MODELING AND RESEARCH CONTROL SYSTEMS WITH USING PID CONTROLLER

. Recently, digital technologies and software packages as MATLAB and MATCAD are widely used for modeling and research of control systems. When analyzing and synthesizing the control system, ”manual” operations do not allow one to cover fully the systematic approach both from the constructive and computational points of view. The most widely used in practice and at the same time simplest control device is the linear PID controller. However, computer modeling and digital studies of this controller are not at the required level. This paper reveals some features of the functioning of a linear digital PID controller with three settings on a 2nd order object. Considering these assumptions, in the paper, the object modeled in the terms of output and state variables and the known theoretical parameters occurring in the ACS with a PID controller are more adequately confirmed. For the experiments, the Matlab/Simulink system with the ”Simulink Response Optimization/Signal Constraint” package was used. In order to facilitate access to the package, some important features of the algorithm for solving the control problem are revealed using a specific example.