Electric power steering apparatus
US7136732B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 27, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Aug 27, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0463
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric power steering apparatus transmits a driving force of an electric motor to a steering mechanism for steering assist. The apparatus includes a torque sensor which detects a steering wheel torque; a basic assist characteristic determining section which determines a basic assist characteristic defining a basic characteristic of a motor driving target value for the steering torque; a motor driving target value determining section which determines the motor driving target value for the steering torque in accordance with a modified assist characteristic prepared by shifting the basic assist characteristic along a steering torque coordinate axis; a shift amount determining section which determines the amount of the shift from the basic assist characteristic to the modified assist characteristic on the basis of the steering torque; and a motor driving section which drives the electric motor on the basis of the motor driving target value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.