A motor controller has an assist controller that generates an assist instruction AC to generate an assist torque for lightening a steering load based on a detected value of a steering torque, and a follow controller obtaining a target value of a physical quantity regarding a steering operation and generating a follow instruction TC of a follow control. Further, an intervention detector in the motor controller detects an intervention of a driver or of a system, and a restrictor restricts an internal value that is used by the assist controller or by the follow controller, so that a ratio of the assist torque against the automatic steering torque is changed, which makes it possible to switch a control to the driver or to a system without a causing a wrong feeling to the driver.

A motor controller has an assist controller that generates an assist instruction AC to generate an assist torque for lightening a steering load based on a detected value of a steering torque, and a follow controller obtaining a target value of a physical quantity regarding a steering operation and generating a follow instruction TC of a follow control. Further, an intervention detector in the motor controller detects an intervention of a driver or of a system, and a restrictor restricts an internal value that is used by the assist controller or by the follow controller, so that a ratio of the assist torque against the automatic steering torque is changed, which makes it possible to switch a control to the driver or to a system without a causing a wrong feeling to the driver.

A valve system includes a valve configured to adjust a flow rate of hydraulic fluid in order to steer a work machine, and a control section configured to determine a command signal sent to the valve. The command signal determines a command flow rate of the hydraulic fluid based on a target flow rate corresponding to an input operation command and a change amount in the target flow rate. The control section is configured to control the change amount according to a magnitude of a reversal operation command when receiving the reversal operation command in order to operate the work machine in a direction opposite to a direction in which steering is operating. A work machine includes the valve system, a front frame, a rear frame, an articulate mechanism rotatably connecting the front frame to the rear frame, and a hydraulic actuator.

A vehicle control method for controlling a vehicle including executing a front wheel and a rear wheel including: front wheel-only steering operation control for turning the front wheel without turning the rear wheel in response to a steering instruction from a driving entity; executing rear wheel-only steering operation control for turning the rear wheel without turning the front wheel in response to the steering instruction from the driving entity; and executing a specified control execution process for executing one type of steering operation control specified by the driving entity among a plurality of types of steering operation control including at least the front wheel-only steering operation control and the rear wheel-only steering operation control.

A vehicle control method for controlling a vehicle including executing a front wheel and a rear wheel including: front wheel-only steering operation control for turning the front wheel without turning the rear wheel in response to a steering instruction from a driving entity; executing rear wheel-only steering operation control for turning the rear wheel without turning the front wheel in response to the steering instruction from the driving entity; and executing a specified control execution process for executing one type of steering operation control specified by the driving entity among a plurality of types of steering operation control including at least the front wheel-only steering operation control and the rear wheel-only steering operation control.

A vehicle is provided including an electronic power steering system, an electronic throttle control system, and a stability control system.

A vehicle is provided including an electronic power steering system, an electronic throttle control system, and a stability control system.

A vehicle control device according to an embodiment includes: a steering controller configured to control steering of a vehicle; and a controller configured to, when the vehicle is located at a first position on a travel route, instruct the steering controller to control the vehicle at a steering angle corresponding to a second position that is an advanced position from the first position in a traveling direction on the travel route.

A vehicle control device according to an embodiment includes: a steering controller configured to control steering of a vehicle; and a controller configured to, when the vehicle is located at a first position on a travel route, instruct the steering controller to control the vehicle at a steering angle corresponding to a second position that is an advanced position from the first position in a traveling direction on the travel route.

An electric steering control device controls a steering characteristic by outputting an assist torque using a motor, and the assist torque corresponds to a detection value of a steering torque which is applied to a steering shaft. The electric steering control device includes a steering target value generation unit generating a target value of the steering torque based on a state amount estimated from the target value of the steering torque and the assist torque, a command value generation unit generating a command value for controlling the motor to reduce a deviation between the target value of the steering torque and the detection value of the steering torque to a level lower than a predetermined threshold, and a motor drive unit driving the motor based on the command value.