Active Control of Vehicle Occupant’s Motion in Front- and Rear- End Collisions

Habib, Mostafa S.

doi:10.4271/2001-01-3430

Cited by 6 publications

(7 citation statements)

References 2 publications

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“…1. Although this class of restraint systems are not yet available in today's passenger vehicles, numerical simulations with a controlled seat-belt and/or airbag showed that a significant injury reduction can indeed be achieved [8], [15], [7], [16]. Therefore, this class of systems will be a main focus of future restraint system development, and this paper contributes to this development.…”

Section: A Controlled Restraint Systemsmentioning

confidence: 99%

Reference governors for controlled belt restraint systems

Laan

Heemels

Luijten

et al. 2010

Vehicle System Dynamics

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Abstract-This paper presents a novel control strategy for real-time controlled restraint systems. Today's restraint systems typically include a number of airbags, and a three-point seat belt with load limiter and pretensioner. In the class of realtime controlled restraint systems, the restraint actuator settings are continuously manipulated during the crash. The control strategy developed here is based on reference management, in which a nonlinear device -a reference governor -is added to a primal closed loop controlled system. This governor determines an optimal setpoint in terms of injury reduction and constraint satisfaction by solving a constrained optimization problem. Prediction of the vehicle motion, required to predict future constraint violation, is included in the design and is based on linear regression of past crash data. Simulation results with a MADYMO model show that a significant injury reduction is possible, without prior knowledge of the crash. Furthermore, it is shown that the algorithms are sufficiently fast to be implemented on-line.

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Section: A Controlled Restraint Systemsmentioning

confidence: 99%

Reference governors for controlled belt restraint systems

Laan

Heemels

Luijten

et al. 2010

Vehicle System Dynamics

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“…In [11], active control of supplementary seat force is designed and tested with limited In this paper, a sliding surface controller is developed to actively control the seat force during frontal and rear 30MPH crashes. The controller is designed based on threedegrees of freedom nonlinear occupant model [13].…”

Section: Introductionmentioning

confidence: 99%

Vehicle Occupant’s Protection in Front- and Rear-end Collisions using Sliding Mode Control

Elsayed¹,

Habib²

2018

KEG

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“…In these studies, the occupant is seated and subject to a frontal crash, but unrestrained. The two-or three-mass models in [8], [18], [19] of the thorax interacting with a seat-belt in frontal impacts are too elementary and lacks accuracy. In the threebody model presented in [20], the potential of fully adaptive restraint systems is presented, but the belt system is not modeled.…”

Section: Vehicle Occupant Modelsmentioning

confidence: 99%

State Estimator Design for Real-time Controlled Restraint Systems

Laan

Veldpaus

Schie³

et al. 2007

2007 American Control Conference

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Abstract-In this paper, a method is presented to estimate the motion of a vehicle occupant in frontal impact. Knowledge of the occupant's motion during a crash can significantly reduce the risk of injury, as restraint systems could be real-time adapted to the optimal settings. It is shown that the chest acceleration of the occupant, an important measure of injury, is accurately estimated by filtering of the belt displacement at the retractor side. Low order, nonlinear models are constructed from complex models, and a state estimator filter is designed using a linearization of these low order models.

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Active Control of Vehicle Occupant’s Motion in Front- and Rear- End Collisions

Cited by 6 publications

References 2 publications

Reference governors for controlled belt restraint systems

Reference governors for controlled belt restraint systems

Vehicle Occupant’s Protection in Front- and Rear-end Collisions using Sliding Mode Control

State Estimator Design for Real-time Controlled Restraint Systems

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