Patent ID: 6232771
Filing Date: 2001-05-15
Classification: G01D

Abstract:
A measuring device for contactless determination of a rotation angle of a rotor (22) relative to a multi-part stator (10; 11,13,14) made from a magnetically conductive material, said measuring device comprising at least one magnet-field-sensitive element (20) and at least one segment of at least one ring magnet arranged in said rotor (22);wherein a first air gap (21) is located between the stator (10; 11, 13, 14) and the rotor (22) and at least one second air gap (12) is formed in the stator (10; 11, 13, 14); said at least one magnet-field-sensitive element (20) is located in the at least one second air gap (12); said stator (10; 11,13,14) comprises a plurality of parts (11, 13, 14); at least one (11,14) of said parts of the stator (10) has a magnetically conductive connection with remaining ones of said parts, and at least one other (13) of said parts has no magnetically conductive connection (18) with remaining ones (11,14) of said parts, so that the ring magnet (22) has a magnetic flux split up so as to produce at least one first partial flux (F1), and so that said at least one first partial flux (F1) flows through the at least one magnet-field-sensitive element (20).