Saab Automobile AB

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

Fahrzeugsteuersystem und Verfahren zu dessen Steuerung

Abstract: Fahrzeugsteuersystem (10), das zum Steuern einer Anzahl steuerbarer Kraftfahrzeuguntersysteme (30-80) ausgebildet ist, in Abhangigkeit von zumindest zwei voreingestellten Fahrzeugbetriebsarten, wobei das Steuersystem eine zentrale Steuereinheit (20) zum Steuern der Kraftfahrzeuguntersysteme (30-80) aufweist, und eine Fahrerschnittstelle (90) mit einer Eingabeanordnung (92) und einer Ausgabeanordnung (94) zur Auswahl der Betriebsart, dadurch gekennzeichnet, dass es zumindest einen Sensor (100-130) zur Erfassung momentaner Betriebszustande aufweist, und dass die zentrale Steuereinheit (20) dazu ausgebildet ist, den Zugriff auf zumindest eine der voreingestellten Betriebsarten einzuschranken, in Reaktion auf einen Ausgangswert von zumindest einem Sensor (100-130).

Antenna for a radar level gauge

Abstract: An antenna for a radar-based level gauge useable for determining a filling level of a filling material contained in a container is disclosed. The antenna comprises a reflector, which is symmetric around a symmetry axis; and a feeder for feeding microwave signals to and from the reflector. The feeder is of an elongate, essentially cylindrical shape, with a longitudinal axis of said feeder essentially coinciding with said symmetry axis of the reflector, wherein said feeder comprises a ring-shaped radiation feeding area for transmitting electromagnetic radiation towards the reflector and for receiving reflected electromagnetic radiation. In a preferred embodiment, an abutment ring is arranged around the feeder, wherein at least one of the feeder and the abutment ring are movable in relation to each other in the axial direction of said feeder, whereby simple and effective cleaning of the feeder is rendered possible. A method for cleaning an antenna is also disclosed.

Performance analysis with confidence intervals for embedded software processes

Abstract: The choice of algorithms has a large impact on the performance of embedded real-time systems. Therefore, performance estimation of embedded software is vital in an early design phase. Consequently, high-level estimation techniques have been devised, but the accuracy of the estimations vary a lot depending on the algorithm and its context. We address this problem by proposing an estimation technique that both estimates the performance and computes the expected accuracy. The accuracy is used to provide a confidence interval to the estimated performance. The estimation framework presented in this paper has been crafted to fit with the MASCOT environment, but the underlying techniques can also be applied to other high-level design exploration frameworks.

Operations Intent and Effects Model

Abstract: Military missions in the 21st century are characterized by combinations of traditional symmetric conventional warfare, irregular warfare, and operations other than war.The inherent uncertainty in an actual mission and the variety of potential organizations (e.g. multi-agency, non-governmental, private volunteer, international, international corporations) from several countries that support the mission makes collaboration and co-ordination a key capability for command and control. The ability to communicate and automatically process intent and effects is vital in order for a commander to cooperate with other organizations and agencies and lead subordinates in such a way that the overall mission is completed in the best possible way, including exploitation of fleeting opportunities, i.e. enable for self-synchronization amongst teams and allow for subordinate initiatives. However, intent and effects are often absent in the current and forthcoming digitalized information models, and if intent and effects are present it is likely to be found that the representations are made as free-text fields based on natural language. However, such messages are very difficult to disambiguate, particularly for automated machine systems. The overall objective for the Operations Intent and Effects Model is to support operational and simulated systems by a conceptual intent and effects model and a formalism that is human and machine interpretable.

Longitudinal force distribution using quadratically constrained linear programming

Abstract: In this paper, a new method is presented for the optimisation of force distribution for combined traction/braking and cornering. In order to provide a general, simple and flexible problem formulation, the optimisation is addressed as a quadratically constrained linear programming (QCLP) problem. Apart from fast numerical solutions, different driveline configurations can be included in the QCLP problem in a very straightforward fashion. The optimisation of the distribution of the individual wheel forces using the quasi-steady-state assumption is known to be useful for the study of the influence of particular driveline configurations on the combined lateral and longitudinal grip envelope of a particular vehicle–driveline configuration. The addition of the QCLP problem formulation makes another powerful tool available to the vehicle dynamics analyst to perform such studies.