Motor driven power steering system and method of controlling the same
US10093347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Dec 13, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D15/021
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A motor driven power steering system may include: a steering angle sensor configured to sense a steering angle of a steering wheel; a motor current sensor configured to sense a current of a motor; an encoder configured to sense a position of the motor; a vehicle speed sensor configured to sense a speed of a vehicle; a virtual torque estimation unit configured to estimate, when an error of a torque sensor is detected, a virtual torque using the position of the motor, the steering angle of the steering wheel, and the current of the motor; and an assist torque calculation unit configured to calculate an assist torque for operation of the motor using the steering angle of the steering wheel, the speed of the vehicle, and the virtual torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.