Implementation of a Globally Linearised Controller in Real Time for Two Conical Tanks Interacting Level Process

Abstract

The aim of this paper focuses on the design and real-time implementation of a Globally Linearized Controller (GLC) for Two Conical Tanks Interacting Level Process (TCTILP) that exhibits severe non-linear characteristics. Because of its adequate mixing and drainage properties, conical tanks are favoured in the industrial sector, yet control issues arising from their non-linear dynamics are considerable. This method's underlying premise is that a system with non-linear original variables can be transformed in some way to make it linear. The globally linearized controller is designed based on a linear model that accurately represents the entire operating range of a non-linear system, allowing for the practical application of linear control methods to achieve desired system performance. The fundamental dynamics and interactions between the two tanks are captured in a mathematical model of the TCTILP process. For various set points of levels h1 and h2, the performance of the GLC is contrasted with that of the traditional PI controller. According to real-time findings, GLC works better with shorter settling times and smaller error indices than conventional controllers. This work enhances process control by offering a workable and effective method for handling intricate non-linear systems. The robustness and versatility of the globally linearized controller make it an invaluable tool for a wide range of industrial applications requiring conical tank processes.