POSITION SENSOR

WIPO Patent Application WO2000065299

A3

The present invention provides a position sensor which is suitable for use in a piston and cylinder assembly. The position sensor includes a movable field modifying member which is operable to vary the inductance of a sensor winding, whereby the position of the field modifying member relative to the sensor winding can be determined by monitoring the inductance of the sensor winding. The position sensor also includes a compensation winding which is arranged to have a common coupling with the field modifying member whereby a signal output from the compensation winding can be used to compensate for variations in the signal level output by the sensor winding caused by, for example, temperature variations of the system.

WO/2010/014604	PNEUMATIC CYLINDER FOR PRECISION SERVO TYPE APPLICATIONS
JP2002323300	CYLINDER UNIT AND MINE SENSOR
JPH0647122	[Name of invention] Switch mounting device for swing actuator

MORRISON EUAN (GB)
LAITENBERGER PETER GEORG (GB)
JONES ROSS PETER (GB)
LEE ROBIN MICHAEL (GB)
WHITE ANDREW JAMES (GB)

PCT/GB2000/001597

March 22, 2001

April 25, 2000

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SCIENT GENERICS LTD (GB)
MORRISON EUAN (GB)
LAITENBERGER PETER GEORG (GB)
JONES ROSS PETER (GB)
LEE ROBIN MICHAEL (GB)
WHITE ANDREW JAMES (GB)

F15B15/28; G01B7/00; G01B7/02; G01D5/20; (IPC1-7): G01B7/00; G01D5/20; F15B15/28

FR2182400A6	1973-12-07
DE2617624A1	1977-11-03
DE4337208A1	1995-05-04
US4783626A	1988-11-08
US4339739A	1982-07-13
GB2021770A	1979-12-05
DE19832854A1	1999-01-28
US5036275A	1991-07-30
US5204621A	1993-04-20
US5642043A	1997-06-24
US4297698A	1981-10-27
DE19726256C1	1998-08-27
DE19545923A1	1996-08-01
DE4220801A1	1994-01-05

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