METHOD AND ASSEMBLY FOR DETERMINING ROTATIONAL SPE

专利名称：METHOD AND ASSEMBLY FOR

DETERMINING ROTATIONAL SPEED WITHVARIABLE SWITCHING HYSTERESIS

发明人：BLOCK, RUEDIGER,ANDRIOT,

CHRISTELLE,RETTIG, RASMUS,WALTER,KLAUS

申请号：EP03720222.3申请日：20030320公开号：EP1508049A1公开日：20050223

摘要：The invention relates to a method for detecting the motion, especially speed, ofan element relative to a sensor assembly, during which switching signals (1) are evaluatedaccording to a pulse generator that is moved past the sensor, and a switching hysteresis(H) is adapted during the evaluation according to the values of the switching signal (1). Inthe event a signal frequency is less than a predetermined threshold frequency (flimit), arelatively large hysteresis (Hyst0) is set and in the event a signal frequency exceeds thethreshold frequency (flimit), a reduced hysteresis (H1) is set. This makes it possible, whenat a standstill and at a low speed, to obtain a high immunity from vibrations and, at a highspeed, to obtain a reliable detection of all pulses themselves with a suddenly enlargedair gap.

申请人：ROBERT BOSCH GMBH

地址：Postfach 30 02 20 70422 Stuttgart DE

国籍：DE

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