What is a Linear encoder?

A device that uses a sensor to read the linear position of a moving device. On the other hand, the type that detects the rotation angle is called a rotary encoder. There are two types of encoders: the incremental type that outputs the movement distance according to the movement amount, and the absolute type that outputs the absolute position. The absolute type can know the current position when the power is turned on again, regardless of the state of the device, but it has a complicated structure and is expensive in comparison.

Application of Linear encoder

It is used for equipment that requires multiple high-precision positioning, even among industrial equipment that requires positioning using motors, hydraulic pressure, and pneumatic pressure. Rotary encoders are often used for motors, etc., but the stop position of the motor does not always match the stop position of the device due to backlash, twisting and deflection of each part in the process of converting rotary motion into linear motion. not. Linear encoders that can directly know the stop position of the equipment are used for equipment that cannot tolerate these errors.

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