Invention Grant
- Patent Title: Power steering apparatus
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Application No.: US16482658Application Date: 2018-02-14
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Publication No.: US11352049B2Publication Date: 2022-06-07
- Inventor: Tsukasa Miyajima
- Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Applicant Address: JP Hitachinaka
- Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
- Current Assignee Address: JP Hitachinaka
- Agency: Foley & Lardner LLP
- Priority: JPJP2017-044458 20170309
- International Application: PCT/JP2018/004979 WO 20180214
- International Announcement: WO2018/163724 WO 20180913
- Main IPC: B62D5/04
- IPC: B62D5/04 ; B62D6/00 ; B62D15/02
Abstract:
A control device (15) is equipped with a steering angle returning torque target value setting unit (30) which calculates a returning control amount target value (MapOut) based on a vehicle speed (Vs) and a turning angle (θb), and with a steering angle returning torque command signal calculation unit (31) which calculates a retuning control amount (RetOut) based on the retuning control amount target value (MapOut). The steering angle returning torque command signal calculation unit (31) is equipped with a rate limiter (36). The rate limiter (36) determines a change in the vehicle speed (Vs) from a vehicle speed sensor (19), and gradually increases or decreases the retuning control amount target value (MapOut) at a certain rate and then outputs the returning control amount (RetOut).
Information query
IPC分类:
