Active control of vehicle restraint systems has been extensively investigated in past decades. Many promising results have shown that a seat-belt system can be controlled in real-time to minimize human driver/occupant's injuries by reducing the human chest acceleration after a frontal impact. This paper presents a new nonlinear model that groups the seat-belt restraint system and the human driver's nonlinear high-coupling dynamics together to form a cascaded system. By using a backstepping design procedure, a global control law is developed and aimed to actively and continuously adjust the seat-belt strain force so as to interact both the human's shoulder/chest and waist. Both the control theory development and 3D graphical simulation study show that the overall system stability is well achieved. Even if up to a freeway speed, such as at 65 mph, the accelerations of the three major human body joints: lumber, thorax, and neck after a frontal collision can still be reduced significantly.
Backstepping Control Design for Vehicle Active Restraint Systems
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received June 1, 2010; final manuscript received July 2, 2012; published online November 7, 2012. Assoc. Editor: Swaroop Darbha.
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Gu, E. Y., and Das, M. (November 7, 2012). "Backstepping Control Design for Vehicle Active Restraint Systems." ASME. J. Dyn. Sys., Meas., Control. January 2013; 135(1): 011012. https://doi.org/10.1115/1.4007549
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