scholarly journals Model-based Dynamic Fractional-order Sliding Mode Controller Design for Performance Analysis and Control of a Coupled Tank Liquid-level System

2020 ◽  
Vol 20 (3) ◽  
pp. 93-100
Author(s):  
H. T. SEKBAN ◽  
K. CAN ◽  
A. BASCI
Keyword(s):  
Performance Analysis ◽  
Fractional Order ◽  
Controller Design ◽  
Sliding Mode ◽  
Liquid Level ◽  
Sliding Mode Controller ◽  
Level System ◽  
Model Based ◽  
And Control

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

2021 ◽  
Vol 27 (6) ◽  
pp. 4-10
Author(s):  
Kagan Koray Ayten ◽  
Ahmet Dumlu
Keyword(s):  
Fractional Order ◽  
Control Method ◽  
Controller Design ◽  
Sliding Mode ◽  
Industrial Process ◽  
Liquid Level ◽  
Dramatic Improvement ◽  
Reference Trajectory ◽  
Process System ◽  
The Individual

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.

scholarly journals A non-integer sliding mode controller to stabilize fractional-order nonlinear systems

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Ahmadreza Haghighi ◽  
Roveida Ziaratban
Keyword(s):  
Fractional Order ◽  
Chaotic Systems ◽  
Control Method ◽  
Controller Design ◽  
Nonlinear Dynamical Systems ◽  
Sliding Mode ◽  
Slip Surface ◽  
Direct Method ◽  
Distributed Model ◽  
Sliding Mode Controller

Abstract In this study, we examine the stabilization of fractional-order chaotic nonlinear dynamical systems with model uncertainties and external disturbances. We used the sliding mode controller by a new approach for controlling and stabilization of these systems. In this research, we replaced a continuous function with the sign function in the controller design and the sliding surface to suppress chattering and undesirable vibration effects. The advantages of the proposed control method are rapid convergence to the equilibrium point, the absence of chattering and unwanted oscillations, high resistance to uncertainties, and the possibility of applying this method to most fractional order chaotic systems. We applied the direct method of Lyapunov stability theory and the frequency distributed model to prove the stability of the slip surface and closed loop system. Finally, we simulated this method on two commonly used and practical chaotic systems and presented the results.

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