Magnetic Rotary Encoder
Magnetic rotary encoder is usually comprised of a magnet and a magnet-electric conversion element. The magnet is attached to the tip of a shaft. When shaft rotates, direction of the magnetic field is picked up by the magnetic electric conversion element. As the result, the encoder is able to output the position and speed of the shaft
Since the magnetic encoder is non-contact type and excellent in environment resistance, highly accurate and highly reliable position detection is possible.
In general, the magnetic rotary encoders have the following features.
- Because there are few physical restrictions and increase of components, high resolution can be achieved at a small size and low cost.
- It can operate correctly even in a dusty environment.
- Compared to the optical type, it is easy to reduce current consumption because there are few electronic components