公开(公告)号：US09500465B2

公开(公告)日：2016-11-22

申请号：US13976566

申请日：2011-10-31

申请人： Eduard Rolew ,  Verena Schmidt ,  Bernhard Opitz

发明人： Eduard Rolew ,  Verena Schmidt ,  Bernhard Opitz

IPC分类号： G01B7/14 ,  G01D5/14

CPC分类号： G01B7/14 ,  G01D5/145

摘要： A method for determining a recognition threshold for recognizing the presence of a tooth or a tooth gap of a position sensor in front of a sensor is presented. The method includes a step of reading in a sensor signal which represents a variation over time of a measured magnetic field when the teeth and the tooth gaps of the position sensor are passed by the sensor. In addition, the method includes a step of ascertaining from the sensor signal a first value based on a minimum value of the sensor signal and a first value based on a maximum value of the sensor signal within a predefined time interval. The method also includes a step of computing a differential absolute value which represents a predetermined percentage of a difference between the value based on the at least one maximum value and a value based on the at least one minimum value of the sensor signal. Lastly, the method includes a step of determining the recognition threshold, so that the recognition threshold represents a value that corresponds to a result of adding the differential absolute value to the first value based on the minimum value of the sensor signal.

摘要翻译： 提出了一种用于确定用于识别在传感器前面的位置传感器的齿或齿隙的存在的识别阈值的方法。 该方法包括读取传感器信号的步骤，该传感器信号表示当传感器通过位置传感器的齿和齿隙时测量的磁场随时间的变化。 此外，该方法包括从传感器信号中确定基于传感器信号的最小值的第一值和基于预定时间间隔内的传感器信号的最大值的第一值的步骤。 该方法还包括计算差分绝对值的步骤，该差分绝对值表示基于至少一个最大值的值与基于传感器信号的至少一个最小值的值之间的差的预定百分比。 最后，该方法包括确定识别阈值的步骤，使得识别阈值表示对应于基于传感器信号的最小值将差分绝对值与第一值相加的结果的值。

公开(公告)号：US20100107747A1

公开(公告)日：2010-05-06

申请号：US12521132

申请日：2007-11-09

申请人： Eduard Rolew ,  Uwe Kassner

发明人： Eduard Rolew ,  Uwe Kassner

IPC分类号： G01M15/00

CPC分类号： G01P13/045 ,  F02D41/009 ,  G01D5/24476

摘要： A method for incrementally ascertaining a rotation angle of a shaft, in particular of a crankshaft of an internal combustion engine, the shaft being connected to a sensor wheel having teeth and tooth gaps, and at least one sensor being associated with the sensor wheel, the sensor generating a square-wave signal as an output signal which may assume a first value or a second value, and a signal edge being associated with a tooth edge, and the position in time of a counteredge with respect to the edge encoding a direction of rotation, an assignment of a direction of rotation reversal point to a tooth of the sensor wheel or a tooth gap of the sensor wheel being encoded by the position in time of the counteredge with respect to the edge, the rotation angle being ascertained by adding an increment for each signal edge to a counter, after a direction of rotation reversal while a tooth passes the sensor, a half-increment, having a sign of the direction of rotation after the direction of rotation reversal, being incremented once and in the event of a direction of rotation reversal while a tooth gap passes the sensor, a half-increment, having a sign of the direction of rotation prior to the direction of rotation reversal, being incremented once.

摘要翻译： 一种用于逐渐确定轴的旋转角度的方法，特别是内燃机的曲轴，所述轴连接到具有齿和齿隙的传感器轮，以及与传感器轮相关联的至少一个传感器， 生成方波信号作为可以呈现第一值或第二值的输出信号，以及与齿缘相关联的信号边缘，以及相对于编码方向的边缘的偏移时间的位置 旋转方向，旋转方向的转动指向传感器轮的齿或传感器轮的齿隙，由相对于边缘的反转时间的位置进行编码，旋转角度通过以下方式确定： 在齿通过传感器的旋转方向反转之后，将每个信号边缘的增量递增到计数器，具有旋转方向后的旋转方向的符号的半增量 在反转时，增加一次，并且当齿隙通过传感器时在旋转方向反转的情况下，在旋转方向反转之前具有旋转方向的符号的半增量增加一次。

