The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2002
Filed:
Nov. 28, 2000
Chek-Peng Foo, Ann Arbor, MI (US);
Paul Leo Sumner, Farmington Hills, MI (US);
Timothy Chester Wright, Ann Arbor, MI (US);
Kevin Daniel Weiss, Farmington Hills, MI (US);
Gustavo Andres Delfino, Miranda, VE;
TRW Inc., Lyndhurst, OH (US);
Abstract
An apparatus for switching the value of a spring constant K used in a spring mass model ( ) for modeling a vehicle occupant in an occupant restraint system ( ) includes a sensor ( ) for sensing a crash event and providing a crash signal ( ) indicative thereof. The spring mass model adjusts the acceleration signal and determines a virtual velocity value ( ) and a virtual displacement value ( ). 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.