نتایج جستجو برای: robust fractional order control

تعداد نتایج: 2330621  

This paper deals with a ratio-dependent functional response predator-prey model with a fractional order derivative. The ratio-dependent models are very interesting, since they expose neither the paradox of enrichment nor the biological control paradox. We study the local stability of equilibria of the original system and its discretized counterpart. We show that the discretized system, which is...

2017
Khatir Khettab Yassine Bensafia Samir Ladaci Mohamed Boudiaf

In this paper, a Fractional Adaptive Fuzzy Logic Control (FAFLC) strategy based on active fractional sliding mode (FSM) theory is considered to synchronize chaotic fractional-order systems. Takagi-Sugeno fuzzy systems are used to estimate the plant dynamics represented by unknown fractional order functions. One of the main contributions in this work is to combine an adaptive fractional order PI...

Journal: :Journal of physics 2023

The coupling disturbance between the manipulator and unmanned aerial vehicle (UAV) deteriorates control performance of system. To get high manipulator, a robust fractional order fast terminal sliding mode (FOFTSMC) strategy based on mutable inertia parameters is proposed in this paper. First, dynamics with consideration derived by utilizing parameters. Then, dynamic model, FOFTSMC algorithm des...

2003
MANUEL F. SILVA J. A. T. MACHADO A. M. LOPES

This paper studies the performance of integer and fractional order controllers in a hexapod robot with joints at the legs having viscous friction and flexibility. For that objective the robot prescribed motion is characterized in terms of several locomotion variables. The walking performance is analysed through the Nyquist stability criterion and several indices that reflect the system dynamica...

2003
N. M. Fonseca Ferreira J. A. Tenreiro Machado

This paper presents the implementation of fractionalorder algorithms in the position/force hybrid control of robotic manipulators. The system performance and robustness is analyzed in the time and frequency domains. The effect of dynamic backlash and flexibility is also investigated.

2012
P. Melchior B. Metoui A. Oustaloup

In path planning, potential fields introduce force constraints to ensure curvature continuity of trajectories and thus to facilitate path-tracking design. In previous works, a path planning design by fractional (or non integer or generalized) repulsive potential has been developed to avoid fixed obstacles: danger level of each obstacle was characterized by the fractional order of differentiatio...

This paper proposes an optimized control policy over type one diabetes. Type one diabetes is taken into consideration as a nonlinear model (Augmented Minimal Model), which is implemented in MATLAB-SIMULINK. This Model is developed in consideration of the patient's conditions. There are some uncertainties in the regarded model due to factors such as blood glucose concentration, daily meals or su...

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