Nonlinear simulation of electrohydraulic drive for technological equipment

Abstract

The problem of nonlinear simulation of the dynamic characteristics of the electrohydraulic servo drives with throttle regulation for technological equipment is considered. The mathematical model for investigation of the nonstationary work processes in the drives has developed. The model adapted for drives of the technological equipment, built using standard modules, in particular, an electrohydraulic amplifier and a hydraulic cylinder. The estimation of the basic parameters of the mathematical model is carried out using the technical certificate data of the drive devices. The recommendations are given on setting initial data for numerical simulation. For numerical integration of the nonlinear mathematical model of the nonstationary work processes software was developed in the environment of the MATLAB. In addition to the integration subroutine, the software includes a source data file, a control program and a subroutine for calculating the right parts of the system of ordinary differential equations. The example of the calculation of the dynamic characteristics for the electrohydraulic servo drive with throttle regulation is presented.