CONTROL SYSTEM BASED ON A CONTROLLER FOR CONTROLLING THE SPEED OF THE CARRIAGE OF THE BRICK MOULDING MACHINE
DOI:
https://doi.org/10.31649/2311-1429-2023-1-190-196Keywords:
hydraulic drive, controller, mathematical model, adjustable throttle, speed error, brick moulding machineAbstract
Today, when designing hydraulic systems, the use of controllers has increased significantly. One of the main reasons for
this growth is the need for precision management. To ensure the required movement speed, it is necessary to ensure a
proportional flow of liquid to the hydraulic drive. An urgent task in the design of such systems is the choice of the algorithm of
the controller to increase the accuracy of the hydraulic drive. The article analyzes studies devoted to the problem of using
controllers for the control system of the movement of the carriage of the unit for forming brick blanks. The scheme of the
installation for forming brick blanks with control from the controller was developed and the principle of its operation was
described. A mathematical model of the movement dynamics of the installation carriage with control from the controller was
made. The mathematical model is represented by a system of nonlinear differential equations solved by the Rosenbrock
method. The dependence of the voltage change at the output of the controller on time during the movement of the installation
carriage was presented in the form of a fractional-piecewise function and was divided into three sections. A simulation study
of the movement dynamics of the installation carriage was carried out in the MATLAB-Simulink environment. As a result, the
influence of each of the areas on the change in the speed of the carriage due to the change in the voltage at the output of the
controller is determined. The recommended ranges of changes in voltage values at the output of the controller in which the
error of the movement speed of the carriage and the clay bar will be equal to 0.71·10-3 m. The dependence of the speed on
the movement time of the carriage for the installation scheme with the use of the controller and without it was obtained. The
range of values of the voltage change at the output of the controller Ua, which ensures the aperiodic law of change of carriage
movement, was found. The magnitude of the error between the movement speeds of the installation carriage and the clay bar
for the installation scheme with and without the use of the controller was compared.
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