Benefits of Magnetic Rotary Encoder – Highly accurate and realible position detection

Digital encoder is a sensing device that converts motion to electric signals. An encoder sends feedback signals that can determines speed, count, position or direction. Even if both encoder and potentiometer are both electromechanical devices that can measure position, the biggest difference is that the potentiometer outputs analog signals whereas the encoder provides digital signals.

Generally speaking, an encoder has a longer life and more accurate than a potentiometer.

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