Invention Grant
- Patent Title: Vehicle steering device
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Application No.: US17621765Application Date: 2021-02-05
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Publication No.: US12024248B2Publication Date: 2024-07-02
- Inventor: Keitarou Tanaka
- Applicant: NSK LTD.
- Applicant Address: JP Tokyo
- Assignee: NSK LTD.
- Current Assignee: NSK LTD.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP 20019440 2020.02.07
- International Application: PCT/JP2021/004436 2021.02.05
- International Announcement: WO2021/157727A 2021.08.12
- Date entered country: 2021-12-22
- Main IPC: B62D5/04
- IPC: B62D5/04 ; B60W10/20 ; B60W10/22 ; B60W30/02 ; B62D6/00 ; B62D15/02

Abstract:
A vehicle steering device includes a target steering torque generation unit configured to generate target steering torque for a reaction force motor, and a torque correction value calculation unit configured to generate a torque signal Tref_p in accordance with road surface reaction force acting on a steering wheel of a vehicle. The torque correction value calculation unit generates the torque signal Tref_p by separating estimated road surface reaction force into a low-frequency component and a high-frequency component, providing level restriction on each of the low-frequency component and the high-frequency component, and adding torque values converted from the low-frequency component and the high-frequency component after the level restriction. The target steering torque generation unit generates the target steering torque by adding the torque signal Tref_p and a torque signal Tref_a generated based on a predetermined basic map in accordance with at least a vehicle speed and a steering angle of the vehicle.
Public/Granted literature
- US20220355856A1 VEHICLE STEERING DEVICE Public/Granted day:2022-11-10
Information query
IPC分类: