Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Signal. The organization has 760 authors who have published 890 publications receiving 11811 citations.

Neck Biomechanical Responses with Active Head Restraints: Rear Barrier Tests with BioRID and Sled Tests with Hybrid III

Abstract: Active head restraints are being used to reduce the risk of whiplash in rear crashes. However, their evaluation in laboratory tests can vary depending on the injury criteria and test dummy. The objective of this study was to conduct barrier tests with BioRID and sled tests with Hybrid III to determine the most meaningful responses related to whiplash risks in real-world crashes. This study involved: (1) twenty-four rear barrier tests of the Saab 9000, 900, 9-3 and 9-5 with two fully instrumented BioRID dummies placed in the front or rear seats and exposed to 24 and 48.3 km/h barrier impacts, and (2) twenty rear sled tests at 5-38 km/h delta V in three series with conventional, modified and SAHR seats using the Hybrid III dummy. A new target superposition method was used to track head displacement and rotation with respect to T1. Insurance data on whiplash claims was compared to the dummy responses. NIC is not a sufficient criterion to assess whiplash because it does not consistently correlate with seat performance in field crashes and its peak can occur at head restraint contact before the primary neck loads and displacements. Clear response differences were seen with head rotation and x-displacement with respect to T1 among the various seats and rear delta Vs. These responses describe neck kinematics in extension and flexion, and address many of the possible whiplash injury mechanisms. A Neck Displacement Criterion (NDC) is proposed to supplement other criteria until there is a clearer understanding of whiplash injury criteria. It is based on the displacement and rotation of OC-T1 and comparison to the natural range of motion. Responses are viewed in cross-plots of rotation vs x-displacement and zvs x-displacement of OC with respect to T

A device for gauging the level of a fluid.

Abstract: On decrit un dispositif permettant de jauger le niveau d'un fluide dans un recipient. Describes a device for gauging the level of a fluid in a container. Le dispositif comprend un emetteur servant a emettre, a travers une premiere section de guide d'ondes, un signal en hyperfrequence pouvant etre polarise, un recepteur servant a recevoir un signal en hyperfrequence reflechi, une unite electronique determinant la position reflechie du signal en hyperfrequence reflechi, et une antenne comprenant une seconde section de guide d'ondes. Device comprises a transmitter for the transmitting, through a first section of waveguide, a microwave signal can be polarized, a receiver for receiving a reflected microwave signal, an electronic unit determining the position of the reflected microwave signal thoughtful, and an antenna including a second section of the waveguide. Le dispositif se caracterise principalement en ce que l'emetteur et le recepteur transmettent et recoivent chacun respectivement un mode de guide d'onde, ces modes etant reciproquement orthogonaux, et en ce qu'une troisieme section de guide d'ondes (6, 16, 17) est introduite entre la premiere (2) et la seconde (5) section de guide d'ondes et est pourvue d'elements (12, 14, 15, 22) de polarisation et/ou d'amortissement permettant l'adaptation optimale du dispositif a differents recipients et antennes. The device is mainly characterized in that the transmitter and receiver respectively transmit and receive each a waveguide mode, these modes being mutually orthogonal, and in that a third section of the waveguide (6, 16 17) is inserted between the first (2) and the second (5) waveguide section and is provided with elements (12, 14, 15, 22) of polarization and / or damping for adaptation optimal device to different containers and antennas.

Method to join end fittings in a pressure vessel and pressure vessels fabricated according to the method

Abstract: A pressure vessel of composite material built up by fiber wound around an elongated hollow body having at least one end fitting with an axially extending peripheral surface which has a plurality of protrusions distributed over the surface with portions of the fiber material passing over the end fitting and applied around the protrusions as to be peripherally and axially distributed thereover and molded into the composite material. The pressure vessel may also include two end fittings with different radii with the body having on an axially limited portion thereof radially extending pin-like protrusions distributed around its circumference with the fibers being wound in different directions relative to the axis on opposite sides of the protrusions with the directions being adapted to the radii of the end fittings.

Multiple model algorithm based on particle filters for ground target tracking

Abstract: In this paper a novel multiple model particle filter algorithm for tracking ground targets on constrained paths is developed The algorithm is designed to let the different modes be represented by constrained likelihood models, whereas the state dynamics are the same for all models. The mixing procedure is performed over the likelihood models and the mixing parameters are calculated in a standard interacting multiple model (IMM) manner. The performance of the developed estimator is compared with several other multiple model particle filters in a Monte Carlo simulation study. A ground target scenario consisting of road networks is used to evaluate the behaviour of the tracking filters and to illustrate the selection of design parameters.

Energy-absorbing device for vehicle seat

Abstract: A fixture device is provided for the deformation component (12). The fixture device in the deformation component has an opening through which for fixture of the deformation component (12) in the vehicle seat (1) a fixture component is fitted. The opening for the fixture component for absorption of energy, particularly in the event of a collision from behind, is located in the upper part of the deformation component (12). The deformation area is a solid body of deformable material. It is surrounded by a reinforcing outer wall.