Enhanced occupant spring mass model for use with an actuatable restraint system including compensating for monotonicity of misuse conditions
US6439007B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/474
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for switching the value of a spring constant K used in a spring mass model (54, 56, 60, 70, 76) for modeling a vehicle occupant in an occupant restraint system (20) includes a sensor (22) for sensing a crash event and providing a crash signal (40) indicative thereof. The spring mass model adjusts the acceleration signal and determines a virtual velocity value (72) and a virtual displacement value (78). The spring value K of the spring mass model is controlled in response to the determined virtual velocity value and the determined virtual displacement value relative to associated switching quadrants defined by predetermined velocity and displacement thresholds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.