Controller of electric power-steering system
US6326753A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jan 6, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/934
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A controller of an electric power steering system corrects a motor current command value by using a temperature of a motor, and compensates a variation in a motor current characteristic in accordance with a variation in the temperature. The controller includes a torque sensor for detecting a steering torque of a steering wheel; a motor for supplying a steering assist torque to a steering shaft integrally provided with the steering wheel; and a control unit for driving the motor in accordance with a magnitude of the steering torque. The control unit corrects a motor current command value in accordance with a temperature of the motor, and controls a motor current in accordance with the corrected motor current command value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.