Abstract: A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation.

Abstract: A vehicle control device that controls a vehicle electric brake system includes: a shutdown determination part that determines whether the vehicle control device itself has been previously shut down normally or abnormally; a cranking determination part that determines whether an instruction to perform a cranking at a start-up of the vehicle is based on a manual operation of a driver of the vehicle or automatically; a diagnosis part that performs a plurality of initial diagnoses of the vehicle control device at the start-up of the vehicle; and a diagnosis skip control part configured to provide control such that the diagnosis part skips at least one of the initial diagnoses when the shutdown determination part determines that the vehicle control device has been previously shut down abnormally, and at the same time, when the cranking determination part determines that the cranking has been conducted based on the driver's manual operation.

Abstract: A vehicle control system includes a boost device, a braking unit, a cell motor, and a start operating unit. The boost device boosts a braking force applied by a foot brake to a vehicle with an output voltage from a battery. The braking unit, which is different than the foot brake, brakes the vehicle appropriately and keeps the braking force even in a case that the output voltage is not supplied from the battery, or which braking unit does not require the output voltage from the battery. The cell motor is driven by an output voltage from the battery and starts the engine. The start operation unit starts the cell motor, wherein the vehicle control system has a function not to start the cell motor when the start operation unit is operated, unless the braking unit is in operation.

Abstract: A vehicle control system includes a boost device, a braking unit, a cell motor, and a start operating unit. The boost device boosts a braking force applied by a foot brake to a vehicle with an output voltage from a battery. The braking unit, which is different than the foot brake, brakes the vehicle appropriately and keeps the braking force even in a case that the output voltage is not supplied from the battery, or which braking unit does not require the output voltage from the battery. The cell motor is driven by an output voltage from the battery and starts the engine. The start operation unit starts the cell motor, wherein the vehicle control system has a function not to start the cell motor when the start operation unit is operated, unless the braking unit is in operation.

Abstract: Steering apparatus includes at least one motor for generating a steering assisting force in a direction to steer a steerable wheel, two drive circuits having respective switching elements for PWM-controlling the motor, and a controller for differentiating, between the drive circuits, a control frequency at which the switching element is switched on and off. The differentiated PWM switching timing can effectively reduce switching noise and magnetostrictive sound of the motor.

Abstract: A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.

Abstract: Steering apparatus for transmitting a driving force of a motor through a gear mechanism to a rack shaft of a steering system and applying the driving force to steering road wheels in a steering direction. The apparatus has first and second motors. In the transmission of driving forces from output shafts of the first and second motors to the rack shaft, the phases of the two motors are essentially staggered by 180 degree.

Abstract: An electric power steering apparatus with a plurality of motors for applying a force to steering road wheels in a steering direction with mechanism which applies an increase in allocation of auxiliary steering force to an operating motor when at least one of the motors has failed.

Abstract: A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.

Abstract: A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.

Abstract: The invention provides a suspension control system that executes control of actuators that apply a vertical force to the vehicle wheels depending on the travel state of the vehicle, and at the same time, carry out power generation by using the energy of the vertical motion of the wheels and use the obtained energy to drive the actuator motor. In the suspension control apparatus in which the vehicle wheels can receive a force in the vertical direction from a motor, power generation is carried out by the motor depending on the vertical motion of the vehicle wheels, and a storage cycle that stores energy in a storage apparatus and a discharge cycle that drives the motor by the energy stored in the storage apparatus are repeated.

Abstract: Steering apparatus includes at least one motor for generating a steering assisting force in a direction to steer a steerable wheel, two drive circuits having respective switching elements for PWM-controlling the motor, and a controller for differentiating, between the drive circuits, a control frequency at which the switching element is switched on and off. The differentiated PWM switching timing can effectively reduce switching noise and magnetostrictive sound of the motor.

Abstract: A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.

Abstract: A suspension control method for controlling a suspension which includes respective actuators for left and right wheels of a vehicle, and which can apply forces in the upwards and downwards direction to the left and right vehicle wheels via these actuators. While the vehicle is being driven in a straight line, control is performed by giving priority to ride comfort; and, while the vehicle is being driven around a curve, control is performed by giving priority to roll suppression.

Abstract: The invention provides a suspension control system that executes control of actuators that apply a vertical force to the vehicle wheels depending on the travel state of the vehicle, and at the same time, carry out power generation by using the energy of the vertical motion of the wheels and use the obtained energy to drive the actuator motor. In the suspension control apparatus in which the vehicle wheels can receive a force in the vertical direction from a motor, power generation is carried out by the motor depending on the vertical motion of the vehicle wheels, and a storage cycle that stores energy in a storage apparatus and a discharge cycle that drives the motor by the energy stored in the storage apparatus are repeated.

Abstract: A suspension control method for controlling a suspension which includes respective actuators for left and right wheels of a vehicle, and which can apply forces in the upwards and downwards direction to the left and right vehicle wheels via these actuators. While the vehicle is being driven in a straight line, control is performed by giving priority to ride comfort; and, while the vehicle is being driven around a curve, control is performed by giving priority to roll suppression.

Abstract: A stabilizer effectiveness control device that has an actuator for changing the apparent torsion rigidity of a stabilizer provided between the left and right wheels of a motor vehicle, a control device for controlling the output of the actuator, and a device for detecting the degree of sharpness of a turn when the vehicle is turning. The actuator is driven and controlled in response to the degree of sharpness of the turn when the vehicle is turning so as to change the torsion rigidity of the stabilizer between the left and right wheels of the vehicle. When the sharpness of the turn is small the change in attitude of the vehicle body is controlled by the actuator to prioritize vehicle riding comfort, whereas when the degree of sharpness of the turn is increased the actuator bottoms out, thus allowing the intrinsic rigidity of the stabilizer to control the handling or running stability of the vehicle.

Abstract: A brake system for a vehicle includes a liquid pressure generating device for generating a liquid pressure for braking dependent upon a manual operation, an actuator for generating a liquid pressure for braking dependent upon an electrical command signal, and an electromagnetic switchover valve which is switchable between a first state in which a wheel brake is connected to the liquid pressure generating device upon deenergization of the electromagnetic switchover valve, and a second state in which the wheel brake is connected to the actuator upon energization of the electromagnetic switchover valve. The brake system further includes a controller.