Did you know that a rotary encoder is a device that encodes and converts signals or data into a signal format that can be used for communication, transmission, and storage? A rotary encoder emits pulse signals when it rotates, and based on these pulse signals, you can define distance, displacement, angle, speed, and so on.
Rotary encoders convert angular or linear displacement into electrical signals; the former is called a code disk, and the latter a code scale. Based on the readout method, rotary encoders can be divided into two types: contact and non-contact.
Contact encoders use brush output, where a brush contacts a conductive or insulating area to indicate whether the code state is "1 " or " 0 ". Non-contact encoders use photosensitive or magnetic sensitive elements. When using photosensitive elements, the light-transmitting and opaque areas indicate whether the code state is "1 " or "0 ". The acquired physical signal is converted into a machine-readable electrical signal through binary encoding of "1 " and " 0 " for communication, transmission and storage.
What is the function of a rotary encoder ?
Rotary encoders are actually used for speed , position , and angle detection and feedback . For example :
Spindle rotary encoder: Feeds back the actual spindle speed and is mainly used in thread machining.
The rotary encoder on the motor is a feedback unit used to check how many pulses the motor has executed, thereby achieving precise positioning.
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