Steering apparatus controller for electric power steering apparatus
US6795762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0484
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A steering apparatus controller for an electric power steering apparatus, which includes an electric motor for generating assist torque for assisting steering of a steering wheel and the steering apparatus controller is designed to execute a feedback control of the applied drive voltage to the electric motor based on the detection result of the actual current that flows through the motor. A sensor detects the actual current to produce the detection result. When detecting an abnormal decrease of the drive voltage of the sensor, a voltage controller maintains the applied voltage to the electric motor at the voltage at a predetermined time before the drive voltage abnormally decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.