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Adaptive Variable Impulsive Synchronization of Multi‑agent Systems
Like Gao,Jing Xiao,Xiaoxuan Guo,Shifeng Ou,Yangjun Zhou,Ning Wu,Yubin Feng,Zhiyang Yao 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.1
This paper is concerned with the adaptive synchronization of multi-agent systems via variable impulsive control method. Based on the theory of impulsive diferential equations, adaptive control technique, Lyapunov stability theory and comparison system method, some novel adaptive synchronization conditions with impulsive time window are given to realize the synchronization of multi-agent nonlinear systems with uncertain parameters. Diferent from the existing investigations of impulsive synchronization of multi-agent systems, the proposed impulsive control protocol with impulsive time window is more efective in practical systems. Finally, two simulation results demonstrate the validity of the theoretical results.
Xiaochen Liu,Peng Xu,Like Yao,Xiang Li,Chi Pang,Long Yang,Yi Liang 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.10
Laser cladding technology was adapted to fabricate Fe-based shape memory alloy/Nb composite coatings with 5 wt. % Nb doping amounts on 304 stainless steel to promote the microhardness and wear resistance. The SEM, XRD, optical profilometer and electrochemical workstation were used to characterize micromorphology, phase and microstructure. Meanwhile, wear and anti-resistance ability were detected. The results showed that Nb, NbC, ε-martensite, α’-martensite and γ-austenite were found in SMA/Nb coating. The microhardness was enhanced because of the solid solution strengthening and second phase strengthening. Also, the shape recovery rate and anti-corrosion property of the SMA/Nb coating are improved as well.