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Distributed cooperative control of autonomous multi-agent UAV systems using smooth control

Journal of Systems Engineering and Electronics 2020年第6期31卷 1297-1307页

作者： BELKACEM Kada munawar khalid MUHAMMAD Shafique Shaikh Department of Aerospace Engineering King Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Electrical and Computer Engineering King Abdulaziz UniversityJeddah 21589Saudi Arabia

This paper addresses the cooperative control problem of multiple unmanned aerial vehicles(multi-UAV)***,a new distributed consensus algorithm for second-order nonlinear multi-agent systems(MAS)is formulated under the leader-following *** algorithm provides smooth input signals to the agents’control channels,which avoids the chattering effect generated by the conventional sliding mode-based control ***,a new formation control scheme is developed by integrating smooth distributed consensus control protocols into the geometric pattern model to achieve three-dimensional formation *** Lyapunov theory is used to prove the stability and convergence of both distributed consensus and formation *** effectiveness of the proposed algorithms is demonstrated through simulation results.

关键词： cooperative control distributed consensus three-dimensional formation control multiple-UAV system

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Construction of robust and durable Cu_(2)Se-V_(2)O_(5) nanosheet electrocatalyst for alkaline oxygen evolution reaction

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Frontiers of Chemical Science and Engineering 2024年第6期18卷 71-83页

作者： Tauseef munawar Ambreen Bashir khalid Mujasam Batoo Saman Fatima Faisal Mukhtar Sajjad Hussain Sumaira Manzoor Muhammad Naeem Ashiq Shoukat Alim Khan Muammer Koc Faisal Iqbal Institute of Physics The Islamia University of BahawalpurBahawalpur 63100Pakistan King Abdullah Institute for Nanotechnology King Saud UniversityRiyadh 11451Saudi Arabia Hybrid Materials Center(HMC) Sejong UniversitySeoul 05006Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea Institute of Chemical Sciences Bahauddin Zakariya UniversityMultan 60800Pakistan Division of Sustainable Development College of Science and EngineeringHamad Bin Khalifa UniversityQatar FoundationDoha 34110Qatar

Reducing the production costs of clean energy carriers such as hydrogen through scalable water electrolysis is a potential solution for advancing the hydrogen *** the various material candidates,our group demonstrated transition-metal-based materials with tunable electronic characteristics,various phases,and ***,electrochemical water oxidation using Cu_(2)Se-V_(2)O_(5) as a non-precious metallic electrocatalyst via a hydrothermal approach is *** water-splitting performance of all the fabricated electrocatalysts was evaluated after direct growth on a stainless-steel *** electrochemically tuned Cu_(2)Se-V_(2)O_(5) catalyst exhibited a reduced overpotential of 128 mV and provided a reduced Tafel slope of 57 mV·dec^(−1) to meet the maximum current density of 250 mA·cm^(−2).The optimized strategy for interfacial coupling of the fabricated Cu_(2)Se-V_(2)O_(5) catalyst resulted in a porous structure with accessible active sites,which enabled adsorption of the intermediates and afforded an effective charge transfer rate for promoting the oxygen evolution ***,the combined effect of the catalyst components provided long-term stability for over 110 h in an alkaline solution,which makes the catalyst promising for large-scale practical *** aforementioned advantages of the composite catalyst overcome the limitations of low conductivity,agglomeration,and poor stability of the pure catalysts(Cu2Se and V2O5).

关键词： oxygen evolution reaction Cu_(2)Se-V_(2)O_(5)composite nanosheets metal-diffused ions accessible adsorption sites

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Characterization and Potential Evaluation of the Talhar Shale Gas Reservoir in the Lower Indus Basin, Pakistan

Characterization and Potential Evaluation of the Talhar Shal...

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2023年中国地球科学联合学术年会

作者： Muhammad Tahir Jamil Guozhong Gao Perveiz khalid Shamshad Akhtar Naveed munawar

To assess the unconventional shale gas reservoir potential of the Lower Indus Basin, particularly the Talhar Shale of the Lower Goru formation, Pakistan, various techniques, including elastic, geomechanical, petrophysical, and mineralogical analyses, are used. The study emphasizes key parameters such as the total organic carbon (TOC) content, and volume of kerogen, as they play a vital role in determining the shale gas reservoir potential.

关键词： Characterization and Potential Evaluation of the Talhar Shale Gas Reservoir in the Lower Indus Basin Pakistan

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