Robert Boschgmbh

Patrick Calandrini

Hans-Juergen Herderich

Andrea Deflorio

Steffen Waldenmeier

Thomas Kitzing

Goetz Eberle

Marcel Spoerl

Olivier Kukawka

A method is provided for producing a magnetic position or path sensor element, the magnetic position or path sensor element having at least one magnetic pathway that extends along a displacement path and that has a plurality of magnetic north-south transitions, as well as at least one magnetic sensor mounted so as to be movable relative to the magnetic pathway. At least one of the magnetic north-south transitions is defined as a critical north-south transition whose position is to be detected with a specified degree of precision. Adjacent to the critical north-south transition are situated magnetic poles having identical polarity. The method provides production reliability by reducing the sensitivity of the magnetic position or path sensor element to positional tolerances.

Method and device for production of a magnetic position or path sensor element

A magnetic transducer configuration may include a permanent magnet element magnetized in its longitudinal direction having a pole transition. The permanent magnet element has a cross section in the pole transition section, which is larger than the cross section of the permanent magnet element in an area outside of the pole transition section. A magnetic position sensor may include a magnetic field sensor array and magnetic transducer configuration. The magnetic field sensor array and the magnetic transducer configuration are situated displaceably in the longitudinal direction in a plane-parallel manner. The magnetic field sensor array has at least one magnetic field sensor lying in a path along which the permanent magnet element moves during displacement of the magnetic transducer configuration.

Magnetic transducer configuration for magnet-based position sensors having improved geometry for more precise position detection

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Ludwigsburg, Germany

Patrick Calandrini