Invention Application
- Patent Title: ELECTRIC POWER STEERING APPARATUS
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Application No.: US16785832Application Date: 2020-02-10
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Publication No.: US20200172162A1Publication Date: 2020-06-04
- Inventor: Takayoshi SUGAWARA , Yousuke IMAMURA , Masahiro MAEDA
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@222ac013
- Main IPC: B62D6/00
- IPC: B62D6/00 ; B62D5/04

Abstract:
An electric power steering apparatus includes: a current command value determining section that determines a current command value based on steering torque and vehicle speed; a vibration extracting filter that extracts a first vibration component having a predetermined amplitude and first predetermined frequency range depending on motor angular velocity; a vibration extracting section that extracts a second vibration component having a second predetermined frequency range depending on motor angular acceleration; a first compensation value calculating section that calculates a first vibration suppression compensation value based on the first vibration component extracted by the vibration extracting filter; and a second compensation value calculating section that calculates a second vibration suppression compensation value based on the second vibration component; and suppresses vibrations of the motor by feeding back the first vibration suppression compensation value and the second vibration suppression compensation value calculated to the current command value.
Information query
IPC分类: