A
position sensor is a
sensor that facilitates measurement of mechanical position. A position sensor may indicate absolute position (location) or relative position (displacement), in terms of linear travel, rotational angle, or three-dimensional space. Common types of position sensors include:
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Capacitive displacement sensor
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Eddy-current sensor
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Hall effect sensor
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Inductive sensor
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Laser Doppler vibrometer (optical)
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Linear variable differential transformer (LVDT)
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Photodiode array
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Piezo-electric transducer (piezo-electric)
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Position encoders:
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Potentiometer
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Proximity sensor (optical)
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String potentiometer (also known as string pot., string encoder, cable position transducer)
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Ultrasonic sensor
Literature
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David S. Nyce: Linear Position Sensors: Theory and Application, New Jersey, John Wiley & Sons Inc. (2003)....
