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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Iwaki; Yoshihisa
Address:
Wako, JP
No. of patents:
52
Patents:


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Patent Number Title Of Patent Date Issued
7765996 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus August 3, 2010
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between temperature data of the active element (10) and a target temperature, a component depending
7490596 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus February 17, 2009
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between temperature data of the active element (10) and a target temperature, a component depending
7337772 Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium March 4, 2008
The temperature of an exhaust gas flowing through an exhaust passage 3 is estimated or detected, and the temperature of an active element of an exhaust gas sensor 8. (O.sub.2 sensor) is controlled at a predetermined target temperature by a heater using the estimated or detected tempe
7305299 Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaus December 4, 2007
An apparatus for controlling temperature of an exhaust gas sensor can include a temperature estimating device for sequentially estimating the temperature of an active element based on a predetermined element temperature model, which is representative of a temperature change of the ac
7251536 Control system for plant July 31, 2007
A control system for a plant is disclosed. The control system includes a controller for controlling the plant based on a controlled object model which is obtained by modeling the plant. The controlled object model is modeled using an input and an output of the plant which are sampled at
7231265 Control system for plant June 12, 2007
A control system for a plant is disclosed. The control system includes a controller which controls the plant based on a controlled object model which is obtained by modeling the plant. The controlled object model is modeled using an input and an output of the plant which are sampled at
7216006 Control system for a plant including a slide mode controller May 8, 2007
A control system for a plant is provided. This control system can control the plant more stably, when the model parameters of the controlled object model which are obtained by modeling the plant, which is a controlled object, are identified and the sliding mode control is performed using
7200449 Control system for plant and air-fuel ratio control system for internal combustion engine April 3, 2007
A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the plant coincides with a
7124015 Control apparatus for plant October 17, 2006
The present invention provides a control apparatus for a plant, which can suppress excessive correction for a spiky disturbance being applied and maintain a good controllability, when controlling the plant, which is a controlled object, with the self-tuning regulator. A detected equivale
7050865 Control system for plant May 23, 2006
A control system for a plant is disclosed. According to this system, a model parameter vector of a controlled object model which is obtained by modeling the plant, is identified. A controller controls the plant using the identified model parameter vector. An identifying error of the mode
7050864 Control system for a plant using identified model parameters May 23, 2006
A control system for a plant is provided. This control system can control the plant more stably, when the model parameters of the controlled object model which are obtained by modeling the plant, which is a controlled object, are identified and the sliding mode control is performed using
6990403 Control system for plant January 24, 2006
A control system for a plant is disclosed. In this control system, a model parameter vector of a controlled object model which is obtained by modeling said plant, is calculated. A sliding mode controller is included in the control system. The sliding mode controller controls the plant
6941936 Control system for internal combustion engine September 13, 2005
A control system for an internal combustion engine having at least one control device that affects an air-fuel ratio of an air-fuel mixture to be supplied to the engine, is disclosed. An air-fuel ratio correction coefficient is calculated for correcting an amount of fuel to be supplied
6859717 Control system for plant February 22, 2005
A control system for a plant is disclosed. The control system includes a response specifying type controller for controlling the plant with a response specifying type control. The response specifying type controller calculates a nonlinear input according to a sign of a value of a switchi
6839598 Control system for plant using an identified model parameter vector January 4, 2005
A control system for a plant is disclosed. According to this system, a model parameter vector of a controlled object model which is obtained by modeling the plant, is identified. A controller controls the plant using the identified model parameter vector. An identifying error of the mode
6830032 Control system for throttle valve actuating device December 14, 2004
A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. A control object model is defined by modeling the throttle valve actuating
