Electric power steering apparatus
AssigneeMitsubishi Electric Corporation
InventorsIsao KEZOBO, Kenta TANAKA, Masaharu TANAKA, Akiyoshi TAKASHIMA
Life of this patent
Estimating the term…
Abstract
An electric power steering apparatus includes a high-frequency compensation unit that outputs a high-frequency compensation signal obtained by filtering the high-frequency components of an assist torque command signal and multiplying the filtered high-frequency components by a gain; a corrected steering torque signal obtained by negatively or positively feeding back the high-frequency compensation signal to a steering torque signal is inputted to an assist torque command calculation unit; the assist torque command calculation unit outputs the assist torque command signal in accordance with the corrected steering torque signal.
Claims9
An electric power steering apparatus comprising:
- a motor that outputs assist torque, based on a steering torque signal from a torque sensor for detecting steering torque;
- and
- a control apparatus to control the assist torque of the motor,
- wherein the control apparatus includes
- an assist torque command calculator to calculate and output an assist torque command signal for making the motor generate the assist torque, and
- a high-frequency compensator to output a high-frequency compensation signal obtained by filtering high-frequency components of the assist torque command signal and multiplying the filtered high-frequency components by a gain,
- wherein the assist torque command calculator receives a corrected steering torque signal produced by negatively or positively feeding back the high-frequency compensation signal to the steering torque signal and then outputs the assist torque command signal in accordance with the inputted corrected steering torque signal.
Dependencies are inferred from the claim text.