Honda Motor Co., Ltd.

Keihin Corporation

Hirohito Ide

Daisuke Hoshino

Yoshihiro Ito

Hideharu Takamiya

Kyoji Hamamoto

Takashi Sugawara

Seigo Murashige

Shinichi Yataka

Hideki Imafuku

Kazuyuki Ohta

Takashi Kuribayashi

Yuki Mano

Ryoto Teranishi

Yusaku Suzuki

Ryuhei Miyoshi

Provided is an electric power steering device including: a motor; a drive device that supplies the motor with three-phase alternating current electric power; and a control device that controls the drive device, in which the control device is connected to a first power supply path that supplies power to the control device not via an ignition switch and a second power supply path that supplies power to the control device via the ignition switch, and the control device, in a case of detecting a failing of the first power supply path, operates with power supplied from the second power supply path and makes the motor generate an electromagnetic brake.

Electric power steering device

A vehicle power supply device acquires a state of a vehicle, controls a first switch disposed between an auxiliary power supply and a second load to be in a disconnected state in a case where the vehicle is in a predetermined state including ignition off, and controls the first switch to be in a connected state in a case where the vehicle is in a predetermined automatic driving state among automatic driving states including partial and conditional automatic driving.

Vehicle power supply device and method for controlling vehicle power supply device

A motor control apparatus drives an inverter which supplies and receives electric power with respect to a motor by pulse width modulation. The motor control apparatus sets a frequency of a carrier such that a frequency of a sideband wave component of the carrier which is used for the pulse width modulation and a frequency of a predetermined rotation order of the motor become different from each other.

Motor control apparatus

A drive control system for an electric motor includes a slippage determination device, a tentative vibration damper torque calculator, a vibration damper torque limit value setting device, a vibration damper torque setting device, and a control device. The vibration damper torque setting device is configured to set a control torque obtained by limiting a tentative vibration damper torque using a limit value set by the vibration damper torque limit value setting device. The control device is configured to control driving of the electric motor in accordance with a command value of a torque obtained by combining a requested torque for the electric motor with the control torque set by the vibration damper torque setting device.

Drive control system for electric motor and method of controlling electric motor

A load drive control system for a hybrid vehicle includes a zero current control execution device and an error compensating device. The zero current control execution device is configured to control a converter to output a substantially constant raised voltage that is higher than an inductive voltage generated in an electric motor. The error compensating device is configured to compensate for an attachment error of a first position detector based on a d-axis voltage command value for the electric motor calculated during zero current control.

Load drive control system for hybrid vehicle and method of controlling hybrid vehicle

A control system for an internal combustion engine, which is capable of preventing a variable valve-operating mechanism from suffering problems due to insufficiency of lubrication oil immediately after starting the engine. The ECU of the engine determines an amount of lubrication oil lubricating the variable valve-operating mechanism which is capable of continuously changing an intake lift, holds the intake lift at a predetermined lift if it is determined that the oil amount is less than a predetermined amount, and controls the amount of intake air by changing the opening of a throttle valve capable of adjusting the amount of intake air, when the operation of the variable valve-operating mechanism is inhibited.

Control system and method for internal combustion engine

A control system for an internal combustion engine having a valve operating characteristic varying mechanism for continuously changing a lift amount of at least one intake valve of the engine. The valve operating characteristic varying mechanism includes a control shaft for changing the lift amount, a motor for rotating the control shaft, and a transmission mechanism provided between an output shaft of the motor and the control shaft for transmitting an actuating force of the motor to the control shaft. A first rotational angle sensor detects a rotational angle of the output shaft of the motor, and a second rotational angle sensor detects a rotational angle of the control shaft. A control of the lift amount of the at least one intake valve is performed according to the rotational angle detected by the first rotational angle sensor or the second rotational angle sensor. A failure diagnosis of the first rotational angle sensor, the second rotational angle sensor, and the transmission mechanism is performed based on the rotational angles detected by the first and second rotational angle sensors.

Control system for internal combustion engine

A control system for a plant is provided. A feedback control input is calculated so that a controlled output of the plant coincides with a target value. The feedback control input is averaged to calculate an averaged feedback control input. A hold control input is calculated according to an operating condition of the plant. A corrected hold control input is calculated by combining the hold control input with the averaged feedback control input according to a preset ratio. A control input to the plant is set to the feedback control input in a first state where a control deviation between the controlled output and the target value is greater than a predetermined threshold value, and setting the control input to the corrected hold control input in a second state where the control deviation is equal to or less than the predetermined threshold value. The feedback control input is made to gradually approach to or coincide with the corrected hold control input in the second state.

Control system with input averaging and hold control input

A control system for a plant can include a feedback control input which can be calculated so that a controlled output of said plant coincides with a target value. A hold control input can be calculated according to an operating condition of said plant. A control input to said plant is set to the feedback control input when a control deviation between the controlled output and a target value is greater than a predetermined threshold value, and the control input is set to the hold control input when the control deviation is equal to or less than the predetermined threshold value. The feedback control input is made to gradually approach to or coincide with the hold control input when the control input is set to the hold control input.

Control system for plant

A control system for a plant, including a sliding mode controller and a transfer characteristic adjusting module. The sliding mode controller calculates a feedback control input with a sliding mode control so that an controlled output of the plant coincides with a target value. The transfer characteristic adjusting module is connected to an output of the sliding mode controller, and has a transfer characteristic set according to a transfer function of a controlled object model which is obtained by modeling the plant. A control input to the plant is set to an output of the transfer characteristic adjusting module. The transfer characteristic of the transfer characteristic adjusting module is set so that a composite transfer function indicative of a transfer characteristic which is obtained by combining the transfer characteristic of the transfer characteristic adjusting module and a transfer characteristic of the controlled object model, coincides with a desired target transfer function.

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Wako, Japan

Hirohito Ide