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초록· 키워드

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In today's vehicle structure design, an intensive requirement for occupant safety has to be considered. In order to acquire good points from NCAP requirement, the vehicle structure of the crush zone has to be designed to have a good energy absorption characteristic while avoiding any nonlinear local deformation. On the other hand, the passenger compartment should have an enough stiffiness to endure an intrusion against occupants. Furthermore, a recent market trend asks for vehicle safety requirements against a high-speed offset barrier crash such as EU Directive 96/97 EC, IIHS offset test Therefore, vehicle crush zone is sometimes needed to be reinforced by adding sub-frame in order to avoid an excessive deformation. That kind of vehicle structure design trend results in a relatively monotonic crash pulse at non-crush zone sensor, which might cause a poor crash discrimination between fire and no-fire events.
In this paper, we introduce a crash discrimination algorithm using electronic dual-axis accelerometer in order to enhance the robustness of algorithm performance. The proposed method uses a crash signal in lateral direction(Y-axis) as well as in longitudinal direction(X-axis). A crash severity measure obtained from Y-axis signal is used to improve the discrimination between fire and no-fire events. The result using the proposed measure shal1 be logically ORed n1th the result from X-axis algorithm part Simulation and pulse injection tests have been conducted to vcri1Y the performance of proposed algorithm by using real crash data of 2,000cc passenger vehicle.

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ABSTRACT

1.서론

2.전자식 이축 가속도 센서

3.충돌 유형에 따른 가속도 신호 분석

4.이축 감지 알고리즘(Dual-Axis Sensing(DAS) Algoritym)

5.전산 모의 실험

6.검증 시험

7.결론

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UCI(KEPA) : I410-ECN-0101-2009-556-014010251