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Global Asymptotic Control for Uncertain Stochastic Time-delay Systems with Unmodeled Dynamics
Qianjin Zhao,Shanshan Xiang,Xiaobo Li,Jian Wu 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.3
This paper considers the global adaptive regulation by dynamic partial state feedback method for a class of uncertain stochastic time-delay cascade system with asymmetric structure and nonlinear parameterization. The global asymptotic stability can be achieved under input-to-state stability (ISS) like the condition based on the zerodynamics with time delay. The partial state adaptive control scheme with a delay-independent has been developed by employing the adaptive feedback domination design. By constructing suitable Lyapunov-Krasovskii functionals, it is proven that all the states of the closed-loop system signals can be regulated to the origin. Meanwhile, the boundedness of the closed-loop system signals is kept. Simulation results further demonstrate the effectiveness of the proposed method.
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A Clustering Algorithm Based on Zone in Vehicular Ad Hoc Networks
Zhijun Yan,Yang Tao,Fangjin Zhao,QianJin He 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.12
Vehicular Ad Hoc Networks (VANET) is a wireless mobile ad hoc networks established on the inter-vehicle communication. Due to the special characteristics and the restrictions of roads, VANET shows characteristics of uneven nodes density, fast moving, high dynamic topology. So it is difficult to establish a stable link between nodes, and the reliability of data transmission declines rapidly with the increase of hops. Therefore, ensuring data reliability and rapid distribution is always a difficult point in the VANET research. Through analysis of vehicular ad hoc networks environment, we propose the node connectivity and the connectivity strength. By dividing the road environment into the segment area and the intersection area, respectively calculating and predicting the connectivity according to the road environment, we propose the zone based adaptive clustering algorithm (ZACA).
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