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1.发明授权
公开(公告)号：US6021767A
公开(公告)日：2000-02-08
申请号：US143535
申请日：1998-08-28
CPC分类号： G05B13/042 , F02D41/1402 , F02D41/2454 , F02D41/2477 , F02D2041/1415 , F02D2041/1418 , F02D2041/143 , F02D2041/1433 , F02D2250/12 , F02D41/1456 , F02D41/2483
摘要： An air-fuel ratio control system for a multi-cylinder engine is provided. An air-fuel ratio sensor is arranged in an exhaust system of the engine for detecting an air-fuel ratio of a mixture supplied to the engine and for generating an output indicative of the air-fuel ratio of the mixture. An adaptive controller determines an amount of fuel to be supplied to the engine with a first predetermined repetition period in a manner such that the output from the air-fuel ratio sensor becomes equal to a desired value. An adaptive parameter-adjusting mechanism adjusts adaptive parameters used by the adaptive controller. In the adaptive parameter-adjusting mechanism, the adaptive parameters are calculated with a second predetermined repetition period longer than the first predetermined repetition period, and output data indicative of results of the calculation is generated. Further, the output data indicative of results of the calculation is smoothed and output data indicative of the smoothed data is generated with a repetition period at least equal to the first predetermined repetition period. The adaptive controller uses the smoothed data as values of the adaptive parameters.
摘要翻译： 提供了一种用于多缸发动机的空燃比控制系统。 在发动机的排气系统中布置有空燃比传感器，用于检测供应到发动机的混合物的空燃比并产生表示混合物的空燃比的输出。 自适应控制器以使得来自空燃比传感器的输出变得等于期望值的方式，以第一预定重复周期来确定要提供给发动机的燃料量。 自适应参数调整机制调整自适应控制器使用的自适应参数。 在自适应参数调整机构中，以比第一预定重复周期长的第二预定重复周期来计算自适应参数，并且生成表示计算结果的输出数据。 此外，表示计算结果的输出数据被平滑，并且以至少等于第一预定重复周期的重复周期生成指示平滑数据的输出数据。 自适应控制器使用平滑数据作为自适应参数的值。
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公开(公告)号：US5983875A
公开(公告)日：1999-11-16
申请号：US139643
申请日：1998-08-25
CPC分类号： G05B13/042 , F02D41/1402 , F02D41/1481 , F02D13/0207 , F02D13/0257 , F02D2041/001 , F02D2041/1415 , F02D2041/1418 , F02D2041/1431 , F02D2200/703 , F02D41/1441 , F02D41/1456
摘要： A control system for a plant includes a sensor for detecting an output from the plant, an adaptive controller for controlling a manipulated variable applied to control of the plant in a manner such that an output from the sensor becomes equal to a desired value, and an adaptive parameter-adjusting device for adjusting adaptive parameters used by the adaptive controller. The adaptive controller is configured in a manner adapted to a predetermined dead time shorter than an actual dead time which the plant and the detection means possess. Sampling timing of an input vector input to the adaptive parameter-adjusting device corresponds to the actual dead time.
摘要翻译： 一种用于设备的控制系统包括用于检测来自所述设备的输出的传感器，用于以使得所述传感器的输出变为等于所需值的方式控制施加于所述设备的控制的操纵变量的自适应控制器，以及 自适应参数调整装置，用于调整自适应控制器所使用的自适应参数。 自适应控制器被配置为适于比植物和检测装置具有的实际死区时间短的预定死区时间。 输入到自适应参数调整装置的输入矢量的采样定时对应于实际死区时间。
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公开(公告)号：US6026793A
公开(公告)日：2000-02-22
申请号：US143542
申请日：1998-08-28
CPC分类号： G05B13/042 , F02D41/1402 , F02D41/1456 , F02D41/2454 , F02D41/2477 , F02D2041/1415 , F02D2041/1418 , F02D2041/143 , F02D2041/1433 , F02D41/2483
摘要： A control system for a plant includes a sensor for detecting an output from the plant, an adaptive controller for controlling a manipulated variable applied to control of the plant in a manner such that an output from the sensor becomes equal to a desired value, and an adaptive parameter vector-adjusting mechanism for adjusting an adaptive parameter vector used by the adaptive controller. The adaptive parameter vector-adjusting mechanism is constructed such that an updating component for updating the adaptive parameter vector is added to an initial value of the adaptive parameter vector, and updates the adaptive parameter vector by multiplying at least part of preceding values of the updating component by a predetermined coefficient which is larger than 0 but smaller than 1.
