Control apparatus for motor-driven power-steering system of motor vehicle
US6799656B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Sep 21, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/049
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control apparatus for a motor-driven power steering system of a motor vehicle includes a steering angular information detecting means (16) for detecting steering angular information of a steering mechanism (3), a controller (10) for controlling a motor current on the basis of the steering angular information and magnitude and direction of a steering torque, an electric motor (7) operatively coupled to the steering mechanism (3) for generating a steering assist torque (Ta) corresponding to the motor current, the assist torque being applied to a steering wheel, a motor-rotational information detecting means (101) for detecting rotational information of the electric motor (7), and an abnormality decision means (17) designed to make decision that the steering angular information detecting means (16; 15) is abnormal when a difference between the steering angular information and the motor rotational information is not smaller than a reference value preset for comparison of both the information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.