Implementation of a PID Type Sliding-Mode Controller Design Based on Fractional Order Calculus for Industrial Process System

Kagan Koray Ayten,Ahmet Dumlu

doi:10.5755/j02.eie.30306

Abstract

This paper is devoted to designing a fractional order Proportional Integral Derivative (PID) type sliding mode control method (FO-PIDSMC) for a non-linear liquid level coupled tank process system. By considering the individual advantages of the FO calculus and PID type SMC method, this proposed FO-PIDSMC technique is designed to integrate the FO calculus method with PID type SMC scheme to obtain an accurate and robust liquid level tracking in terms of the predefined reference trajectory. The real-time experimental results of the proposed controller suggest a dramatic improvement over the traditional process system controller methods in both trajectory tracking and required control action.

Highlights

In many industrial areas, the liquid level control between tanks is a crucial application, such as water distribution [1], biochemical [2], power generation, petrochemical processing [3], and so on
The FF-PIDSMC and the classical PI controller have been considered in terms of both tanks experimentally
The experimental results proved that the FOPIDSMC gives a remarkable real-time liquid level trajectory tracking performance during the experimental process

Summary

Introduction

The liquid level control between tanks is a crucial application, such as water distribution [1], biochemical [2], power generation, petrochemical processing [3], and so on. The flowmeter and pressure sensor can assist to obtain a liquid level for control applications This process system has a nonlinear behavior due to the dynamic parameter variations and pump-valve characteristics. The classical PID type controller methods are incapable to fulfil the demands of controlling high accurate liquid levels during the application due to the nonlinear behavior of the system. For this purpose, many nonlinear control algorithms have been performed to control this type of system. To solve the problems mentioned above and to provide high precision liquid level control, a nonlinear control method should be used

Methods

Results

Conclusion