ДО ПИТАННЯ ЩОДО ДИНАМІЧНОГО СПОСОБУ УПРАВЛІННЯ АВТОМОБІЛЕМ

Volodymyr SAKHNO; Valery STELMASHCHUK; Vasyl ONYSHCHUK; Denis POPELYSH; Serhii TOMCHUK

doi:10.36910/automash.v2i13.98

Volodymyr SAKHNO Professor, Head of Automobiles Department, National Transport University https://orcid.org/0000-0002-5144-7131
Valery STELMASHCHUK associate professor of automobiles and transport technologies department, Lutsk National Technical University https://orcid.org/0000-0003-3813-3143
Vasyl ONYSHCHUK associate professor of automobiles and transport technologies department, Lutsk National Technical University https://orcid.org/0000-0002-5316-408X
Denis POPELYSH magistr of transport, postgradiate student of Automobiles Department, National Transport University https://orcid.org/0000-0001-9506-6421
Serhii TOMCHUK magistr of transport, postgradiate student of Automobiles Department, National Transport University https://orcid.org/0000-0001-5963-556X

DOI: https://doi.org/10.36910/automash.v2i13.98

Abstract

Turning wheeled cars can be done in three main ways, namely by changing the angles between the longitudinal axis and the plane of rotation of the steered wheels of the machine due to their rotation (kinematic method), changing the position of one part of the machine relative to another (articulated machines), changing the magnitude of the speeds of the wheels left and right). The latter method is similar to the method of rotating tracked vehicles and is called the onboard or dynamic method. Any of the above methods can be used in all-wheel drive (4WS).
To realize curvilinear movement in a dynamic way, a certain ratio of the angular velocities of the wheels of the different sides of the machine must be ensured. In this case, all-wheel-drive (4WS) double-axles have advantages over traditional two-wheel-drive (2WS) systems. It is established that the dynamic method of rotation at a fixed speed of rotation increase of torque on the inner wheel of the rear axle leads to a decrease in the radius of rotation of the car (improved maneuverability) and vice versa - an increase of torque on the outer wheel leads to the movement of the "crab" of the car (improves). However, taking into account the change in the steering angle of the steered wheels and the critical steering speed gives a slightly different result, with a minimum difference of torque on the rear axle wheels. This is explained by the fact that the change in the steering angle of the steered wheels and the critical speed of control with different intensity affect the amount of torque difference on the wheels of the rear axle of the car.
Keywords: car, all-wheel drive, driven wheels. moment, angle of rotation, maneuverability, stability.

To question on dynamic management of cars

Abstract