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公开(公告)号：US20050241369A1
公开(公告)日：2005-11-03
申请号：US11106546
申请日：2005-04-15
CPC分类号： G01L23/225
摘要： The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the signal levels in the frequency bands is minimum computed, and the mean value is detected as a background level. A knock characteristic parameter, which represents the characteristics of knock, is computed based on the extracted signal levels in the frequency bands. The knock characteristic parameter is compared with the background level to obtain a knock intensity. If the knock intensity is equal to or greater than a knock determination value, it is determined that knock that exceeds a permissible level is occurring. If the knock intensity is less than the knock determination value, it is determined that knock that exceeds the permissible level is not occurring. This configuration permits the background level of the output of the knock sensors to be accurately detected without being influenced by knock or noise.
摘要翻译： 对于多个频带中的每一个，在滤波处理部分提取由爆震传感器输出的振动波形信号的信号电平。 在频带中的信号电平的变化被计算的时间点的频带中的信号电平的平均值被计算，并且平均值被检测为背景电平。 基于在频带中提取的信号电平来计算表示爆震特性的爆震特征参数。 将敲击特征参数与背景水平进行比较以获得爆震强度。 如果敲击强度等于或大于爆震判定值，则确定发生超过允许水平的爆震。 如果爆震强度小于爆震判定值，则确定没有发生超过允许水平的爆震。 该配置允许在不受敲击或噪声影响的情况下精确地检测爆震传感器的输出的背景水平。
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公开(公告)号：US07043353B2
公开(公告)日：2006-05-09
申请号：US11106581
申请日：2005-04-15
IPC分类号： G01L23/22
CPC分类号： G01L23/225
摘要： A plurality of variables representing the characteristics of a knock is obtained from an output signal of a sensor. The variables include a peak value of the knock frequency component in the output signal of the sensor and a waveform correlation coefficient representing the correlation between the waveform of the output signal and an ideal knock waveform, which is the waveform specific to a knock. The peak value and the waveform correlation coefficient are normalized, and a detection distribution is created using the obtained normalized data values. A correlation coefficient for knock determination representing the correlation between the detection distribution and an ideal knock distribution is calculated. The correlation coefficient for knock determination is compared with a predetermined knock determination threshold value, and the knock determination threshold value is corrected in accordance with the comparison result. As a result, the accuracy and the reliability of knock determination are improved.
摘要翻译： 从传感器的输出信号获得表示爆震特性的多个变量。 这些变量包括传感器的输出信号中的爆震频率分量的峰值和表示输出信号的波形与理想爆震波形之间的相关性的波形相关系数，其是敲击特有的波形。 将峰值和波形相关系数归一化，并使用所获得的归一化数据值创建检测分布。 计算表示检测分布与理想爆震分布之间的相关性的爆震确定的相关系数。 将爆震确定的相关系数与预定的爆震判定阈值进行比较，并根据比较结果校正爆震判定阈值。 结果，提高了敲击确定的精度和可靠性。
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公开(公告)号：US07347081B2
公开(公告)日：2008-03-25
申请号：US11106546
申请日：2005-04-15
IPC分类号： G01L23/22
CPC分类号： G01L23/225
摘要： The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the signal levels in the frequency bands is minimum computed, and the mean value is detected as a background level. A knock characteristic parameter, which represents the characteristics of knock, is computed based on the extracted signal levels in the frequency bands. The knock characteristic parameter is compared with the background level to obtain a knock intensity. If the knock intensity is equal to or greater than a knock determination value, it is determined that knock that exceeds a permissible level is occurring. If the knock intensity is less than the knock determination value, it is determined that knock that exceeds the permissible level is not occurring. This configuration permits the background level of the output of the knock sensors to be accurately detected without being influenced by knock or noise.
摘要翻译： 对于多个频带中的每一个，在滤波处理部分提取由爆震传感器输出的振动波形信号的信号电平。 在频带中的信号电平的变化被计算的时间点的频带中的信号电平的平均值被计算，并且平均值被检测为背景电平。 基于在频带中提取的信号电平来计算表示爆震特性的爆震特征参数。 将敲击特征参数与背景水平进行比较以获得爆震强度。 如果敲击强度等于或大于爆震判定值，则确定发生超过允许水平的爆震。 如果爆震强度小于爆震判定值，则确定没有发生超过允许水平的爆震。 该配置允许在不受敲击或噪声影响的情况下精确地检测爆震传感器的输出的背景水平。
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公开(公告)号：US07054735B2
公开(公告)日：2006-05-30
申请号：US11106568
申请日：2005-04-15
CPC分类号： F02D35/027 , G01L23/225
摘要： An ECU obtains two data values (a peak value and a waveform correlation coefficient) that show the characteristics of a knock from the output of a knock sensor. The ECO approximately obtains the mean of each data value by smoothing each data value, and approximately obtains a variance by smoothing the squared deviation between the data values before and after the smoothing process. The ECU then computes the square root of the variance to approximately obtain a standard deviation. The ECU normalizes each data value using the mean and the standard deviation, obtains a distribution of the normalized two data values, and calculates a correlation coefficient that shows the correlation between the obtained distribution and an ideal knock distribution. Based on the correlation coefficient, the ECU corrects a knock determination threshold value. Therefore, the mean and the standard deviation of the data values are computed with a small RAM capacity.
