Abstract: The present invention relates generally to a tester and related methods for testing vehicular safety restraint systems, and more particularly, to testers and related methods for testing airbag suppression systems. A tester or method for testing an airbag suppression system according to the invention simulates movement of a vehicle occupant into a suppression zone by causing an occupant model to move toward the suppression zone, wherein a generally rotational motion and a generally linear motion of the occupant model are independently controllable by a positioning assembly. A control assembly according to the invention is able to identify the actual position of the occupant model at the time the suppression system detects the occupant model entering the suppression zone. This position may be used to evaluate the performance of the suppression system.

Abstract: A method and system for estimating the amount of forward displacement undergone by a seat-belted occupant of a vehicle. A test dummy, representing the seat-belted occupant, is pivotably restrained at a first point with respect to a fixed frame of reference. A second point associated with the test dummy is subsequently subjected to a measurable amount of forward displacement with respect to the same frame of reference, causing the test dummy to lean or tilt forward. An amount of forward displacement that occurs at a third point on or adjacent to the test dummy is then estimated through the use of ratios.