| 摘要 |
A non-contacting position sensor ( 20 ) for sensing and determining the position between two relatively-movable members ( 23, 31 ) includes a pair of flux-conductive converging polepieces ( 21, 22 ) mounted on one of the members ( 23 ); a magnetic sensor ( 29 ) mounted on the one member and positioned proximate the convergent polepiece ends, this magnetic sensor being adapted to produce an output signal as a function of the magnetic flux density therein; and a magnet ( 30 ) mounted on the other member ( 31 ) for movement toward and away from the magnetic sensor, this magnet being positioned between the polepieces to define the first air gap between the magnet and one polepiece and a second air gap between the magnet and the other polepiece, the reluctances (RV 1 , RV 2 ) of the first and second air gaps ( 32, 33 , respectively) varying as a function of the position of the magnet relative to the magnetic sensor such that the sensor output signal will be a function of the position of the magnet from the magnetic sensor.
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