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오늘 본 자료
Energy-Optimal Waypoint-Following Guidance for Gliding-Guided Projectiles
Qiulin Yin,Qi Chen,Zhongyuan Wang 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10
This paper addresses the problem of energy-optimal way-point-following guidance for Long-Range Gliding-Guided projectiles with the consideration of velocity variation. This proposed guidance law is derived as a solution of a linearized kinematics model. The algorithm integrates path planning and following into a single step and can be applied to a general waypoint-following mission. Nonlinear numerical simulations clearly demonstrate the effectiveness and superiority of the proposed formulations.
Lifeng Cui,Qiulin Zhang,Chaochuang Yin,Shifei Kang,Zhigang Ge,Qineng Xia,Yangang Wang,Xi Li 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.3
Water pollution caused by intensive use of organic dyes has become an increasingly serious problem recently. Green and efficient processes are desperately needed to remove persistent organic pollutants from waste waters. Herein, Ag nanoparticles loaded ZnO hollow microspheres were synthesized through a simple solvothermal method and used as a photocatalyst for dye degradation. The calculated band gap of Ag/ZnO — 5% (2.97 eV) is much narrower than that of pure ZnO (3.37 eV). The obtained Ag/ZnO samples show a remarkable photocatalytic activity in photodegradation of Rhodamine B (RhB) under simulated sunlight irradiation. The degradation efficiency of RhB for Ag/ZnO — 5% is 98.8% after 100 min irradiation while only 52.8% degradation rate is obtained over pure ZnO. The enhancement is attributed to the exposed active ZnO (001) plane and the surface plasmon resonance (SPR) effect of Ag nanoparticles that promote the separation of photogeneated electrons and holes.