Rough road detection system
US7591170B2 · kind B2 · utility
8Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Apr 28, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W40/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rough road detection system includes an engine speed module, a feature space module, a normalization module, and a rough road module. The engine speed module generates an engine speed signal based on a crank signal. The feature space module generates a feature space signal based on the engine speed signal. The normalization module generates a normalized signal. The normalized signal is based on the feature space signal and a normalization value that varies in accordance with the engine speed signal. The rough road module determines whether a rough road condition exists based on the normalized signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.