Method and apparatus for electronically cancelling a vehicle direction signal in an electric assist steering system
US5786754A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1995 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Dec 13, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/0235
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric assist steering system (10) includes a steering torque sensor (110) and an electric assist variable reluctance motor (26) operatively connected to a steering member. A motor control signal is provided in response to a value of the torque signal for control of the assist motor (26). Energization sequence of the assist motor is dependant upon the relative position of the motor rotor (38) with respect to the motor housing and stator (32). A motor position sensor (54) provides a rotor position signal to (i) a drive control circuit (150) controlling motor energization sequence, and (ii) turn signal control function (130). Turn signal control function (130) controls turn signal indicators (121) in response to the sensed motor position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.