Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MOTOR CONTROL SYSTEM AND POWER STEERING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/163588
Kind Code:
A1
Abstract:
Provided is a motor control system including an inverter for driving a motor and a control operation unit for feedback controlling the inverter, wherein the control operation unit includes a voltage control operation unit that computes a voltage command value indicating a voltage to be applied to the motor from the inverter on the basis of a current deviation between the current command value and the actual current detection value, and a torque ripple compensation operation unit that adds a compensation value, which compensates torque ripple in the motor, to an upstream signal value in the flow of signals passing through the voltage control operation unit; and the torque ripple compensation operation unit includes a phase compensation unit that computes a compensation value component in the voltage control operation unit based on an actual angular velocity value indicating an angular velocity at which the motor rotates, and an inverse characteristic operation processing unit that computes a compensation value component for compensating the torque ripple on the basis of the reverse characteristic of an open-loop transfer function in the feedback control.

Inventors:
ENDO,Shuji (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
TATEWAKI,Tokuji (2-8 Shin-Kawasaki, Saiwai-ku, Kawasaki-sh, Kanagawa 32, 〒2120032, JP)
UEDA,Tomoya (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
WATAHIKI,Masanori (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
MORI,Tomonari (338 Kuzetonoshiro-cho Minami-ku, Kyoto-sh, Kyoto 05, 〒6018205, JP)
Application Number:
JP2019/004937
Publication Date:
August 29, 2019
Filing Date:
February 13, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIDEC CORPORATION (338 Kuzetonoshiro-cho, Minami-ku Kyoto-sh, Kyoto 05, 〒6018205, JP)
NIDEC ELESYS CORPORATION (2-8 Shin-Kawasaki, Saiwai-ku Kawasaki-sh, Kanagawa 32, 〒2120032, JP)
International Classes:
H02P23/04; B62D6/00; H02P27/06
Download PDF: