Electric power steering device
US4753310A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1986 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Sep 17, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0463
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric power steering device for vehicles comprises an electric motor connected to a steering shaft and serving as a servomotor for producing assisting steering power. Torque sensors are adapted to sense steering torque on the steering shaft. A vehicle speed detecting means is adapted to detect the actual vehicle speed. A controller is adapted to control the state of energization of the electric motor such that the output torque of the motor is changed in accordance with the change in the steering torque on the steering shaft and that the energization of the motor is stopped when the actual vehicle speed is increased beyond a predetermined threshold speed which is adjustable by a vehicle speed setting means such as a variable resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.