公开(公告)号：US07647209B2

公开(公告)日：2010-01-12

申请号：US10594983

申请日：2006-02-07

申请人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

发明人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

IPC分类号： G06F3/00

CPC分类号： G10L21/0272 ,  G06K9/6245 ,  G10L15/20 ,  G10L2021/02165

摘要： A frequency domain transforming section transforms mixed signals observed by multiple sensors into mixed signals in the frequency domain, a complex vector generating section generates a complex vector by using the frequency-domain mixed signals, a normalizing section generates a normalized vector excluding frequency dependence of the complex vector, and a clustering section clusters the normalized vectors to generate clusters. Then, a separated signal generating section generates separated signals in the frequency domain by using information about the clusters and a time domain transforming section transforms the separated signals in the frequency domain into separated signals in the time domain.

摘要翻译： 频域变换部将多个传感器观测到的混合信号变换为频域的混合信号，复矢量生成部通过使用频域混合信号生成复矢量，归一化部生成除了频率依赖性的归一化矢量 复数向量，聚类部分聚类归一化向量以生成聚类。 然后，分离信号生成部通过使用关于簇的信息来生成频域的分离信号，并且时域变换部将频域中的分离信号变换为时域中的分离信号。

公开(公告)号：US20050203981A1

公开(公告)日：2005-09-15

申请号：US10508708

申请日：2004-03-03

申请人： Hiroshi Sawada ,  Ryo Mukai ,  Shoko Araki ,  Shoji Makino

发明人： Hiroshi Sawada ,  Ryo Mukai ,  Shoko Araki ,  Shoji Makino

IPC分类号： G01S3/46 ,  G01S3/74 ,  G01S3/80 ,  G01S3/808 ,  G06F17/10

CPC分类号： G01S3/46 ,  G01S3/74 ,  G01S3/8006 ,  G01S3/808

摘要： Observed signals x1(t) to xj(t) from a plurality of sensors disposed in two dimensions are subject to a short-time Fourier transform, from which signals X1(ω1) to X1(ωN), . . . XJ(ω1) to XJ(ωN) are derived. Using the independent component analysis process, separation matrices W(ω1) to W(ωN) are produced. Their inverse matrices H(ω1) to H(ωN) are calculated, and for each ωn (n=1, . . . , N), using a pair of elements from each column of H(ωn), Hji(ωn) and Hj′i(ωn), an angle {circumflex over (θ)}i,jj′(ωn)=cos−1(arg(|Hji(ωn)/Hj′i(ωn))/(ωnc−1∥dj−dj′∥)) is calculated where arg(α) represents an argument of α, c the propagation velocity of a signal, and ∥dj−dj′∥ represents a spacing between sensors i and j′. Columns are permuted so that {circumflex over (θ)}i,jj′(ωn) obtained from each column of H(ω1) to H(ωN) assume an ascending order. For columns which cannot be permuted, the equation ∥qi−dj′∥/∥qi−dj∥=|Hji(ωn)/Hj′i(ωn)|=DRi,jj′(ωn) is solved for qi to calculate Ri,jj′(ωn)=∥DRi,jj′(ωn)·(dj−dj′)/(DR2i,jj′(ωn)−1)|. Columns of H(ωn) is permuted so that Ri,jj′(ωn) assume an ascending order. H(ωn) is used to solve the permutation problem of W(ω).

公开(公告)号：US07039546B2

公开(公告)日：2006-05-02

申请号：US10508708

申请日：2004-03-03

申请人： Hiroshi Sawada ,  Ryo Mukai ,  Shoko Araki ,  Shoji Makino

发明人： Hiroshi Sawada ,  Ryo Mukai ,  Shoko Araki ,  Shoji Makino

IPC分类号： G01C9/00

CPC分类号： G01S3/46 ,  G01S3/74 ,  G01S3/8006 ,  G01S3/808

摘要： Signals from a plurality of sources are observed by a plurality of sensors disposed in two dimensions, and the observed signals are subject to a short-time Fourier transform, from which frequency domain signals are derived. Using the independent component analysis process on the frequency domain signals, separation matrices are produced, and an inverse matrix of each separation matrix is calculated. The direction of each source is calculated based on a ratio of a pair of elements in each column of the inverse matrix.

