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| 1 | DIRECTIONALLY SOLIDIFIED MICROSTRUCTURE OF AN ULTRA-HIGH TEMPERATURE Nb-Si-Ti-Hf-Cr-Al ALLOY显示文摘The directionally solidified samples of an ultra-high temperature Nb-Si-Ti-Hf-Cr-Al alloy have been prepared with the use of an electron beam floating zone melting (EBFZM)furnace, and their microstructural characteristics have been analyzed. All the primary dendrites of Nb solid solution (Nbss), eutectic colonies of Nbss plus (Nb, Ti)3Si/(Nb,Ti)5Si3 and chains of (Nb, Ti)3Si/(Nb, Ti)5Si3 plates align along the growth direction of the samples. With increasing of the withdrawing rate, the microstructure is refined, and the amounts of Nbss+(Nb, Ti)3Si/(Nb, Ti)5Si3 eutectic colonies and (Nb, Ti)3Si/(Nb, Ti)5Si3 plates increase. There appear nodes in the (Nb, Ti)3Si/(Nb,Ti)5Si3 plates. | P.Guan X.P.Guo X.Ding J.Zhang L.M.Gao K. Kusabiraki | 2004 | Acta Metallurgica Sinica(English Letters)2004，17，4： | 14 |
| 2 | 基于状态观测器的鲁棒故障诊断滤波器设计LMI方法显示文摘研究受不确定性扰动影响情况下线性时不变连续时间系统的鲁棒故障诊断滤波器设计问题 .引入一种新的体现残差对于故障信号灵敏度和不确定性扰动鲁棒性的性能指标 ,从系统的 L2 增益角度出发 ,将基于状态观测器的鲁棒故障诊断滤波器设计问题形成为 H∞ 优化问题 .然后应用线性矩阵不等式技术 ,给出并证明了该设计问题的解存在条件和求解方法 .并通过简例说明了算法的有效性 . | 钟麦英 汤兵勇 Steven X.Ding | 2002 | 自动化学报2002，28，6： | 8 |
| 3 | MHD Instabilities and Their Effects on Plasma Confinement in Large Helical Device Plasmas with Intense Neutral Beam Injection显示文摘MHD stability of the Large Helical Device (LHD) plasmas produced with intense neutral beam injection is experimentally studied. When the steep pressure gradient near the edge is produced through L-H transition or linear density ramp experiment, interchange-like MHD modes whose rational surface is located very close to the last closed flux surface are strongly excited in a certain discharge condition and affect the plasma transport appreciably. In NBI-heated plasmas produced at low toroidal field, various Alfvén eigenmodes are often excited. Bursting toroidal Alfvén egenmodes excited by the presence of energetic ions induce appreciable amount of energetic ion loss, but also trigger the formation of internal and edge transport barriers. | K.Toi S.Ohdachi S.Yamamoto S.Sakakibara K.Y.Watanabe N.Nakajima X.Ding J.Li S.Morita K.Narihara K.Tanaka T.Tokuzawa H.Yamada Q.Yang | 2004 | Plasma Science and Technology2004，6，3： | 3 |
| 4 | A note on diagnosis and performance degradation detection in automatic control systems towards functional safety and cyber security显示文摘This note addresses diagnosis and performance degradation detection issues from an integrated viewpoint of functionality maintenance and cyber security of automatic control systems.It calls for more research attention on three aspects:(i)application of control and detection uni ed framework to enhancing the diagnosis capability of feedback control systems,(ii)projection-based fault detection,and complementary and explainable applications of projection-and machine learning-based techniques,and(iii)system performance degradation detection that is of elemental importance for today's automatic control systems.Some ideas and conceptual schemes are presented and illustrated by means of examples,serving as convincing arguments for research e orts in these aspects.They would contribute to the future development of capable diagnosis systems for functionality safe and cyber secure automatic control systems. | Steven X.Ding | 2022 | Security and Safety2022，1，1： | 2 |
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