| 摘要 |
A position sensor comprising a primary winding ( 26 ) for generating a magnetic flux, a first secondary winding ( 24.1 ) the number of turns of which increases in one direction, a second secondary winding ( 24.2 ) the number of turns of which increases in the opposite direction to that of the first secondary winding. Both secondary windings ( 24.1, 24.2 ) are subjected to the magnetic flux generated by the primary winding ( 26 ) whereby voltages are induced in the secondary windings. The sensor further comprises an element movable with respect to the secondary windings. The element is of a magnetic or conductive material and distorts, in its vicinity, the magnetic flux generated by the primary winding ( 26 ). By providing third and fourth secondary windings at right angles to the first and secondary windings it is possible to detect position in two dimensions. |