摘要翻译： 来自多个源的信号由设置在二维上的多个传感器观察，并且所观测的信号经受​​短时傅里叶变换，从其导出频域信号。 对频域信号采用独立分量分析过程，产生分离矩阵，并计算每个分离矩阵的逆矩阵。 每个源的方向基于逆矩阵的每列中的一对元素的比率来计算。

公开(公告)号：US20060058983A1

公开(公告)日：2006-03-16

申请号：US10539609

申请日：2004-09-01

申请人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

发明人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

IPC分类号： G06F15/00 ,  H03F1/26 ,  H04B15/00

CPC分类号： G10L21/0272 ,  G06K9/6245

摘要： This invention achieves high-quality separation of mixed signals in situations where the relationship between the number of signal sources N and the number of sensors M is such that N>M. First, the values of the observed signal observed by M sensors are transformed into frequency domain values, and these frequency domain values are used to calculate the relative values of the observed values between the sensors at each frequency. These relative values are clustered into N clusters, and the representative value of each cluster is calculated. Then, using these representative values, a mask is produced to extract the values of the signals emitted by V (1≦V≦M) signal sources from the frequency-domain signal values, and this mask is used to extract the signal values emitted by V signal sources from these frequency-domain signal values. After that, if V=1 then the limited signal is output directly as a separated signal, while if V≧2 then the separated values are obtained from this limited signal by subjecting it to separation techniques such as ICA.

摘要翻译： 本发明在信号源数目N与传感器数量M之间的关系为N> M的情况下实现混合信号的高质量分离。 首先，由M个传感器观察到的观测信号的值被变换为频域值，并且这些频域值用于计算每个频率下传感器之间的观测值的相对值。 将这些相对值聚类为N个簇，并计算每个簇的代表值。 然后，使用这些代表值，产生掩模以从频域信号值中提取由V（1 <= V <= M）个信号源发射的信号的值，并且该掩码用于提取信号值 由V信号源从这些频域信号值发射。 之后，如果V = 1，则限制信号直接作为分离信号输出，而如果V> = 2，则通过对分离技术（如ICA）进行分离，从该有限信号获得分离值。

公开(公告)号：US07496482B2

公开(公告)日：2009-02-24

申请号：US10539609

申请日：2004-09-01

申请人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

发明人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

IPC分类号： G06F15/00

CPC分类号： G10L21/0272 ,  G06K9/6245

摘要： A method and a device for signal separation. First, values of signals observed by M sensors are transformed into frequency domain values, and these frequency domain values are used to calculate relative values of the observed values between the sensors at each frequency. These relative values are clustered into N clusters, and the representative value of each cluster is calculated. Then, using these representative values, a mask is produced to extract the values of the signals emitted by V (1≦V≦M) signal sources from the frequency-domain signal values, and this mask is applied to the frequency-domain signal values. After that, if V=1 then the limited signal is output directly as a separated signal, while if V≧2 then the separated values are obtained by separating this limited signal with separation techniques such as ICA.

摘要翻译： 一种用于信号分离的方法和装置。 首先，将M个传感器观察到的信号值变换为频域值，并使用这些频域值来计算每个频率下传感器之间的观测值的相对值。 将这些相对值聚类为N个簇，并计算每个簇的代表值。 然后，使用这些代表值，产生掩模，以从频域信号值中提取由V（1 <= V <= M）个信号源发射的信号的值，并将该掩码应用于频域 信号值。 之后，如果V = 1，则限制信号作为分离信号直接输出，而如果V> = 2，则通过用ICA等分离技术分离该限制信号来获得分离的值。

