Electric power steering apparatus
US6131693A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Aug 26, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D6/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric power steering apparatus includes a control unit designed to be responsive to acceleration and deceleration of the vehicle and forward and revere movements of the vehicle for correcting a steering assist torque to be supplied from an electric motor to the steering system of a vehicle. The control unit includes an acceleration and deceleration calculating section, a front wheel load calculating section, a phase compensating section, a main control amount setting section and a damping correction value setting section. The acceleration and deceleration calculating section determines acceleration and deceleration on the basis of the direction and magnitude of a vehicle velocity detected by a vehicle velocity sensor. The front wheel load calculating section determines a front wheel load variation on the basis of the acceleration and deceleration. The phase compensating section perform phase compensation of a steering torque on the basis of the front wheel load variation. The main control amount setting section sets a main control amount on the basis of the phase-compensated torque and the vehicle velocity. The damping correction value setting section sets a damping correctio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.