摘要翻译： 一种用于设备的控制系统包括用于检测来自所述设备的输出的传感器，用于以使得所述传感器的输出变为等于所需值的方式控制施加于所述设备的控制的操纵变量的自适应控制器，以及 自适应参数矢量调整机制，用于调整自适应控制器使用的自适应参数矢量。 自适应参数矢量调整机构被构造成使得用于更新自适应参数矢量的更新部件被添加到自适应参数矢量的初始值，并且通过将更新部件的至少一部分先前值相乘来更新自适应参数矢量 通过大于0但小于1的预定系数。
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公开(公告)号：US6125831A
公开(公告)日：2000-10-03
申请号：US136924
申请日：1998-08-21
CPC分类号： F02D41/2461 , F02D41/1402 , F02D41/1456 , G05B13/042 , F02D2041/1415 , F02D2041/1418 , F02D2041/143 , F02D2041/1433
摘要： A control system for a plant includes a sensor for detecting an output from the plant, an adaptive controller for controlling a manipulated variable applied to control of the plant in such a manner that an output from the sensor becomes equal to a desired value, and an adaptive parameter-adjusting device for adjusting adaptive parameters used by the adaptive controller. The adaptive parameter-adjusting device has an identification error-calculating device for calculating an identification error of the adaptive parameters and generating an identification error signal indicative of the calculated identification error, and an adjusting device for adjusting the adaptive parameters based on the calculated identification error. The adaptive parameter-adjusting device includes a non-linear filter for generating an output of 0 or approximately 0 in response to the identification error signal when the identification error is within a predetermined range. The adjusting device adjusts the adaptive parameters by using the output from the non-linear filter.
摘要翻译： 一种用于设备的控制系统包括用于检测来自所述设备的输出的传感器，用于控制施加到所述设备的控制的操作变量的自适应控制器，使得所述传感器的输出变得等于期望值，以及 自适应参数调整装置，用于调整自适应控制器使用的自适应参数。 自适应参数调整装置具有识别误差计算装置，用于计算自适应参数的识别误差并产生表示计算出的识别误差的识别误差信号;以及调整装置，用于基于所计算的识别误差来调整自适应参数 。 自适应参数调整装置包括非线性滤波器，用于当识别误差在预定范围内时响应于识别误差信号产生0或大约0的输出。 调节装置通过使用非线性滤波器的输出来调整自适应参数。
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公开(公告)号：US06640540B2
公开(公告)日：2003-11-04
申请号：US09978020
申请日：2001-10-17
申请人： Masahiro Sato , Yoshihisa Iwaki , Masaki Ueno , Shusuke Akazaki , Yuji Yasui
发明人： Masahiro Sato , Yoshihisa Iwaki , Masaki Ueno , Shusuke Akazaki , Yuji Yasui
IPC分类号： F01N300
CPC分类号： F01N3/0835 , F01N3/0814 , F01N3/0871 , F01N3/0878 , F01N3/30 , F01N11/00 , F01N11/002 , F01N13/009 , F01N13/0097 , F01N2430/06 , F01N2550/03 , F01N2570/12 , Y02T10/47
摘要： An adsorbent state determining apparatus is provided for accurately determining the state of an adsorbent including a deterioration as well as for allowing for recovery of the adsorbent if its adsorbent performance can be restored. The adsorbent state determining apparatus determines the state of an adsorbent for adsorbing hydrocarbons contained in exhaust gases. An upstream and a downstream temperature sensor are provided at upstream and downstream locations of the adsorbent in an exhaust system for detecting temperatures of exhaust gases upstream and downstream of the adsorbent. An engine water temperature sensor detects an operating state of the engine. An ECU estimates the temperature of the exhaust gas which should be detected downstream of the adsorbent during adsorption of the adsorbent based on the upstream temperature detected by the upstream temperature sensor and an engine water temperature of the engine detected by the engine water temperature sensor. The ECU then compares the estimated downstream temperature with the detected downstream temperature detected by the downstream temperature sensor during adsorption of the adsorbent to determine the adsorption state of the adsorbent.
