INVESTIGATION OF MULTI-CONNECTED SYSTEM OF AUTOMATIC CONTROL WITH DELAY DECOMPOSITION METHOD
The problem of controlling objects with time delay is quite complicated. The presence of a delay in the control loop leads to an increase in the phase shift, which can provoke instability of the closed system, including in the presence of small gain factors of the regulator. The problem is get worse if the control object is multidimensional. In article investigates a multi-connected automatic control system separately and concurrently with delay in direct and cross communication channels. The estimation of the critical value of the delay on the basis of a systematic approach to the description of a multi-connected system in combination with frequency methods of stability analysis is proposed. The technique of estimation of the critical value of delay in direct and cross-links of a multi-connected automatic control system using the decomposition method is developed. Another problem solved in this article is to determine the stability of a multi-connected system with delay in subsystems and connections using a system approach to describe a multi-connected automatic control system through the characteristics of connections and characteristics of subsystems. In article presents examples that demonstrate the use of the proposed techniques and to find the critical value of the delay, and to assess the stability of the MCSAC. The results of the study were confirmed by simulation using MATLAB SIMULINK package.