System Identification for Interacting and Non-Interacting Tank Systems Using Genetic Algorithm

Abstract

System identification from the experimental data plays a vital role for model based controller design. Derivation of process model from first principles is often difficult due to its complexity. The first stage in the development of any control and monitoring system is the identification and modeling of the system. Each model is developed within the context of a specific control problem. Thus, the need for a general system identification framework is warranted. The proposed framework should be able to adapt and emphasize different properties based on the control objective and the nature of the behavior of the system. Therefore, system identification has been a valuable tool in identifying the model of the system based on the input and output data for the design of the controller. The present work is concerned with the identification of transfer function models using statistical model identification, process reaction curve method, ARX model and genetic algorithm for interacting and non interacting tank process. The identification technique used is prone to parameter change & disturbance. The proposed methods are used for identifying the mathematical model of interacting and non interacting process from the real time experimental data.