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The objective evaluation of driveability character in the vehicle development process~Reduced time to market and increased driving pleasure
Published July 13, 1999 by Society of Automotive Engineers of Japan in Japan
The paper describes a new technology for the objective evaluation of the driveability character of passenger cars. More than 270 driveability criteria have been defined from a series of tests with different drivers and vehicles, including character definitions such as sporty, comfortable, spontaneity. The objective evaluations are derived from subjective assessments correlated with objective vehicle data by the use of neural networks. The methodology was implemented in the real-time driveability evaluation system AVL-DRIVE for vehicle and laboratory use. Typical applications are R&D and calibration, quality tests and measurement of development progress. A common language is defined for management, vehicle and testbed engineers. Vehicle driveability prediction in the laboratory is one missing link for an effective ""Road-to-Rig'''' philosophy and for automatic calibration. Repeated work on dyno and vehicle can be reduced and better results for fuel economy, emissions and driveability can be achieved. The calculated vehicle character can be used for a customer group specific calibration and for new distinguishing characteristics. This new type of drivability design increases the driving satisfaction and the identification of the driver with his vehicle.