Fuzzy logic control method for deployment of inflatable restraints
US6662092B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2000 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R21/013
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved control for the deployment of individual stages of a vehicle inflatable restraint during a crash event utilizes a fuzzy logic control to determine the crash severity, and a deployment control algorithm to control deployment of the restraints based on the determined crash severity and the elapsed time. In a preferred implementation, the crash severity is not determined until the measured acceleration and the corresponding change in velocity exceed respective thresholds, and a prediction of occupant movement due to the measured acceleration exceeds a threshold. Once the respective thresholds are exceeded, the fuzzy logic control is initiated to determine the crash severity, and the deployment control algorithm determines whether to deploy individual stages of the restraint based on comparisons of the determined crash severity and the elapsed time with respective thresholds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.