Vehicle steering device
US8682538B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Dec 21, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D1/181
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle steering device performs a tilt operation of a steering shaft to a predetermined position by using a driving force of a motor, a steering wheel being mounted to an upper end of the steering shaft. The vehicle steering device includes: a tilt drive motor allows the steering shaft to move during the tilt operation; and a control unit which controls driving of the tilt drive motor. The control unit drives the tilt drive motor so as to determine a tilt displacement amount from an open loop transfer function of a mechanical system which takes inertia and viscosity of a steering column into consideration, based on a resultant force of torque of the tilt drive motor and steering torque, which is generated in the steering column in which the steering shaft is rotatably supported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.