ResourceWhat is a Motor Feedback Sensor?
The main types of motor feedback sensors are Hall sensors, encoders, and resolvers.
Hall sensors are simple, low-cost devices that detect a magnet’s field to determine the position of the motor rotor. They are primarily used for commutation in BLDC motors.
Encoders are the most widely used type of feedback sensor. They use optical or magnetic sensing to convert angular position into a digital signal. Optical encoders offer high resolution for precision applications. They are sensitive to shock and contamination, so magnetic encoders are sometimes used in their place. Encoders are classified as incremental or absolute. Incremental encoders provide relative position feedback, while absolute encoders are available in single-turn and multi-turn versions. Both battery-powered and battery-free absolute encoders are available.
A resolver is an analog feedback sensor that works as a rotary transformer. Its rugged construction makes it suitable for harsh environments.
KOMOTEK uses incremental and absolute optical encoders, incremental and absolute magnetic encoders, and resolvers.
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