6823839 Apparatus for and method of controlling temperature of exhaust gas sensor, and recording medium November 30, 2004
An apparatus controls the temperature of an exhaust gas sensor disposed in an exhaust passage of an internal combustion engine. An exhaust gas temperature estimating unit sequentially estimates the temperature of exhaust gas flowing through the exhaust passage, using at least a param
6816776 Control system for plant November 9, 2004
A control system for a plant is disclosed. According to this system, a value of a switching function which is defined as a linear function of a deviation between the output of the plant and a control target value, is calculated. A reaching mode input is calculated. The reaching mode inpu
6816774 O2 sensor, apparatus for and method of controlling air-fuel ratio, and recording medium storing November 9, 2004
A system controls the air-fuel ratio in an exhaust gas supplied from an internal combustion engine to a catalytic converter in order to keep an output voltage Vout of an O.sub.2 sensor disposed downstream of the catalytic converter at a predetermined target value Vop. In the system,
6814067 Control system for plant and air-fuel ratio control system for internal combustion engine November 9, 2004
A control system for a plant, having an identifier and a controller. The identifier identifies model parameters of a controlled object model which is obtained by modeling the plant. The controller calculates a control input to the plant so that an output from the plant coincides with a
6760658 Exhaust emission control system for internal combustion engine July 6, 2004
An exhaust emission control system for an internal combustion engine having an exhaust system is disclosed. The control system may include an exhaust gas purifying device provided in the exhaust system and an oxygen concentration sensor provided downstream of the exhaust gas purifying
6698186 Air-fuel ratio controller for internal combustion engines March 2, 2004
A target air-fuel ratio KCMD for an exhaust gas upstream of a catalytic converter is sequentially determined to converge the output VO2/OUT of an O.sub.2 sensor downstream of the catalytic converter to a target value VO2/TARGET, and the amount of fuel supplied to an internal combustion
6684150 Apparatus for and method of controlling plant January 27, 2004
A manipulation variable generating unit 7 for generating a target air-fuel ratio KCMD to converge the output of an oxygen concentration sensor 5 disposed downstream of a catalytic converter 3 in an exhaust system E as a plant to a given target value has a plurality of estimators for gene
6681567 Control system for internal combustion engine January 27, 2004
A control system for an internal combustion engine having an exhaust system, an intake system, and an exhaust gas recirculation mechanism for recirculating exhaust gases from the exhaust system to the intake system is disclosed. The exhaust system is provided with an adsorbent for ad
6668214 Control system for throttle valve actuating device December 23, 2003
A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. The control system includes a predictor for predicting a future throttle v
6668200 Control system for plant December 23, 2003
A control system for a plant, includes a sliding mode controller for controlling the plant with a sliding mode control. The sliding mode controller controls the plant using a switching function defined as a linear function of a deviation between an output of the plant and a control t
6636783 Control system for throttle valve actuating device October 21, 2003
A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. At least one model parameter of a controlled object model which is obtaine
6550449 Control system for internal combustion engine April 22, 2003
A control system for an internal combustion engine having a catalyst arranged in the exhaust system is disclosed. In the control system, catalyst temperature rise accelerating control is executed by increasing the intake air amount immediately after starting of the engine and retardi
6449944 Method of judging deterioration of emission gas control catalyst device September 17, 2002
A first exhaust gas sensor 5 (air-fuel ratio sensor) and a second exhaust gas sensor 6 (O.sub.2 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
6449943 Method of evaluating deteriorated state of catalytic converter for purifying exhaust gas September 17, 2002
The values of parameters of a model of an object exhaust system including a catalytic converter are identified from the data of outputs from an air-fuel ratio sensor and an O.sub.2 sensor which are disposed respectively upstream and downstream of the catalytic converter while an inte
6389804 Degradation discrimination system of internal combustion engine exhaust gas purification system May 21, 2002
A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage branched from an exhaust pipe of the engine, which is opened by a switch-over valve at starting of the engine to introd
6378296 Degradation discrimination system of internal combustion engine exhaust gas purification system April 30, 2002
A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage branched from an exhaust pipe of the engine, which is opened by a switch-over valve at starting of the engine to introd
