Magnetic sensors are ideal for all kinds of contactless position registration, e.g. distance, speed, angle, rotational speed and sense of rotation. They work even under adverse and dirty environmental conditions. These basic advantages have resulted in the widespread use of all kinds of magnetic sensors in contactless position detection. The magnetic sensors based on the giant magnetoresistance (GMR) effect developed for position detection are now finding their way into industrial and automotive applications. They overcome a weakness in conventional magnetoresistors and Hall sensors, because they are less sensitive to air gap deviations apparent in many applications. This paper presents the basic concepts of GMR sensors for contactless position detection. The advantages of the sensor and relevant examples for industrial and automotive applications are discussed.
GMR sensors for contactless position detection (and automotive application)
2001
5 Seiten, 6 Quellen
Conference paper
English
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