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您的检索式：作者名="Zehuan Lin"
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| 1 | Controllability analysis of multi-agent systems with switching topology over finite fields显示文摘In this paper, we investigate the controllability problem of multi-agent systems with switching topology over finite fields. The multi-agent system is defined over finite fields, where agents process only values from a finite alphabet. Under leader-follower structure, one agent is selected as a leader for each subsystem. First, we prove that a multi-agent system with switching topology is controllable over a finite field if the graph of the subsystem is a spanning forest, and the size of the field is sufficiently large. Second,we show that, by appropriately selecting leaders, the multi-agent system with switching topology can be controllable over a finite field even if each of its subsystems is not controllable. Specifically, we show that the number of leaders for ensuring controllability of the switched multi-agent system is less than the minimum number of leaders for ensuring the controllability of all subsystems. Finally, it is proved that the multi-agent system is controllable over a finite field if the union of the graphs is a directed path graph or a star graph. | Zehuan LU Lin ZHANG Long WANG | 2019 | Science China(Information Sciences)2019，62，1： | 7 |
| 2 | Microstructures and Mechanical Properties of Al-Mg-Sc-Zr Alloy Additively Manufactured by Laser Direct Energy Deposition显示文摘An Al-Mg-Sc-Zr alloy was additively manufactured by laser direct energy deposition(DED)under different laser powers,and the microstructures and mechanical properties of the as-deposited samples were investigated.The samples showed a fully equiaxed grain structure with grain sizes of 2–30μm.Most of the blocky primary Al3(Sc,Zr)-precipitated phases(<5μm)were arranged along the grain boundaries.A small amount of fine granular secondary Al3(Sc,Zr)phases(<0.5μm)were precipitated owing to the cyclic heat treatment during the DED forming process.According to the EBSD(Electron backscatter diffraction)results,the texture index and strength of the sample were only slightly greater than 1,indicating that the material structure exhibited a certain but not obvious anisotropy.The sample in the horizontal direction had better yield strength,tensile strength,and elogation properties(399.87 MPa,220.96 MPa,9.13%)than that in the building direction(385.40 MPa,219.40 MPa,8.24%),although the sample in the〈XOZ〉plane had the finest equiaxed grains.The ductility of the〈XOZ〉sample deteriorated as the number of pores increased. | Qian Hua Wenjun Wang Ruidi Li Hongbin Zhu Zehuan Lin Rong Xu Tiechui Yuan Kai Liu | 2022 | Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers)2022，1，4： | 1 |
| 3 | Fabrication and Photocatalytic Application of Highly Ordered TiO2 Nanotube Arrays显示文摘 | Zehuan Hu Ke Du Yang Cao Jianbao Li Shiwei Lin | 2010 | 材料科学与工程(中英文版)2010，4，8： | 1 |
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