Automatic Control System of an Oil Pressure Regulator for Hydraulic Press Assembly of Interference Fits

Abstract

In this paper a proportional regulator based automatic control system of an oil pressure regulator is presented. The functional diagram, compiled according to the initial data about the technological equipment used in the studied pressure regulator and the regulator control flow chart is also presented. The results of experimental tests of the pressure regulator using the proposed control algorithm performed to determine the optimum boundaries of the dead zone (the region in which changes in the controlled pressure do not cause any regulating action) based on the stability of the system with a minimum static error are given. The proposed control system allows the pressure regulator to maintain the value of the oil pressure in the required range. The process of automated hydraulic press assembly is guaranteed to be carried out in the mode of liquid friction, realizing the advantages of this technology, namely, the preservation of the mating surfaces and the strength of the connection.