SOLUŢII ÎN STUDIUL PERFORMANŢELOR DINAMICE ŞI ÎN TRAFIC ALE AUTOVEHICULELOR PRIN INTEGRAREA APLICAŢIILOR CAD/PLM ŞI GPS

Abstract

The design process is part of a product lifecycle, and this is reflected by integration of the CAD system in a PLM solution. The analysis of vehicle behaviour involves dynamic data acquisition, and a modern method consists in using GPS devices. Consequently, for the study of dynamic and in-traffic behaviour of automotive vehicles, were identified solutions that involve data acquisition using GPS devices and processing of these data in an integrated CAD/PLM system. These solutions are: an original data acquisition system based on GPS, hardware and software; a CAD application for GPS data processing, used to import and process data; a solution for integration of the results in a CAD/PLM system, consisting in an original C++ wrapper realised over an existing C library, and a client program for file transfer; applications for vehicle’s dynamic behaviour estimation, using the presented devices and methods: coast-down tests, acceleration and braking tests; applications for analysis of vehicle’s speed in urban traffic, using GPS devices and CAD software; an urban driving cycle proposed for Brasov city; a method, including a CAD software library, to analyse the influence of the vehicle’s speed on the road traffic noise.