Investigation of a Cruising Fixed Wing Mini Unmanned Aerial Vehicle Performance Optimization

Indonesian J. Sci. Technol

Hasan

et al. 2021

Self Cite

The rise of wing-rock motion in delta-wing aircraft has an adverse effect on the manoeuvrability of aircraft and it may result in its crash. This study presents a finite-time control design to tackle the dynamic motion due to the Wing-Rock effect in delta-wing aircraft. The control design is developed based on the methodology of Super Twisting Sliding Mode Control (STSMC). The Lyapunov stability analysis has been pursued to ensure asymptotic convergence of errors and to determine the finite time. The design of STSMC leads to the appearance of design parameters, which have a direct impact on the dynamic performance of the controlled system. To avoid the conventional tuning of these parameters and to have an optimal performance of the proposed controller, a modern optimization technique has been proposed based on Wale Optimization Algorithm. A comparison study between optimal and non-optimal finite-time super twisting sliding mode controllers has been established and their effectiveness has been verified via numerical simulation using MATLAB programming format.

Section: Introductionmentioning

confidence: 55%

Finite-Time Control of Wing-Rock Motion for Delta Wing Aircraft Based on Whale-Optimization Algorithm

Al-Qassar

Indonesian J. Sci. Technol

Hasan

et al. 2021

Self Cite

“…The lift and drag coefficients for the investigated wings are shown in figure 10. It is observed that the lift coefficient for configurations with a 7% span ratio is almost the same as the Alpine wing [16]. Also, it is observed that increasing the Alula span results in a gradual reduction in lift and this can be explained by the higher pressure generated between Alula and the wing surface.…”

Section: Alula Effectmentioning

confidence: 84%

Alula Effect on Aerodynamic Performance of Small UAVs Wing Configuration

Eftekhari

Mari

2023

J. Phys.: Conf. Ser.

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The application range of small UAVs for civil purposes such as aerial imaging, agricultural pest control and, corps management as well as drone delivery has been increasing throughout recent years. Promising results are observed from recent studies which support the effectiveness of the bio-inspired approach in improving the aerodynamic efficiency of small UAVs. However, very limited studies have investigated the effect of Alula on the aerodynamic performance of wing geometries. This research investigates the effects of employing Alula on the aerodynamic efficiency of the wing to overcome the challenge of small UAVs efficiency degradation. Numerical and experimental investigations are conducted on 6 different Alula configurations. The findings of the investigations shows a reduction in drag for wings and an increase in aerodynamic efficiency by 9% for wings with Alula compared to the conventional wing. It is observed that using Alula configuration helps in delaying flow separation by adding momentum into the flow which resulted in total drag reduction without having a significant effect on the lift. Consequently, the aerodynamic efficiency is increased, and this can be utilized in drone industry to increase the endurance of the flight.

“…Other techniques and methodologies can be pursued to extend this study for future work (Yung et al, 2016;Eftekhari & Al-Obaidi, 2019;Eftekhari et al, 2020;Kulshreshtha & Al-Obaidi, 2020;Al-Obaidi, 2021;Ali et al, 2020;Al-Obaidi, A. S. M. et al, 2021b;Eftekhari et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Active Disturbance Rejection Control of Wearable Lower-Limb System Based on Reduced ESO

Alawad

Humaidi

Indonesian J. Sci. Technol

et al. 2022

Wearable robots are commonly used for rehabilitation and they are made to fit the human body to assist persons who are unable to help themselves. The design of controllers became necessary to enhance the dynamic motion of these exoskeleton systems when worn by patients. In this study, active disturbance rejection control (ADRC) with reduced-order extended state observer (RESO) has been proposed for motion control of exoskeleton knee-assisting device to eliminate the phase lag induced by full-order extended state observer (FESO). The design analysis of RESO-based ADRC has been presented and a computer simulation has been conducted to verify the effectiveness of the proposed controller. A comparison study has been made between ADRC based on RESO and that based on FESO in terms of transient and robustness characteristics. The simulated results showed that the RESO-based ADRC gives better transient and load rejection capabilities compared to the controller with FESO.