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6.发明授权公开(公告)号：US06449944B1
公开(公告)日：2002-09-17
申请号：US09743906
申请日：2001-01-17
申请人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki , Tadashi Satoh , Masaki Ueno
发明人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki , Tadashi Satoh , Masaki Ueno
IPC分类号： F01N300
CPC分类号： F02D41/1403 , F01N11/007 , F01N2550/02 , F01N2900/0422 , F02D41/0235 , F02D41/1402 , F02D41/1441 , F02D41/1456 , F02D41/22 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1423 , F02D2041/1431 , F02D2041/1432 , F02D2041/1433 , Y02T10/47
摘要： A first exhaust gas sensor 5 (air-fuel ratio sensor) and a second exhaust gas sensor 6 (O2 sensor) are disposed respectively upstream and downstream of a catalytic converter. An exhaust system E which ranges from the exhaust gas sensor 5 to the exhaust gas sensor 6 and includes the catalytic converter 3 is regarded as an object exhaust system E, and a behavior of the object exhaust system E is modeled. When an internal combustion engine 1 is in operation, parameters to be set of the model of the object exhaust system E are sequentially identified based on the data of outputs of the exhaust gas sensors 5, 6. A deteriorated state of the catalytic converter 3 is determined based on the data of the identified values. Concurrent with the determination of the deteriorated state, a target air-fuel ratio for the internal combustion engine 1 is sequentially determined in order to converge the output of the exhaust gas sensor 5 to a given target value, and the air-fuel ratio of the internal combustion engine 1 is controlled to converge the output (the detected value of the air-fuel ratio) of the first exhaust gas sensor 5 to the target air-fuel ratio, for thereby allowing the catalytic converter 3 to achieve an optimum purifying capability. In this manner, the deteriorated state of the catalytic converter 3 can be determined in various operation states of the internal combustion engine 1 while keeping the purifying capability of the catalytic converter 3.
摘要翻译： 第一排气传感器5（空燃比传感器）和第二排气传感器6（O2传感器）分别设置在催化转化器的上游和下游。 从排气传感器5到排气传感器6并且包括催化转化器3的排气系统E被认为是对象排气系统E，并且对对象排气系统E的行为进行建模。 当内燃机1运转时，根据排气传感器5,6的输出数据，依次识别对象排气系统E的模型的参数，催化转化器3的劣化状态为 基于所识别的值的数据确定。 与劣化状态的判定同时，为了将排气传感器5的输出收敛到给定的目标值，依次确定内燃机1的目标空燃比，空燃比 控制内燃机1使第一废气传感器5的输出（空燃比的检测值）与目标空燃比收敛，从而使催化转化器3达到最佳的净化能力。 以这种方式，可以在保持催化转化器3的净化能力的同时，在内燃机1的各种运行状态下确定催化转化器3的劣化状态。
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7.发明授权公开(公告)号：US06370473B1
公开(公告)日：2002-04-09
申请号：US09680480
申请日：2000-10-06
申请人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki
发明人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki
IPC分类号： F02D4114
CPC分类号： F02D41/0082 , F02D41/1401 , F02D41/1402 , F02D41/1403 , F02D41/1443 , F02D41/1456 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433
摘要： An exhaust system is regarded as being equivalent to a system for generating an output of an O2 sensor or exhaust gas sensor from a combined air-fuel ratio that is produced by combining outputs of air-fuel ratio sensors associated with respective cylinder groups according to a filtering process of the mixed model type. With the equivalent system as an object to be controlled, an exhaust system controller determines a target value for the combined air-fuel ratio, and determines a target air-fuel ratio for the cylinder groups from the target combined air-fuel ratio. The outputs of the air-fuel ratio sensors are converted to the target combined air-fuel ratio under feedback control.
