Merenje parametara kretanja vozila bez žiroskopski stabilisanih platformi / Measurement of vehicle parameters of motion without gyro-stabilized platforms

• Main Author: Miroslav Demić
• Format: Article
• Language: English
• Published: University of Defence in Belgrade 2007-01-01
• Series: Vojnotehnički Glasnik
• Subjects: motorno vozilo; parametri kretanja vozila; položaj težišta vozila; merenje parametara kretanja vozila; vehicle; vehicle motion parameters; position of vehicle C.G.; measurement of vehicle motion parameters
• Online Access: http://scindeks.ceon.rs/Article.aspx?artid=0042-84690701011D

Prostorni položaj težišta vozila i rotacije karoserije značajni su za analizu dinamike, ponašanje na putu, oscilatornu udobnost vozila, bezbedno odvijanje saobraćaja i sl. Pomenuti parametri se u fazi projektovanja vozila određuju metodama dinamičke simulacije, a kod izvedenih vozila merenjima u stvarnim eksploatacionim uslovima. Problem koji je u ovom radu razmotren odnosi se na praktična merenja parametara kretanja vozila. Naime, translatorne koordinate težišta vozila se, uobičajeno, utvrđuju na osnovu registrovanih linearnih ubrzanja težišta vozila (koja se kasnije, jednom ili dva puta, integrale radi izračunavanja brzine ili pomeranja), a uglovi rotacije karoserije se najčešće, mere žiroskopski stabilisanim platformama. Problem koji se pri tome javlja je cena pomenutih platformi (do sto hiljada evra), pa je retko koja institucija njima opremljena. U ovom radu nastojano je da se utvrde parametri kretanja vozila na osnovu šest registrovanih linearnih ubrzanja karakterističnih tačaka vozila. / Spatial position of vehicle C.G. as well as angular parameters of body rotation are of major importance for analysis of vehicle dynamics, handling vibrational comfort, safe service in traffic etc. The mentioned parameters are determined by use of methods of dynamic simulation in phase of development, and by means of test measurement for vehicles in real service conditions. The problem that is to be taken into consideration here is related to practical measurement of vehicle motion parameters. Translational coordinates of vehicle C.G. are usually measured on the basis of registered linear accelerations of vehicle C.G. (once or twice integrated later, for calculation of displacement or velocity) and body angles are usually measured on gyroscope-stabilized platforms. The problem which occurs in these cases is the platform price (up to 100.000 EUR), not easily affordable for researchers. This paper attempts to determine vehicle motion parameters on the ground of six registered linear accelerations of specific body spots.