Patent attributes
A vehicle steering assist device includes a first detector to detect steering torque by a driver's steering wheel operation, a first calculator to calculate assist steering torque for the detected steering torque, a second calculator to calculate target steering torque to perform steering control, a controller to switch the first calculator from an active state to an inactive state to limit an output of the assist steering torque when the second calculator is in an active state, an EPS torque setter to set EPS torque to drive an EPS motor based on outputs from the second calculator and the controller, and a second detector to detect a driver's holding state of a steering wheel. Even when the second calculator is in the active state, when the second detector detects that a driver holds the steering wheel, the controller switches the first calculator from the inactive state to the active state.
