Electric power steering apparatus
US6148949A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1998 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jul 31, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D6/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Electric power steering apparatus includes a control unit for setting a motor control signal to control operation of an electric power assisting motor on the basis of at least steering torque detected by a steering torque sensor and a vehicle velocity detected by a vehicle velocity sensor. The control unit includes a steering torque estimating section for estimating the steering torque on the basis of the vehicle velocity detected by the vehicle velocity sensor and a steering angle detected by a steering angle sensor. When the steering torque sensor is out of order or malfunctioned, the control unit controls the operation of the electric motor on the basis of the steering torque estimated by the steering torque estimating section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.