The synthesis of the air pressure control algorithm in the tires taking into account parameters of the dynamic system suspension hull wheeled vehicles with a large cross

Abstract

The subject matter of the article is the processes of changing the air pressure in the tires of the wheeled vehicle, depending on the microprofile of the road surface. The goal of the study is to analyze the main tire pressure control systems and their composition; choice of variants of the optimal law for changing the tire pressure in conditions of improvement of the parameters of the dynamic system suspension hull wheeled vehicles in real conditions. The tasks to be solved are: to carry out an analysis of the characteristics of the use of a wheeled vehicle in various road conditions; to make an overview of the systems of air pressure control in tires and their development; to estimate the connection of the parameters of the dynamic system suspension hull wheeled vehicles and air pressure in the tires of the wheeled vehicle; to develop an algorithm for controlling the rate of pressure change in an automated control system. The following results are obtained. The obtained analytical dependence of the amount of dynamic movement of a shock absorber on the speed of pressure change in the air system, which is the basis of the algorithm for adjusting air pressure in tires of a wheeled vehicle, allows taking maximum into account the speed of the suspension reaction to change the microprofile of the terrain. The methodological basis of the research were general scientific and special methods of scientific knowledge. Namely, the theoretical principles of analytical mechanics ‒ Lagrange's equations in generalized coordinates were used to describe the perturbed motion of suspension hull wheeled vehicles and creation of mathematical model; comparative analysis of existing systems control the air pressure in the tires and the analysis of their development was the basis for the synthesis of the control algorithm of the air pressure in the tires of the wheeled vehicles with a large cross. Conclusions. Determination of the analytical dependencies of the parameters of the dynamic system suspension hull wheeled vehicles and air pressure in tires makes it possible to develop an effective algorithm for controlling the speed of change in pressure. Developing an algorithm for changing the air pressure in tires in an automated control system will allow the driver and his passengers to travel more comfortably on the vehicle, regardless of the state of the roads or their absence; extends the tire run to breakdown, shortens compressor operating time under load; will reduce the power consumed by the engine on the actuator of the auxiliary equipment.