Parametric identification of the mathematical model of transient processes in tribosystems

Abstract

The parametric identification of the dynamic models of the tribosystem run-in process is performed. Expressions for determining the gain and time constants are obtained. It is shown that after their substitution in the solution of differential equations it is possible to simulate the processes of changing the wear rate and the coefficient of friction during run-in. The physical meaning of the gain and time constants is determined. Coefficient К1 determines the sensitivity of the tribosystem to the input effect, and consequently, the value «casting» wear rate and coefficient of friction during overtaking. Coefficient К2 determines the ability of tribotite to be worked on. Time constant Т1 – this time, which is necessary to stabilize the temperature gradient over the entire volume of triboelements taking into account their thermal diffusivity. Т2 – this is the time for which the structure of the surface and subsurface layers of the triboelements is rearranged, the processes of deformation and hardening.