6370473 Air-fuel ratio control apparatus for multicylinder internal combustion engine April 9, 2002
An exhaust system is regarded as being equivalent to a system for generating an output of an O.sub.2 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 f
6354076 Exhaust gas purification system of internal combustion engine March 12, 2002
A system for purifying exhaust gas generated by an internal combustion engine having an adsorbent, installed in an exhaust system of the engine, which adsorbs unburned components of the exhaust gas such as hydrocarbons generated by the engine. The system has a first temperature sensor fo
6327850 Air-fuel ratio control apparatus for multicylinder internal combustion engine December 11, 2001
An object system is regarded as being equivalent to a system for generating an output of an O.sub.2 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 pro
6292739 Air-fuel ratio control system for internal combustion engine September 18, 2001
An allowable range (adaptive allowable range) for limiting a manipulated variable generated in order to converge the difference between an output from an O.sub.2 sensor disposed downstream of a catalytic converter and a target value thereof to "0" is sequentially updated depending on how
6286306 Exhaust gas purification system of internal combustion engine September 11, 2001
A system for purifying exhaust gas generated by an internal combustion engine having a bypass exhaust gas passage branching from an exhaust pipe which is opened or closed by a switch-over valve, and an adsorbent which adsorbs unburneds component in the exhaust gas installed at the bypass
6276131 Apparatus for controlling internal combustion engine August 21, 2001
While the amount of intake air introduced into an internal combustion engine is being increased by an intake air quantity control unit, an ignition timing control unit manipulates the ignition timing of the internal combustion engine to converge the rotational speed of the internal c
6266605 Plant control system July 24, 2001
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 rat
6230486 Plant control system May 15, 2001
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 rat
6195988 Air-fuel ratio control system for internal combustion engine March 6, 2001
An object system for generating an output signal of an O.sub.2 sensor from a target air-fuel ratio is expressed as a model including a response delay element and a dead time element. Data of identified values of parameters of the model are sequentially generated by an identifier. Data of
6189317 Apparatus for controlling internal combustion engine February 20, 2001
An apparatus for controlling an internal combustion engine has an amount-of-intake-air control unit for generating a command value for the opening of a flow control valve in an intake passage of the engine, which emits exhaust gases through a catalytic converter, so as to increase an
6188953 Plant control system February 13, 2001
A plant control system has an actuator for generating an input to the plant, a first sensor for detecting an output from the plant, a manipulated variable determining unit for sequentially determining a manipulated variable which determines the input to the plant to equalize the outp
6182445 Exhaust switch-over valve malfunction detection system of internal combustion engine February 6, 2001
A system for detecting malfunctions of an exhaust switch-over valve of an internal combustion engine, which opens/closes a bypass exhaust gas passage branched from an exhaust pipe of the engine and storing an adsorbent that adsorbs unburned components of the exhaust gas generated by
6125831 Control system for plants October 3, 2000
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 param
6116213 Control system for controlling internal combustion engine September 12, 2000
A control system for controlling an internal combustion engine which discharge exhaust gases through an emission purifier includes a controller which increases the quantity of intake air drawn into the internal combustion engine while the internal combustion engine is idling after the
6112517 Plant control system September 5, 2000
A plant control system controls a plant modeled as a discrete-system model including an element relative to a response delay of the plant. The plant control system includes an actuator for generating an input to the plant, a first detector detecting an output from the plant, and a second det
6082099 Plant control system July 4, 2000
A plant control system for controlling a plant includes an actuator for generating an input to the plant and a first detector for detecting an output from the plant. A manipulated variable determining unit determines a manipulated variable which determines the input to the plant accordin
6079205 Plant control system June 27, 2000
A plant control system controls a plant modeled as a discrete-system model including an element relative to a response delay of the plant and an element relative to a dead time of the plant. The plant control system includes an actuator for generating an input to the plant, a first d
6026793 Control system for plants February 22, 2000
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
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