Electric power steering control
US5668722A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0466
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric power steering control apparatus comprising a torque sensor coupled to a vehicle steering system for measuring steering wheel torque provided by a vehicle operator, a steering angle sensor coupled to the steering system for measuring steering wheel angle, a controller, responsive to the measured steering wheel torque and a vehicle speed, providing a sum return-to-center command, and a motor responsive to the sum return-to-center command, wherein the controller determines a low speed return-to-center command responsive to the measured steering wheel torque and a first predetermined function, determines a high speed return-to-center command responsive to the measured steering wheel torque and a second predetermined function and blends the low and high speed return-to-center commands to obtain the sum return-to-center command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.