What Is a Magnetic Rotary Encoder?
A magnetic rotary encoder is a machine designed to read rotational angles based on changes in the magnetic field.
It consists of a disk made of magnetic material and a sensor that reads the magnetic field. The measurement of the rotation angle is achieved by reading the changes in the magnetic field produced by the disk, which has magnetized and demagnetized regions. In many cases, a hall effect sensor utilizing the voltage changes resulting from the magnetic field’s action is used as the sensor.
Magnetic rotary encoders are frequently used in conjunction with motors and contribute to tasks such as rotational speed control. Due to the mechanism involving magnetic fields, they exhibit high environmental resistance, making them suitable for use in environments with dust, debris, moisture, oil, and other contaminants. Therefore, they are widely adopted in industrial machinery where durability and environmental resistance are essential.