetic, inductive and capacitive. According to its scale method and signal output form, divided into incremental encoder and absolute encoder. Photoelectric encoder is the use of grating diffraction principle to achieve displacement - digital transformation, from the 50's began to use in machine tools and computing equipment, because of its simple structure, high precision, long life, etc., at home and abroad by the attention and promotion, Positioning, speed, length, acceleration, vibration and so on has been widely used

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