公开(公告)号：US20080215651A1

公开(公告)日：2008-09-04

申请号：US10594983

申请日：2006-02-07

申请人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

发明人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

IPC分类号： G06F17/14

CPC分类号： G10L21/0272 ,  G06K9/6245 ,  G10L15/20 ,  G10L2021/02165

摘要： A frequency domain transforming section 2 transforms mixed signals observed by multiple sensors into mixed signals in the frequency domain, a complex vector generating section 3 generates a complex vector by using the frequency-domain mixed signals, a normalizing section 4 generates a normalized vector excluding frequency dependence of the complex vector, and a clustering section 5 clusters the normalized vectors to generate clusters. Then, a separated signal generating section 6 generates separated signals in the frequency domain by using information about the clusters and a time domain transforming section 7 transforms the separated signals in the frequency domain into separated signals in the time domain.

摘要翻译： 频域变换部2将由多个传感器观测到的混合信号变换为频域的混合信号，复矢量生成部3通过使用频域混合信号生成复矢量，归一化部4生成除频率以外的归一化矢量 复合向量的依赖性，并且聚类部分5聚集归一化向量以生成聚类。 然后，分离信号生成部6通过使用关于簇的信息来生成频域的分离信号，时域变换部7将频域中的分离信号变换为时域中的分离信号。

公开(公告)号：US08806928B2

公开(公告)日：2014-08-19

申请号：US13695372

申请日：2010-04-30

申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Toru Kidokoro ,  Akihiko Itakura

IPC分类号： G01M15/10

CPC分类号： G01M15/10 ,  F01N11/002 ,  F01N2550/02 ,  Y02T10/47

摘要： Provision is made for a catalyst that is arranged in an exhaust passage of an internal combustion engine and has an oxidation function, downstream side temperature detection means that detects the temperature of an exhaust gas at a downstream side from the catalyst, and addition means that adds a reducing agent into the exhaust gas from an upstream side from the catalyst, wherein there are also provided correlation value calculation means that calculates a correlation value which is correlated with an amount of change of the temperature detected by the downstream side temperature detection means when the reducing agent is added by the addition means and when a transient operation of the internal combustion engine is carried out, and determination means that determines a deterioration of the catalyst by making a comparison between the correlation value and a threshold value which indicates the deterioration of the catalyst.

摘要翻译： 设置有布置在内燃机的排气通道中并具有氧化功能的催化剂，下游侧温度检测装置，其检测催化剂下游侧的废气的温度，以及添加装置 还原剂从催化剂的上游侧排入废气中，其中还提供相关值计算装置，其计算与当下游侧温度检测装置检测到的温度的变化量相关的相关值时 通过加法装置添加还原剂，并且当进行内燃机的瞬时运转时，以及通过比较相关值和指示劣化的阈值来确定催化剂的劣化的确定装置 催化剂。

公开(公告)号：US20140003999A1

公开(公告)日：2014-01-02

申请号：US14006250

申请日：2011-03-22

申请人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

发明人： Yoshitaka Nakamura ,  Hirotaka Saito ,  Toru Kidokoro ,  Hiroshi Sawada ,  Kenji Sakurai

IPC分类号： G01N31/10

CPC分类号： G01N31/10 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/03 ,  F01N2560/021 ,  Y02T10/47

摘要： An accurate determination of deterioration of a NOx storage reduction catalyst. A supply device supplies a reducing agent to the NOx catalyst to change an air fuel ratio of an exhaust gas passing through the NOx catalyst, an NH3 detection device detects NH3 in the exhaust gas at the downstream side of the NOx catalyst, a control device adjusts an amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes a predetermined rich air fuel ratio, and a determination device makes a determination that the NOx catalyst has deteriorated, when a detected value of the NH3 detection device becomes equal to or greater than a threshold value, at the time of supplying the reducing agent while adjusting the amount of the reducing agent so that the air fuel ratio of the exhaust gas becomes the predetermined rich air fuel ratio.

