Experimental Research of Dynamic Parameters of a Tire for Hil-Testing of Vehicle Active Safety Systems

Abstract

This publication presents the specialists’ experience of Nizhny Novgorod State Technical University n.a. R.E. Alekseev (NNSTU) in the field of studying the friction-rolling of an automobile wheel on an asphalt surface. Adequate mathematical reproduction of force reactions that occur in the contact patch plays a significant role in modeling vehicle dynamics. Since the fundamental description of this interaction is difficult, in engineering practice the empirical method has become popular, which consists in obtaining an experimental data array with its subsequent trigonometric approximation and systematization. NNSTU specialists have developed a test methodology and carried out full-scale tests using a specialized road tire trailer bench. The experiment was carried out on a dry asphalt pavement with a coefficient of adhesion of about 0.4–0.8 at an ambient temperature of 20 °С. The resulting array of experimental data is processed and presented in the form of a trigonometric digital model PAC 2002. The maximum discrepancy between theoretical and experimental data in absolute value doesn’t exceed 5 %.

Hardware-in-the-Loop Testing of Vehicle’s Electronic Stability Control System

“…The car tire was tested in 3 loaded states, namely the vertical force was 4000, 6000, and 8000 N, as the most characterizing tire's operating modes of the vehicle Gazelle Next. Coefficients D, Cp, Bp, and E, obtained from the results of processing field tests [26], are presented in Table 1.…”