摘要翻译： ECU从爆震传感器的输出中获得表示敲击特性的两个数据值（峰值和波形相关系数）。 ECO通过平滑每个数据值大致获得每个数据值的平均值，并且通过平滑平滑处理之前和之后的数据值之间的平方偏差近似地获得方差。 ECU然后计算方差的平方根，大致获得标准偏差。 ECU使用平均值和标准偏差对每个数据值进行归一化，获得归一化的两个数据值的分布，并计算显示所获得的分布与理想的爆震分布之间的相关性的相关系数。 基于相关系数，ECU校正爆震判定阈值。 因此，以小的RAM容量计算数据值的平均值和标准偏差。
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公开(公告)号：US20050234632A1
公开(公告)日：2005-10-20
申请号：US11106568
申请日：2005-04-15
CPC分类号： F02D35/027 , G01L23/225
摘要： An ECU obtains two data values (a peak value and a waveform correlation coefficient) that show the characteristics of a knock from the output of a knock sensor. The ECO approximately obtains the mean of each data value by smoothing each data value, and approximately obtains a variance by smoothing the squared deviation between the data values before and after the smoothing process. The ECU then computes the square root of the variance to approximately obtain a standard deviation. The ECU normalizes each data value using the mean and the standard deviation, obtains a distribution of the normalized two data values, and calculates a correlation coefficient that shows the correlation between the obtained distribution and an ideal knock distribution. Based on the correlation coefficient, the ECU corrects a knock determination threshold value. Therefore, the mean and the standard deviation of the data values are computed with a small RAM capacity.
摘要翻译： ECU从爆震传感器的输出中获得表示敲击特性的两个数据值（峰值和波形相关系数）。 ECO通过平滑每个数据值大致获得每个数据值的平均值，并且通过平滑平滑处理之前和之后的数据值之间的平方偏差近似地获得方差。 ECU然后计算方差的平方根，大致获得标准偏差。 ECU使用平均值和标准偏差对每个数据值进行归一化，获得归一化的两个数据值的分布，并计算显示所获得的分布与理想的爆震分布之间的相关性的相关系数。 基于相关系数，ECU校正爆震判定阈值。 因此，以小的RAM容量计算数据值的平均值和标准偏差。
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公开(公告)号：US20050234633A1
公开(公告)日：2005-10-20
申请号：US11106581
申请日：2005-04-15
CPC分类号： G01L23/225
摘要： A plurality of variables representing the characteristics of a knock is obtained from an output signal of a sensor. The variables include a peak value of the knock frequency component in the output signal of the sensor and a waveform correlation coefficient representing the correlation between the waveform of the output signal and an ideal knock waveform, which is the waveform specific to a knock. The peak value and the waveform correlation coefficient are normalized, and a detection distribution is created using the obtained normalized data values. A correlation coefficient for knock determination representing the correlation between the detection distribution and an ideal knock distribution is calculated. The correlation coefficient for knock determination is compared with a predetermined knock determination threshold value, and the knock determination threshold value is corrected in accordance with the comparison result. As a result, the accuracy and the reliability of knock determination are improved.
摘要翻译： 从传感器的输出信号获得表示爆震特性的多个变量。 这些变量包括传感器的输出信号中的爆震频率分量的峰值和表示输出信号的波形与理想爆震波形之间的相关性的波形相关系数，其是敲击特有的波形。 将峰值和波形相关系数归一化，并使用所获得的归一化数据值创建检测分布。 计算表示检测分布与理想爆震分布之间的相关性的爆震确定的相关系数。 将爆震确定的相关系数与预定的爆震判定阈值进行比较，并根据比较结果校正爆震判定阈值。 结果，提高了敲击确定的精度和可靠性。
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公开(公告)号：US07251556B2
公开(公告)日：2007-07-31
申请号：US11312735
申请日：2005-12-21
申请人： Rihito Kaneko , Kenji Kasashima , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuichi Takemura
发明人： Rihito Kaneko , Kenji Kasashima , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuichi Takemura
CPC分类号： G01L23/225
摘要： An engine ECU executes a program including a step of calculating coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model stored in advance at a plurality of timings, a step of calculating a knock intensity N as based on a largest coefficient of correlation K among the calculated coefficient of correlation Ks, a step of determining that the engine knocks if knock intensity N is larger than a predetermined reference value (YES at S108), and a step of determining that the engine does not knock if knock intensity N is not larger than a predetermined reference value (NO at S108).
