Encoders

An absolute sensor is a type of sensor that measures the position or state of an object relative to an absolute reference point. It provides precise information about the object’s position or state without needing to return to a zero point or reference point to start the measurement again. This distinguishes an absolute sensor from an incremental sensor, which requires a reference point or starting position to be set.

One common application is in rotational systems, such as motor and servo system control. These sensors can provide accurate information, for example, about the position or angle of a motor, and this data is retained even after power is cut or the system is restarted.

Absolute sensors are useful in applications where precise and continuous position or angular data is essential, and where returning to a zero point to start measurements would be impractical or impossible.

An incremental pulse sensor is a type of sensor that measures the position or movement of an object relative to a reference point. Unlike absolute sensors, incremental sensors do not provide information about the absolute position; instead, they require an initial reference point, which is defined at startup or periodically.

Incremental sensors typically work by sending pulse signals when the object being measured moves. These pulse signals are used to calculate the distance or angle relative to the original reference point. These sensors are commonly used in industries, robotics, CNC machines, transportation, and many other applications where precise position or movement tracking is essential.