公开(公告)号：US20140019084A1

公开(公告)日：2014-01-16

申请号：US13976566

申请日：2011-10-31

申请人： Eduard Rolew ,  Verena Schmidt ,  Bernhard Opitz

发明人： Eduard Rolew ,  Verena Schmidt ,  Bernhard Opitz

IPC分类号： G01B7/14

CPC分类号： G01B7/14 ,  G01D5/145

摘要： A method for determining a recognition threshold for recognizing the presence of a tooth or a tooth gap of a position sensor in front of a sensor is presented. The method includes a step of reading in a sensor signal which represents a variation over time of a measured magnetic field when the teeth and the tooth gaps of the position sensor are passed by the sensor. In addition, the method includes a step of ascertaining from the sensor signal a first value based on a minimum value of the sensor signal and a first value based on a maximum value of the sensor signal within a predefined time interval. The method also includes a step of computing a differential absolute value which represents a predetermined percentage of a difference between the value based on the at least one maximum value and a value based on the at least one minimum value of the sensor signal. Lastly, the method includes a step of determining the recognition threshold, so that the recognition threshold represents a value that corresponds to a result of adding the differential absolute value to the first value based on the minimum value of the sensor signal.

摘要翻译： 提出了一种用于确定用于识别在传感器前面的位置传感器的齿或齿隙的存在的识别阈值的方法。 该方法包括读取传感器信号的步骤，该传感器信号表示当传感器通过位置传感器的齿和齿隙时测量的磁场随时间的变化。 此外，该方法包括从传感器信号中确定基于传感器信号的最小值的第一值和基于预定时间间隔内的传感器信号的最大值的第一值的步骤。 该方法还包括计算差分绝对值的步骤，该差分绝对值表示基于至少一个最大值的值与基于传感器信号的至少一个最小值的值之间的差的预定百分比。 最后，该方法包括确定识别阈值的步骤，使得识别阈值表示对应于基于传感器信号的最小值将差分绝对值与第一值相加的结果的值。

公开(公告)号：US08250910B2

公开(公告)日：2012-08-28

申请号：US12521132

申请日：2007-11-09

申请人： Eduard Rolew ,  Uwe Kassner

发明人： Eduard Rolew ,  Uwe Kassner

IPC分类号： G01M15/00

CPC分类号： G01P13/045 ,  F02D41/009 ,  G01D5/24476

摘要： A method for incrementally ascertaining a rotation angle of a shaft, in particular of a crankshaft of an internal combustion engine, the shaft being connected to a sensor wheel having teeth and tooth gaps, and at least one sensor being associated with the sensor wheel, the sensor generating a square-wave signal as an output signal which may assume a first value or a second value, and a signal edge being associated with a tooth edge, and the position in time of a counteredge with respect to the edge encoding a direction of rotation, an assignment of a direction of rotation reversal point to a tooth of the sensor wheel or a tooth gap of the sensor wheel being encoded by the position in time of the counteredge with respect to the edge, the rotation angle being ascertained by adding an increment for each signal edge to a counter, after a direction of rotation reversal while a tooth passes the sensor, a half-increment, having a sign of the direction of rotation after the direction of rotation reversal, being incremented once and in the event of a direction of rotation reversal while a tooth gap passes the sensor, a half-increment, having a sign of the direction of rotation prior to the direction of rotation reversal, being incremented once.

摘要翻译： 一种用于逐渐确定轴的旋转角度的方法，特别是内燃机的曲轴，所述轴连接到具有齿和齿隙的传感器轮，以及与传感器轮相关联的至少一个传感器， 生成方波信号作为可以呈现第一值或第二值的输出信号，以及与齿缘相关联的信号边缘，以及相对于编码方向的边缘的偏移时间的位置 旋转方向，旋转方向的转动指向传感器轮的齿或传感器轮的齿隙，由相对于边缘的反转时间的位置进行编码，旋转角度通过以下方式确定： 在齿通过传感器的旋转方向反转之后，将每个信号边缘的增量递增到计数器，具有旋转方向后的旋转方向的符号的半增量 在反转时，增加一次，并且当齿隙通过传感器时在旋转方向反转的情况下，在旋转方向反转之前具有旋转方向的符号的半增量增加一次。