Since secondary safety systems have been implemented in modern cars successfully, the development of primary safety systems becomes more and more important. That causes the necessity of useful methods to estimate the benefit of these advanced safety systems. In this paper a new method for the benefit estimation of advanced safety systems by simulating real world crashes is presented. The bases of this simulation are real world crashes out of the GIDAS (German In-Depth Accident Study) database, including reconstruction data, accident sketches and safety systems specifications. The result of this method is a comparison between the simulated real accident scenario and the predicted accident scenario using a virtual prototype of the safety system. Using this comparison it is possible to estimate the benefit for the single case as well as the global benefit for all cases. The simulation will be done with a car dynamic simulation program. Therefore, interactions between sensor systems, brakes and steering controls can be considered. Furthermore, it is also possible to simulate crash involved cars with more than one safety system. The benefit will be estimated regarding accident avoidance and/or accident mitigation based on all available cases in GIDAS. Another possibility of such a simulation is to find out potentials of the further development of advanced safety systems or to develop new activating strategies by checking up parameters like yaw-angle, lateral acceleration or steering wheel angle. A method for the estimation of potential benefits of primary safety systems and exemplified results is outlined. The possibility of a dynamic simulation of real world accident initiations with and without virtual safety systems is considered. The results provide detailed information about useful combinations of advanced safety systems. The full text of this paper may be found at: http://www-nrd.nhtsa.dot.gov/pdf/esv/esv21/09-0162.pdf For the covering abstract see ITRD E145407.
Samenvatting