Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Other

Kabushiki Kaisha Toshiba

Hitachi Car Engineering Co., Ltd.

Nec Corporation

Nissan Motor Company Limited

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Shinji Nakagawa

Minoru Ohsuga

Toshio Hori

Takanobu Ichihara

Kazuhiko Kanetoshi

Kozo Katogi

Masami Nagano

Minoru Oosuga

Mamoru Nemoto

Yutaka Takaku

Toshio Ishii

Shiro Yamaoka

Yoshikuni Kurashima

Hiroyuki Takamura

Yoichi Iihoshi

Minoru Osuga

Akihito Numata

Shinya Satou

Yoshihisa Fujii

Shigeru Kawamoto

Toshiharu Nogi

Takuya Shiraishi

Mitsuo Yamashita

Eisaku Fukuchi

Hiromu Kakuya

Kouzou Katogi

Youichi Iihoshi

Yuusuke Kihara

Toshimichi Minowa

Naoki Watanabe

Hiroshi Fujii

Nobuyasu Kanekawa

Shinya Sato

Hatsuo Nagaishi

Toshiyuki Hirota

Motoyuki Abe

Takuya Mayuzumi

Naoki Yamamoto

Masahiro Toyohara

Takahiro Yoshino

Atsushi Shimada

Kiyoshi Hashimoto

Mamoru Fujieda

Ryo Kusakabe

Osamu Mukaihara

Takashi Okamoto

Toshihiro Aono

Yusuke Kihara

Hidefumi Iwaki

Tomohiko Takahashi

Kazuaki Tokunaga

Kiyoshi Tomimori

Masato Kunitomo

Tomohiro Kawasaki

Hiroshi Sekine

Takayuki Wako

Kazunori Hayakawa

Akira Hikichi

Kosaku Shimada

Kouzo Katougi

Mutsuhiro Naka

Soichiro Tanaka

A highly accurate feature extraction is performed on a signal with temporal variation in amplitude, and this signal is restored to detect a state of a transmission source (output source) of this signal to be normal or abnormal. A signal processing method includes: separating a signal X into an oscillation signal with a constant amplitude Xand a signal with temporal variation in amplitude X, the separating performed by a signal separator; performing processing of dimensionality reduction, compression, or the like, on the oscillation signal Xso as to extract a feature value (information) included in the oscillation signal X; and outputting a restored signal X' that is restored from the oscillation signal Xby performing processing inverse to the processing of dimensionality reduction, compression, or the like, based on the extracted feature value, performing the processing, the inverse processing, and the outputting performed by a signal Xrestorer.

Signal processing system and signal processing method

There is provided a control device that prevents the occurrence of an abnormality in control using artificial intelligence in the case where an abnormality occurs in another terminal that performs the control using the artificial intelligence. A control means (a first control unit) performs the control using artificial intelligence. The control means (second control unit) performs control different from the artificial intelligence. A control switching unit (a switching determination means, a switch) is configured to, when another terminal having the control means (the first control unit) is normal, cause the own control means (the first control unit) to perform the control using artificial intelligence, and when an abnormality occurs in another terminal having the control means (the first control unit), cause the control means (the second control unit) to perform the control different from artificial intelligence.

Control switching device for abnormality prevention in multiple terminals

A control device includes: an input information storage unit that stores track record input information that is information regarding an input signal having a track record; an artificial intelligence control unit that controls a control target using artificial intelligence based on the input signal; and an input signal evaluation unit that judges whether a value of the input signal is within a range having a track record based on the track record input information and, if the value of the input signal is within the range having the track record, permits transmission of the input signal to the artificial intelligence control unit. The safety of the control device using artificial intelligence is enhanced.

Control device using artificial intelligence

A control system includes a manipulation interface unit that generates manipulation quantity information and priority information, a plurality of automatic control units that generates automatic control outputs based on predetermined inputs, safety verification units that confirm safety of the automatic control outputs, and an output control unit that outputs a control output according to any one of a predetermined automatic control output and the manipulation quantity information. Based on the priority information, the output control unit selects an automatic control output having the highest selection priority from the automatic control outputs of which the safety is confirmed to generate the control output, generates the control output according to the manipulation quantity information when the safety verification units confirm the safety, or generates the control output according to the manipulation quantity information regardless of the safety confirmation results.

Control system and control method

An object of the invention is to provide an abnormality detection device that can detect a processing abnormality of various types of software. The abnormality detection device according to the invention divides an output data series which is output by software into one or more clusters, determines that the output data included in any cluster is normal, and determines that the output data not included in any cluster is abnormal.

Abnormality detection device

The present invention suppresses the worsening of stability due to a variation in EGR amounts between cylinders in a spark ignition engine. An engine control device for controlling a spark ignition engine equipped with an EGR means for recirculating exhaust gas in a combustion chamber and an air-fuel-ratio detection means for detecting the air-fuel ratio in each cylinder, the engine control device being characterized by being equipped with a means for changing the parameters for ignition control of a rich cylinder, when the air-fuel ratio of cylinders varies and there are richer cylinders and leaner cylinders relative to a prescribed air-fuel ratio during the execution of exhaust gas recirculation by the EGR means.

