Automatic control system for a pipe’s inner surface coating

Abstract

Theoretical bases for controlling the application of coatings to the inner surface of pipes and other hollow products are considered based on the stabilization of the velocity of the coating material in the product cavity taking into account temperature and viscosity. The device makes it possible to automatically compensate for the variation in the coating thickness depending on temperature taking into account the characteristics of the used control equipment. The dependence of the coating thickness on temperature and material velocity is described. The system that implements the proposed method in the MATLAB + SIMULINK shell is simulated. The optimal values of the system gain and level sensor sensitivity that minimize the dynamic error of the control system are determined.