Continuous estimation of surface friction coefficient based on EPS and vehicle models
US9845109B2 · kind B2 · utility
13Cited by
0References
18Claims
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Assignee
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Key dates
| Filing date | Mar 22, 2016 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Mar 22, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D6/006
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and a method of controlling a power steering system of a vehicle are provided. A control system includes a control module operable to determine a rack force of the vehicle based on at least one of a motor velocity, a driver torque and a motor torque, determine a plurality of modeled rack forces based on a roadwheel angle and a vehicle speed, compare the rack force to the plurality of modeled rack forces to generate a friction level included in a control signal, and send the control signal to the power steering system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.