Research Papers

Backstepping Control Design for Vehicle Active Restraint Systems

[+] Author and Article Information
Manohar Das

Department of Electrical and
Computer Engineering,
Oakland University,
Rochester, MI 48309-4401

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.

J. Dyn. Sys., Meas., Control 135(1), 011012 (Nov 07, 2012) (9 pages) Paper No: DS-10-1147; doi: 10.1115/1.4007549 History: Received June 01, 2010; Revised July 02, 2012

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.

© 2013 by ASME
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Fig. 1

A digital driver model

Grahic Jump Location
Fig. 2

A typical seat-belt restraint system

Grahic Jump Location
Fig. 3

A complete block diagram for the active restraint control system

Grahic Jump Location
Fig. 4

A digitized vehicle acceleration profile before/after a frontal impact at V = 45 mph

Grahic Jump Location
Fig. 5

The driver's dynamic motion after a frontal impact (left) and the three joint accelerations in a passive conventional seat-belt case at 45 mph (right)

Grahic Jump Location
Fig. 6

The three major joint accelerations (left) and control strain forces in an active seat-belt case at 45 mph (right)

Grahic Jump Location
Fig. 7

The controlled strain force acting on the chest through the upper belt in x and y directions (left) and a possible way to replace the upper belt by two shoulder soft rings to realize the bidirectional control (right)




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In