摘要翻译： 精确测定NOx储存还原催化剂的劣化。 供给装置向NO x催化剂供给还原剂以改变通过NOx催化剂的废气的空燃比，NH 3检测装置检测NOx催化剂下游侧的废气中的NH 3，控制装置调整 一定量的还原剂使得排气的空燃比成为预定的浓空燃比，并且当NH 3检测装置的检测值变为等于1时，确定装置判定为NOx催化剂已劣化 或大于阈值，同时在调节还原剂的量的同时供给还原剂，使得排气的空燃比成为预定的浓空燃比。

公开(公告)号：US08560208B2

公开(公告)日：2013-10-15

申请号：US13505849

申请日：2009-11-05

申请人： Hiroshi Miyamoto ,  Yasushi Iwazaki ,  Hiroshi Sawada

发明人： Hiroshi Miyamoto ,  Yasushi Iwazaki ,  Hiroshi Sawada

IPC分类号： B60T7/12

CPC分类号： F02D41/0085 ,  F02D41/0065 ,  F02D41/1454 ,  Y02T10/47

摘要： An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, as an “EGR supplying state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt of a detected air-fuel ratio abyfs represented by an output value of an air-fuel ratio sensor when an EGR gas is being supplied, and obtains, as an “EGR stop state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt when an EGR gas supply is being stopped. The determination apparatus obtains an “EGR-causing imbalance determination parameter Pegr” by subtracting the EGR stop state imbalance determination parameter Poff from the EGR supplying state imbalance determination parameter Pon, and determines that an inter-cylinder air-fuel ratio imbalance state has occurred due to the supply of the EGR gas when the parameter Pegr is larger than a threshold Pegrth.

摘要翻译： 根据本发明的气缸内空燃比不平衡判定装置（判定装置），作为“EGR供给状态不平衡判定参数”，获得与检测到的空气 - 燃料比不平衡判定装置的差分值d（abyfs）dt对应的值， 在EGR气体供给时由空燃比传感器的输出值表示的燃料比abyfs，作为“EGR停止状态不平衡判定参数”，获得与差分值d（abyfs）dt对应的值 正在停止EGR气体供应。 确定装置通过从EGR供应状态不平衡确定参数Pon中减去EGR停止状态不平衡确定参数Poff而获得“EGR导致不平衡确定参数Pegr”，并且确定缸间空燃比不平衡状态已经发生 当参数Pegr大于阈值Pegrth时，供应EGR气体。

公开(公告)号：US20130261934A1

公开(公告)日：2013-10-03

申请号：US13871249

申请日：2013-04-26

申请人： Yasushi Iwazaki ,  Hiroshi Miyamoto ,  Fumihiko Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro

发明人： Yasushi Iwazaki ,  Hiroshi Miyamoto ,  Fumihiko Nakamura ,  Hiroshi Sawada ,  Toru Kidokoro

IPC分类号： F02D41/00

CPC分类号： F02D41/00 ,  F02D41/0042 ,  F02D41/0085 ,  F02D41/1454 ,  F02D41/2441 ,  F02D41/2454

摘要： An apparatus for determining an air-fuel ratio imbalance among cylinders based on an output value of an air-fuel ratio sensor, an imbalance determination parameter which becomes larger or smaller as a difference among air-fuel ratios becomes larger, and performs determining an air-fuel ratio imbalance among cylinders based on a result of a comparison between the imbalance determination parameter and a imbalance determination threshold. The determining apparatus calculates a purge correction coefficient which compensates for a change in the air-fuel ratio due to an evaporated fuel gas which is generated in a fuel tank, while the evaporated fuel gas is being introduced into an intake passage, and corrects a fuel injection amount with the purge correction coefficient FPG.

摘要翻译： 一种用于基于空燃比传感器的输出值来确定气缸之间的空燃比不平衡的装置，作为空燃比之差变大或变小的不平衡确定参数变大，并且执行空气 - 基于不平衡确定参数和不平衡确定阈值之间的比较的结果，气缸之间的燃料比不平衡。 确定装置计算净化校正系数，其补偿由于在燃料箱中产生的蒸发燃料气体而引起的空燃比的变化，同时蒸发的燃料气体被引入进气通道中，并且校正燃料 喷射量与净化校正系数FPG。