Mathematical Modeling of Transient Processes in the Jet Pipe Servoactuator with a Dual-Mode Controller

This paper describes an electro-hydraulic servo-actuator using dual-mode controllers in the control loop. The aim is a null stationary error and the shortest possible time response. The mathematical model of the servo-actuator is constructed taking into account the functional model of the open-centre servo-valve. This model is used for the numerical simulation of the system functioning. The model uses mass flow ratios in order to obtain a more stable and realistic numerical simulation. The dynamic simulation studies the behavior of the servo-actuator with different controllers in the control loop. The model tests the proportional controller and types of programmable logic controllers. The controllers are implemented in MATLAB/SIMULINK. The controllers are tested by numerical simulation. One may assume the technical superiority of programmable logic controllers.