Determination the yaw moment of inertia of an SUV in laboratory conditions

Abstract

The vehicle oscillates in different planes relative to the three axes while driving. Especially important are the turns of the vehicle by dint of steered wheels. During such highspeed turns, the vehicle is subjected to additional charges of various systems, including the control system. Therefore, in the calculations of the control system of the vehicle, it is necessary to take into account the inertial mass of the vehicle. In general, the inertial characteristics of some solid body during its rotation are determined by the moments of inertia of this body. The moment of inertia of a solid body concerning the axis of rotation is simply the mass times the square of the perpendicular distance to the rotation axis. To test the results obtained by means of the analytical method, it is necessary to determine the moment of inertia of a vehicle in an experimental way. A convenient method of measuring the moment of inertia of a vehicle can be the method of torsional vibrations. The moment of inertia of a vehicle was determined using special equipment, which was constructed in the laboratory of the Department of Motor Vehicles of the National Transport University.