Closed-loop identification of the first order inertial system with astatism and time delay

Abstract

The mathematical model that accurately represents the dynamics of the industrial process is crucial for the efficient synthesis of control algorithm in industrial applications. The mathematical model can be obtained using identification procedures, either in an open-loop or closed-loop configuration of the automatic control system. Identification methods in open-loop configuration are well known and typically yield accurate approximations of the process dynamics. However, in the closed-loop configuration, the presence of feedback in the system makes impossible to apply open-loop identification techniques directly. As a result, there are required specialized techniques and methods to accurately mathematical model estimation under closed-loop conditions.