Doniyor Akhmedov - Public Safety University of the Republic of Uzbekistan, Tashkent, Uzbekistan
Davron Riskaliev - Tashkent State Transport University, Tashkent, Uzbekistan
 

Abstract: This study aims to achieve accurate simulation alignment with real-life road conditions for optimal training effectiveness. By investigating the tilt and displacement of the vehicle during manoeuvres, experiments establish a basis for configuring simulation parameters. The goal is to attain correlation with empirical observations and adjust the simulator's rational parameters accordingly. The study's specific aim is to determine these parameters and locate the optimal installation coordinates for the electric motor within the simulator structure.

Key words: simulator, adaptation, manoeuvres, rational parameters, electric motor, crankshaft and motion reducer.

Introduction: Optimising rational parameters in driving simulators is a critical pursuit that is essential for enhancing their efficacy in various applications, including driver training, research, and development. In order to improve the adaptation of the simulated scenarios displayed on the simulator monitor to the real road conditions, it is essential to elicit an appropriate response from the simulator [1,2,7,8]. For example, whilst performing manoeuvres on various routes, like ascending an overpass, the lorry adjusts its orientation with an angle α (Figure 1). Experimental studies have determined the values of tilt and displacement of the car on different paths [3,4,5]. In order to reproduce such phenomena, the rational parameters of the simulation have to be adapted to those derived from experimental data. 
The aim of this study is to determine the rational parameters of the simulator and the installation coordinates of the electric motor.
The main components of the simulator are shown in Figure 2. As shown, the electric motor (5) is connected to the worm gearbox (6). The crankshaft (1) is securely fixed to the shaft of the worm gear reducer by means of a key. The upper surfaces of the crankshaft (2) act as a connecting rod and are supported by means of ball bearings and a screw assembly. The upper part of the P-shaped upper surface accommodates a spherical bearing hinge (3), which is connected to the upper part by bolted ears and secured by a bolt. This hinge is in turn connected to the central platform (4) by a finger. This finger is mounted by a bolt. When activated, the simulator transmits motion from the engine to the motion reducer, causing the crankshaft (1) to rotate at a maximum speed of 1800 rpm. The Pshaped upper surface, which acts as a connecting rod, induces a complex movement in the crankshaft, which results in vertical oscillations or reciprocating movements in the central platform (4). The electronic frequency of the reducer of the electric motor is modulated in order to vary the frequency of the torque and the stop occurs when the upper part (2) of the crankshaft reaches its zenith (at 1800 revolutions).