摘要翻译： 发动机ECU执行程序，该程序包括通过将发动机的振动波形与预先存储的多个爆震波形模型进行比较来计算与振动波形和爆震波形模型之间的偏差相关的值的相关系数K的步骤 定时，计算相关系数Ks中基于最大相关系数K的爆震强度N的步骤，如果爆震强度N大于预定参考值，则确定发动机敲击的步骤（在S处为是 108），以及如果爆震强度N不大于预定参考值（步骤S108为否），则确定发动机不会敲击的步骤。
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公开(公告)号：US20060136117A1
公开(公告)日：2006-06-22
申请号：US11312735
申请日：2005-12-21
申请人： Rihito Kaneko , Kenji Kasashima , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuichi Takemura
发明人： Rihito Kaneko , Kenji Kasashima , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuichi Takemura
IPC分类号： G01L23/22
CPC分类号： G01L23/225
摘要： An engine ECU executes a program including a step of calculating coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model stored in advance at a plurality of timings, a step of calculating a knock intensity N as based on a largest coefficient of correlation K among the calculated coefficient of correlation Ks, a step of determining that the engine knocks if knock intensity N is larger than a predetermined reference value (YES at S108), and a step of determining that the engine does not knock if knock intensity N is not larger than a predetermined reference value (NO at S108).
摘要翻译： 发动机ECU执行程序，该程序包括通过将发动机的振动波形与预先存储的多个爆震波形模型进行比较来计算与振动波形和爆震波形模型之间的偏差相关的值的相关系数K的步骤 定时，计算相关系数Ks中基于最大相关系数K的爆震强度N的步骤，如果爆震强度N大于预定参考值，则确定发动机敲击的步骤（在S处为是 108），以及如果爆震强度N不大于预定参考值（步骤S108为否），则确定发动机不会敲击的步骤。
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9.发明授权Internal combustion engine knock determination device and ignition control system including the same 有权内燃机爆震判定装置和点火控制系统包括相同的公开(公告)号：US07263430B2
公开(公告)日：2007-08-28
申请号：US11108809
申请日：2005-04-19
申请人： Kenji Kasashima , Rihito Kaneko , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuuichi Takemura
发明人： Kenji Kasashima , Rihito Kaneko , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuuichi Takemura
CPC分类号： G01L23/225 , F02P5/152 , F02P5/1521 , Y02T10/46
摘要： An engine ECU executes a program including the steps of: detecting a waveform of vibration of an engine at a predetermined knock detection gate; determining whether a detected vibration's waveform and a knock waveform model stored in memory match within a predetermined range; if the model and the detected vibration's waveform match within the predetermined range, determining that the engine knocks; and if the model and the detected vibration's waveform do not match within the predetermined range, then determining that the engine does not knock.
摘要翻译： 发动机ECU执行程序，包括以下步骤：在预定的爆震检测门处检测发动机的振动波形; 确定存储在存储器中的检测到的振动波形和爆震波形模型是否在预定范围内匹配; 如果模型和检测到的振动波形在预定范围内匹配，则确定发动机爆震; 并且如果模型和检测到的振动波形在预定范围内不匹配，则确定发动机不会敲击。
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10.发明申请Internal combustion engine knock determination device and ignition control system including the same 有权内燃机爆震判定装置和点火控制系统包括相同的公开(公告)号：US20050251320A1
公开(公告)日：2005-11-10
申请号：US11108809
申请日：2005-04-19
申请人： Kenji Kasashima , Rihito Kaneko , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuuichi Takemura
发明人： Kenji Kasashima , Rihito Kaneko , Kenji Senda , Shigeru Kamio , Masaomi Inoue , Yuuichi Takemura
CPC分类号： G01L23/225 , F02P5/152 , F02P5/1521 , Y02T10/46
摘要： An engine ECU executes a program including the steps of: detecting a waveform of vibration of an engine at a predetermined knock detection gate; determining whether a detected vibration's waveform and a knock waveform model stored in memory match within a predetermined range; if the model and the detected vibration's waveform match within the predetermined range, determining that the engine knocks; and if the model and the detected vibration's waveform do not match within the predetermined range, then determining that the engine does not knock.
摘要翻译： 发动机ECU执行程序，包括以下步骤：在预定的爆震检测门处检测发动机的振动波形; 确定存储在存储器中的检测到的振动波形和爆震波形模型是否在预定范围内匹配; 如果模型和检测到的振动波形在预定范围内匹配，则确定发动机爆震; 并且如果模型和检测到的振动波形在预定范围内不匹配，则确定发动机不会敲击。
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