Engine control device

An object of the invention is to provide a drive device of a fuel injection device which can increase the accuracy in an injected fuel injection amount by combining the fuel injections from a plurality of injection pulse widths. In the drive device of the fuel injection device which has a function of driving the fuel injection device such that the fuel injection is performed plural times in one combustion cycle, the fuel injection device is driven such that a fuel injection at a target opening level in which a valve element or a movable element of the fuel injection device reaches a regulation member and a fuel injection at an intermediate opening level in which the valve element does not reach the regulation member are included in the plural times of division injections performed in one combustion cycle.

Drive device for fuel injection device

The purpose of the present invention is to detect deterioration of dead time characteristics of an air-fuel ratio sensor with high accuracy without causing running performance and exhaust performance to worsen. The present invention provides a control device for an engine, characterized by being equipped with: a means for detecting an air-fuel ratio; a means for changing the air-fuel ratio in a predetermined cycle; and a means for sending a notification of an abnormality in the air-fuel ratio detection means or causing at least a portion of the engine control to run in a fail-safe mode when the amplitude of an output signal of the air-fuel ratio detection means at a predetermined frequency is within a predetermined range and the required time or required angle to arrive at a predetermined value of the output signal of the air-fuel ratio detection means from a reference position or reference time point of an engine-related parameter is equal to a predetermined value or higher.

Control device for engine

Provided is an engine control apparatus capable of detecting degradation in particulate filter performance. An input unit receives a first signal indicating an exhaust gas state (Tpf_) inside or downstream of a particulate filter that traps particulate substance contained in engine exhaust gas. A determination unitdetermines whether the particulate filter is degraded on the basis of the exhaust gas state (Tpf_) indicated by the first signal in a period (fFC=1) in which fuel supply to the engine is blocked.

Engine control apparatus

It is possible to prevent the stability of an engine from deteriorating even when degrees of changes over time of injection characteristics are different in each fuel injection valve. An inter-cylinder air-fuel ratio variation detection unitcalculates an air-fuel ratio variation index (Ind_imb) which indicates a degree of variation in an air-fuel ratio between cylinders from an exhaust air-fuel ratio, engine rotation speed, or the like. Unlike in a case where the air-fuel ratio variation index (Ind_imb) is lower than a set value, when the air-fuel ratio variation index (Ind_imb) is higher than the set value, a fuel injection pulse width limitation unitsets a (allowable) minimum value (Min_TI) of a fuel injection pulse width so as to be greater. In addition, a fuel injection pulse width calculation unitcalculates fuel injection pulse widths (TI_1, TI_2, TI_3, and TI_4) of cylinders so as not to be lower than the minimum value (Min_TI).

Control device and control method of engine

When a parking brake mechanism is in a braking state and an operation switch is switched to a braking-released state, a control unit of an electric vehicle brings a parking brake mechanism into a braking-released state on the condition that the control unit detects using a stop lamp switch that the brake pedal is not depressed and detects that the shift range of the shift lever is a P range.

Electric parking brake device

A control device of an engine includes means for detecting an efficiency of the engine, means for detecting a combustion stability of the engine, means for detecting an HC discharged quantity, and means for executing a notification. The notification is executed when the efficiency of the engine and the combustion stability of the engine do not fall in a predetermined region A. The predetermined region Ais a range of the efficiency of the engine and the combustion stability of the engine. The HC discharged quantity at the time of engine start is a predetermined value or less.

Control device of engine

An engine control apparatus having a unit for calculating the mean value of the angular acceleration with respect to each cylinder; a unit for calculating the variance of the angular acceleration with respect to each cylinder; a unit for estimating the torque and the air/fuel ratio with respect to each cylinder on the basis of the mean value and the variance; and a unit for controlling at least one of the intake air amount, the fuel injection amount and the ignition timing with respect to each cylinder on the basis of the estimated torque and air/fuel ratio.

Control apparatus for controlling intake air flow, fuel injection amount, and ignition timing at each cylinder of a multi-cylinder engine

Provided is a control device for an engine which is capable of purifying NOx with high efficiency at a restart after an idle stop without deteriorating purification efficiency of HC and CO. At the restart after the idle stop, an air-fuel ratio is controlled to be rich, and an atmosphere inside of a catalyst is estimated on the basis of a required time &#x394;T from a time point at which an output value (VO) of first oxygen concentration detection means upstream of the catalyst exceeds a predetermined value Ato a time point at which an output value (VO) of second oxygen concentration detection means downstream of the catalyst exceeds a predetermined value A, whereby an air-fuel ratio at next and subsequent restarts is corrected so that the atmosphere inside of the catalyst is optimized at the next and subsequent restarts.

The present invention performs correction appropriately according to errors in the fuel system and air system respectively and corrects both variations in the air-fuel ratio and torque. When the difference between a target air-fuel ratio and a real air-fuel ratio is equal to or below a predetermined value when feedback control based on the air-fuel ratio of an exhaust manifoldA is in progress, the air-fuel ratio of a cylinder cylhaving the largest variation of angular acceleration is corrected to the rich side, for example, by increasing the amount of fuel. Angular acceleration per cylinder is then detected again and when the variation in angular acceleration among cylinders is not eliminated, it is judged that there is an error in the amount of air control of the cylinder having the largest variation and the amount of air, amount of fuel, ignition timing or the like are corrected.

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Hitachinaka, Japan

Shinji Nakagawa