发明授权
- 专利标题： Method and device for the robust and efficient determination of the rotational direction and/or rotational speed of a wheel or a shaft
- 专利标题（中）： 用于鲁棒且有效地确定车轮或轴的旋转方向和/或转速的方法和装置
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申请号： US12674529申请日： 2008-09-19
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公开(公告)号： US08229697B2公开(公告)日： 2012-07-24
- 发明人: Axel Wenzler
- 申请人： Axel Wenzler
- 申请人地址： DE Stuttgart
- 专利权人： Robert Bosch GmbH
- 当前专利权人： Robert Bosch GmbH
- 当前专利权人地址： DE Stuttgart
- 代理机构： Kenyon & Kenyon LLP
- 优先权： DE102007046308 20070927
- 国际申请： PCT/EP2008/062537 WO 20080919
- 国际公布： WO2009/043739 WO 20090409
- 主分类号： G06F15/00
- IPC分类号： G06F15/00 ; G01P3/00
摘要：
A method and a device are described for determining the rotational direction and/or rotational speed of a rotatable body on the basis of a sine signal and cosine signal, which is assignable to the rotational direction and/or rotational speed of the rotatable body and are output by a sensor, having at least one of the following steps: recording a sine signal and cosine signal, which is assignable to the rotational direction and/or rotational speed, at a point in time; determining a phase value from the sine signal and cosine signal; recording sine signals and cosine signals, which is assignable to the rotational direction and/or rotational speed, at points in time; determining phase values from the corresponding sine signals and cosine signals; calculating phase differences from the phase values and the phase value; and determining the rotational direction and/or rotational speed from the phase differences on the basis of a Vernier method.
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