Electric power steering controller and control method thereof
US6450287B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0466
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric power steering controller including a motor for generating torque for assisting the steering torque of a driver to assist the steering force of a steering system. The controller includes a road reaction torque detector for detecting road reaction torque received by tires from the surface of a road, and a road detection torque addition control for controlling the torque of the motor based on the road reaction torque. The electric power steering controller enables the steering wheel to be returned to its starting point without adding torque in a direction in which the driver returns the steering wheel when the driver contgrols the steering wheel with the small road reaction torque of the tires, for example, when turning at an intersection at a low speed or when turning at a gently curved portion of a road at a high speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.