Study and Manipulate the Effects of Constant Time Delay in Networked Control Systems

Abstract

Time delay negatively affects the performance of the Networked Control Systems and leads to vibration and instability in the control response, and time delay may be Constant, Variable, or even randomly. In this research, the effect of Constant time delay on the stability of the Networked Control Systems using the optimized controller has been studied. That, the stability of the electrical power system for three synchronous generators taking account the Constatnt Time Delay has been studied between its subsystems. Computer simulations using the MATLAB program showed improvements in the stability of the electrical power system and a decrease significantly in the vibration of the overall state variables. The results were compared in the open loop and in the closed loop without time delay using the optimized controller and with the presence of time delay, and it was found that the optimized controller is able to improve the stability of Networked Control System within a specific range of constant time delay.