Electric power steering device
AssigneeHonda Motor Co., Ltd.
InventorsYoshihiro Oniwa, Yasuo Shimizu, Shigeru Yamawaki, Kazushige Sugamata, Atsuhiko Yoneda
Life of this patent
Estimating the term…
Loading patent…
AssigneeHonda Motor Co., Ltd.
InventorsYoshihiro Oniwa, Yasuo Shimizu, Shigeru Yamawaki, Kazushige Sugamata, Atsuhiko Yoneda
Estimating the term…
An electric power steering device wherein mechanical friction is electrically provided. A steering torque value is detected by a steering torque sensor according to the operation of a steering wheel. An assist current value is calculated by an assist control section on the basis of the steering torque value. A target current value based on the assist current value is determined. For providing friction to the operation of the steering wheel, a friction control section and a friction torque value/current value conversion section generate a corrected steering torque value. A second corrected target current value is created by correcting a first corrected target current value by a friction current value. The corrected steering torque value is obtained by correcting the steering torque value by a friction torque value. The target current value is generated, resulting in a motor being subjected to driving control.
An electric power steering apparatus for determining a target current value with an assistance controller based on a steering torque value which is detected by a steering torque sensor depending on operation of a steering wheel, and controlling a motor based on the target current value, the electric power steering apparatus comprising:
An electric power steering apparatus for determining a basic assisting current value with an assistance controller based on a steering torque value which is detected by a steering torque sensor depending on operation of a steering wheel, determining an inertia current value with an inertia controller based on a differential value of the steering torque value, determining a damper current value with a damper controller based on a rotational speed of a motor, and controlling the motor based on an assisting current value that is calculated from the basic assisting current value, the inertia current value, and the damper current value, the electric power steering apparatus comprising:
Dependencies are inferred from the claim text.