Position sensor

A position sensor is a sensor that detects an object's position. A position sensor may indicate the absolute position of the object (its location) or its relative position (displacement) in terms of linear travel, rotational angle or three-dimensional space. Common types of position sensors include the following: * Capacitive displacement sensor * Eddy-current sensor * Hall-effect sensor * Inductive sensor * Laser Doppler vibrometer (optical) * Linear variable differential transformer (LVDT) * Photodiode array * Piezo-electric transducer * Position encoders: ** Absolute encoder ** Incremental encoder ** Linear encoder ** Rotary encoder * Potentiometer * Proximity sensor (optical) * String potentiometer (also known as a string encoder or cable position transducer) * Ultrasonic sensor

A position sensor is a sensor that detects an object's position. A position sensor may indicate the absolute position of the object (its location) or its relative position (displacement) in terms of linear travel, rotational angle or three-dimensional space. Common types of position sensors include the following: Capacitive displacement sensor Eddy-current sensor Hall-effect sensor Inductive sensor Laser Doppler vibrometer (optical) Linear variable differential transformer (LVDT) Photodiode array Piezo-electric transducer Position encoders: Absolute encoder Incremental encoder Linear encoder Rotary encoder Potentiometer Proximity sensor (optical) String potentiometer (also known as a string encoder or cable position transducer) Ultrasonic sensor ==See also== List of length, distance, or range measuring devices Positioning system == Literature== David S. Nyce: Linear Position Sensors: Theory and Application, New Jersey, John Wiley & Sons Inc. (2004)

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