Electric power steering system
US8684129B2 · kind B2 · utility
2Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2010 |
| Grant date | Apr 1, 2014 |
| Priority date | — |
| Expiry date | Jul 4, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/046
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A controller applies slight rotational torque to a drive gear of a reduction mechanism also in a predetermined range in which a motor does not produce any steering operation assist force. That is, the motor is caused to produce slight rotational torque not enough to drive a driven gear, and the rotational torque direction is reversed under a given condition. Accordingly, a backlash between the drive gear and the driven gear is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.