摘要翻译： 排气系统被认为等同于用于根据组合的空燃比产生O2传感器或废气传感器的输出的系统，该组合空燃比是通过将根据相应的气缸组相关联的空燃比传感器的输出组合而产生的 混合模型类型的过滤过程。 利用作为被控制对象的等效系统，排气系统控制器确定组合空燃比的目标值，并根据目标组合空燃比确定气缸组的目标空燃比。 在反馈控制下，空燃比传感器的输出转换为目标组合空燃比。
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公开(公告)号：US06292739B1
公开(公告)日：2001-09-18
申请号：US09465765
申请日：1999-12-17
申请人： Yuji Yasui , Shusuke Akazaki , Tadashi Sato , Masaki Ueno , Yoshihisa Iwaki , Hiroshi Tagami , Shuji Nagatani
发明人： Yuji Yasui , Shusuke Akazaki , Tadashi Sato , Masaki Ueno , Yoshihisa Iwaki , Hiroshi Tagami , Shuji Nagatani
IPC分类号： F02D4114
CPC分类号： F02D41/008 , F02D41/1402 , F02D41/1403 , F02D41/1456 , F02D41/1487 , F02D2041/1409 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1423 , F02D2041/1426 , F02D2041/1431 , F02D2041/1433
摘要： An allowable range (adaptive allowable range) for limiting a manipulated variable generated in order to converge the difference between an output from an O2 sensor disposed downstream of a catalytic converter and a target value thereof to “0” is sequentially updated depending on how the manipulated variable deviates from the allowable range.
摘要翻译： 为了将设置在催化转化器的下游的O2传感器的输出与目标值的输出之间的差积分为“0”，限制所产生的操作变量的允许范围（自适应容许范围）根据被操纵的 变量偏离容许范围。
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公开(公告)号：US06230486B1
公开(公告)日：2001-05-15
申请号：US09465395
申请日：1999-12-17
申请人： Yuji Yasui , Shusuke Akazaki , Tadashi Sato , Masaki Ueno , Yoshihisa Iwaki
发明人： Yuji Yasui , Shusuke Akazaki , Tadashi Sato , Masaki Ueno , Yoshihisa Iwaki
IPC分类号： F01N300
CPC分类号： F02D41/1441 , F02D41/1402 , F02D41/1403 , F02D41/1456 , G05B13/0255
摘要： A plant control system has a reference value setting unit for variably setting a reference value for an air-fuel ratio to be given to an exhaust system including a catalytic converter, depending on a component based on an adaptive control law of a manipulated variable of the air-fuel ratio generated by a controller according to an adaptive sliding mode control process in order to converge an output of an O2 sensor disposed downstream of the catalytic converter to a target value. The manipulated variable generated by the controller represents the difference between the air-fuel ratio and the reference value, required to converge the output of the O2 sensor to the target value.
摘要翻译： 工厂控制系统具有参考值设定单元，用于根据构成要素的操作变量的自适应控制定律，根据构成要素，对包含催化转换器的排气系统进行空燃比的基准值的可变设定 由控制器根据自适应滑动模式控制过程产生的空燃比，以将设置在催化转化器下游的O2传感器的输出收敛到目标值。 由控制器产生的操纵变量表示将O2传感器的输出收敛到目标值所需的空燃比和参考值之间的差。
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10.发明授权公开(公告)号：US06327850B1
公开(公告)日：2001-12-11
申请号：US09680482
申请日：2000-10-06
申请人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki
发明人： Yuji Yasui , Shusuke Akazaki , Yoshihisa Iwaki
IPC分类号： F01N300
CPC分类号： F02D41/0082 , F02D41/1401 , F02D41/1402 , F02D41/1403 , F02D2041/141 , F02D2041/1415 , F02D2041/1416 , F02D2041/1418 , F02D2041/142 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433
摘要： An object system is regarded as being equivalent to a system for generating an output of an O2 sensor or exhaust gas sensor from a target combined air-fuel ratio that is produced by combining target air-fuel ratios KCMD for respective cylinder groups according to a filtering process of the mixed model type. With the equivalent system as an object to be controlled, an air-fuel ratio processing controller determines a target combined air-fuel ratio, and determines a target air-fuel ratio KCMD for each of the cylinder groups from the target combined air-fuel ratio. The air-fuel ratios in the cylinder groups are manipulated into the target air-fuel ratio according to a feed-forward control process.
摘要翻译： 目标系统被认为等同于根据目标组合空燃比产生O2传感器或废气传感器的输出的系统，该目标组合空燃比是根据过滤器将各个气缸组的目标空燃比KCMD组合 混合模型类型的过程。 以等效系统作为被控制对象，空燃比处理控制器确定目标组合空燃比，并根据目标组合空燃比确定每个气缸组的目标空燃比KCMD 。 根据前馈控制过程将气缸组中的空燃比操纵为目标空燃比。
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