Journal ArticleDOI
Design and implementation of a Model-Free Fractional Order Intelligent PI Fractional Order Sliding Mode Controller for water level tank system.
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TLDR
In this article, a combination of three nonlinear control methods, namely Model Free Controller (MFC), Fractional-order Proportional Integral Integral Controller (FO-PIC), and Flexible Sliding Mode Controller (F-SMC), is presented.Abstract:
This paper presents a combination of three nonlinear control methods, namely Model free Controller (MFC), Fractional-order Proportional Integral Controller (FO-PIC) and Fractional-order Sliding Mode Controller (FO-SMC), which gives rise to the new MFC algorithm with the term MF-FOiPI-FOSMC called Model Free-Fractional Order Intelligent Proportional Integral-Fractional Order Sliding Mode Controller. The stability analysis of the closed loop system (CLS) and the attractiveness of the proposed method are established by Lyapunov theorem analysis. The validation of the MF-FOiPI-FOSMC is first presented by simulation results and then performed by experimental results on the water level tank system. In addition, the effectiveness and performance of the new proposed FOiPI-FOSMC strategy is proved by comparing it to other strategies such as the classical PI controller and intelligent proportional–integral controller (i-PI).read more
Citations
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Journal ArticleDOI
Construction and Evaluation of a Control Mechanism for Fuzzy Fractional-Order PID
TL;DR: In this article , a control mechanism for fuzzy fractional-order proportional integral derivatives was suggested (FFOPID) for real-time pressure control, and the performance of the controller was inspected under load disturbances and variations in set-point conditions.
Journal ArticleDOI
Design and Performance Analysis of Level Control Strategies in a Nonlinear Spherical Tank
TL;DR: In this article , different approaches are applied to classical control techniques and their results are analyzed for the level control of a spherical tank, while the transient response of the controllers, their performance indices for monitoring the reference value, the rejection of disturbances, the presence of parameter uncertainties and the effects of noise are analyzed.
Journal ArticleDOI
Two concurrent β - variable adaptive model-free controls of a seeded batch crystallizer
TL;DR: In this paper , a β-variable adaptive model-free control (β-AMFC) has been proposed to control a seeded batch adipic acid crystallization process to get a final unimodal crystal size distribution (CSD) within the required mean weight size.
References
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Remarks on fractional derivatives
Changpin Li,Weihua Deng +1 more
TL;DR: This paper further discusses the properties of three kinds of fractional derivatives: the Grunwald-Letnikov derivative, the Riemann-Liouville derivative and the Caputo derivative, and compares them with the classical derivative.
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Pritesh Shah,Sudhir Agashe +1 more
TL;DR: This review investigates its progress since the first reported use of control systems, covering the fractional PID proposed by Podlubny in 1994, and is presenting a state-of-the-art fractionalpid controller, incorporating the latest contributions in this field.
Journal ArticleDOI
Non-linear estimation is easy
TL;DR: Non-linear state estimation and some related topics like parametric estimation, fault diagnosis and perturbation attenuation are tackled here via a new methodology in numerical differentiation within the framework of differential algebra.