Abstract: A control device for an on-board device including an actuator is configured to: supply power to a first microprocessor and a first driver circuit from a first power source through a first power supply path; supply power to a second microprocessor and a second driver circuit from a second power source through a second power supply path; and use the first and second driver circuits to drive the actuator. In this control device, the negative electrodes of the first and second power sources are electrically connected to a common ground portion. Specifically, the first negative electrode of the first power source and the second negative electrode of the second power source are connected to the common ground portion respectively through independent first and second connector portions.

Abstract: A control device for an on-board device including an actuator is configured to: supply power to a first microprocessor and a first driver circuit from a first power source through a first power supply path; supply power to a second microprocessor and a second driver circuit from a second power source through a second power supply path; and use the first and second driver circuits to drive the actuator. In this control device, the negative electrodes of the first and second power sources are electrically connected to a common ground portion. Furthermore, the control device includes a first and second sensor for measuring current or voltage between the vehicle body ground and the negative electrodes of the first and second power source, respectively. When detecting an abnormal current or voltage, the first and second microprocessors control the first and second driver circuits so as to place a limit on power supply to the actuator.

Abstract: Provided is a vehicle control device which makes it possible, in a redundant configuration, to make use of a normally operating part in a failed system. A vehicle control device having a redundant configuration includes a task switching function unit configured to switch tasks to be executed when an abnormality is detected. The task switching function unit being configured to, when a diagnostic function unit determines that an abnormality has occurred in a unit of a host system, cause the unit of the failed system to stop calculation of control variable, and stop drive control for a control object, and then execute calculation other than the calculation of the control variable of the host system, and the drive control for an electric motor, so that the calculation unit of the failed system can take over at least a part of calculation of a normal system or another on-vehicle device.

Abstract: A steering device includes: a turning actuator drive command signal output section to output the turning actuator drive command signal, a turning actuator drive command signal including a drive command signal, and a test drive command signal, the drive command signal being outputted to the turning actuator when the vehicle is in a first state, the test drive command signal being outputted to the turning actuator when the vehicle is in a second state, the turning actuator operation signal input section to receive a signal relating to the operation of the turning actuator, and the abnormality diagnosis section to judge whether or not the steering device is in an abnormal state, based on the signal relating to the operation of the turning actuator with respect to the test drive command signal.

Abstract: A control device for an on-board device including an actuator is configured to: supply power to a first microprocessor and a first driver circuit from a first power source through a first power supply path; supply power to a second microprocessor and a second driver circuit from a second power source through a second power supply path; and use the first and second driver circuits to drive the actuator. In this control device, the negative electrodes of the first and second power sources are electrically connected to a common ground portion. Specifically, the first negative electrode of the first power source and the second negative electrode of the second power source are connected to the common ground portion respectively through independent first and second connector portions.

Abstract: A control device for an on-board device including an actuator is configured to: supply power to a first microprocessor and a first driver circuit from a first power source through a first power supply path; supply power to a second microprocessor and a second driver circuit from a second power source through a second power supply path; and use the first and second driver circuits to drive the actuator. In this control device, the negative electrodes of the first and second power sources are electrically connected to a common ground portion. Furthermore, the control device includes a first and second sensor for measuring current or voltage between the vehicle body ground and the negative electrodes of the first and second power source, respectively. When detecting an abnormal current or voltage, the first and second microprocessors control the first and second driver circuits so as to place a limit on power supply to the actuator.

Abstract: A steering device includes: a turning actuator drive command signal output section to output the turning actuator drive command signal, a turning actuator drive command signal including a drive command signal, and a test drive command signal, the drive command signal being outputted to the turning actuator when the vehicle is in a first state, the test drive command signal being outputted to the turning actuator when the vehicle is in a second state, the turning actuator operation signal input section to receive a signal relating to the operation of the turning actuator, and the abnormality diagnosis section to judge whether or not the steering device is in an abnormal state, based on the signal relating to the operation of the turning actuator with respect to the test drive command signal.

Abstract: Provided is a vehicle control device which makes it possible, in a redundant configuration, to make use of a normally operating part in a failed system. A vehicle control device having a redundant configuration includes a task switching function unit configured to switch tasks to be executed when an abnormality is detected. The task switching function unit being configured to, when a diagnostic function unit determines that an abnormality has occurred in a unit of a host system, cause the unit of the failed system to stop calculation of control variable, and stop drive control for a control object, and then execute calculation other than the calculation of the control variable of the host system, and the drive control for an electric motor, so that the calculation unit of the failed system can take over at least a part of calculation of a normal system or another on-vehicle device.

Abstract: Provided is a power steering apparatus capable of preventing or reducing a sudden change in a steering force. A power steering apparatus includes a steering mechanism configured to transmit a steering operation on a steering wheel to a turning target wheel, a first actuation portion and a second actuation portion configured to provide a steering force to the steering mechanism, and a controller configured to output a first driving instruction signal for controlling driving of the first actuation portion and a second driving instruction signal for controlling driving of the second actuation portion. The controller includes an output distribution control portion configured to change a ratio of the output of the first driving instruction signal and a ratio of the output of the second driving instruction signal.

Abstract: In a pump device applicable to a power steering apparatus, a pump element is housed within a pump housing and is configured to drain a working oil, an electric motor is configured to drive the pump element, a reservoir tank is installed on the housing and is configured to reserve the working oil supplied to the oil element, a passage is formed within the pump housing and is connected to the pump element, and a control valve is installed in the pump housing, is configured to communicate with the passage, and is configured to control a flow of the working oil caused to flow through the passage.

Abstract: A power steering apparatus includes a power cylinder; a reversible pump; first and second hydraulic passages; a reservoir tank; a first supply passage arranged to supply the hydraulic fluid through the reversible pump to the second hydraulic passage; a first one-way valve provided in the first supply passage; a second supply passage arranged to supply the hydraulic fluid through the reversible pump to the first hydraulic passage; and a second one-way valve provided in the second supply passage. A Reynolds number of a flow in the first one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the first one-way valve is maximum. A Reynolds number of a flow in the second one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the second one-way valve is maximum.

Abstract: In a pump device applicable to a power steering apparatus, a pump element is housed within a pump housing and is configured to drain a working oil, an electric motor is configured to drive the pump element, a reservoir tank is installed on the housing and is configured to reserve the working oil supplied to the oil element, a passage is formed within the pump housing and is connected to the pump element, and a control valve is installed in the pump housing, is configured to communicate with the passage, and is configured to control a flow of the working oil caused to flow through the passage.

Abstract: A trochoid pump for supplying hydraulic fluid to a power cylinder in a power steering system. The trochoid pump includes a housing formed therein with an annular operating chamber. Outer rotor having internal teeth and inner rotor having external teeth are rotatably accommodated in the operating chamber in such a manner that the internal and external teeth are engageable with each other. A driving shaft is provided for rotationally driving the inner rotor. A low pressure passage is opened to a clearance between an outer peripheral surface of the outer rotor and an inner peripheral surface of the operating chamber within a discharge region at side of an engaging section at which the volume of the pump chamber is the minimum so as to release a high pressure applied to the outer peripheral surface of the outer rotor, to a low pressure side.