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Consensus problems in multi-agent systems with double integrator model
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作者 高利新 闫慧娟 金丹 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第5期205-212,共8页
In this paper, we consider multi-agent consensus problems in a decentralised fashion. The interconnection topology graph among the agents is switching and undirected. The agent dynamics is expressed in the form of a d... In this paper, we consider multi-agent consensus problems in a decentralised fashion. The interconnection topology graph among the agents is switching and undirected. The agent dynamics is expressed in the form of a double integrator model. Two different cases are considered in this study. One is the leader-following case and the other is leaderless case. Based on graph theory and common Lyapunov function method, some sufficient conditions are obtained for the consensus stability of the considered systems with the neighbour-based feedback laws in both leader-following case and leaderless case respectively. Finally, two numerical examples are given to illustrate the obtained results. 展开更多
关键词 multi-gent systems stability analysis CONSENSUS double-integrator model
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降低固体化学氧气发生器温度敏感性研究 被引量:6
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作者 周兴明 胡晓 +3 位作者 毛胜华 张毅 向进 毛龙 《固体火箭技术》 EI CAS CSCD 北大核心 2013年第4期534-538,共5页
固体化学氧气发生器利用氯酸盐发生热分解反应提供氧气,用燃速温度敏感性表征环境温度对固体化学氧气发生器供氧性能的影响程度。改变固体化学氧气发生器配方,测试固体化学氧气发生器的燃烧供氧性能,找出影响固体化学氧气发生器燃烧温... 固体化学氧气发生器利用氯酸盐发生热分解反应提供氧气,用燃速温度敏感性表征环境温度对固体化学氧气发生器供氧性能的影响程度。改变固体化学氧气发生器配方,测试固体化学氧气发生器的燃烧供氧性能,找出影响固体化学氧气发生器燃烧温度敏感性的主要因素。实验结果表明,适当的金属粉含量、不加催化剂、添加稳定剂可有效降低固体化学氧气发生器燃烧温度敏感性,能够保证固体化学氧气发生器在不同环境温度下的供氧流量和供氧时间的一致性。 展开更多
关键词 固体化学氧气发生器 燃烧 温度敏感性 催化剂 金属粉 稳定剂
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莱87区块高含铁污水处理技术
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作者 唐高峰 《复杂油气藏》 2014年第3期76-79,共4页
莱87块油田污水含铁量高,处理难度大,为此,开展了区块污水处理技术研究。通过分析区块污水特点,在工艺流程上采用了锰铁过滤除铁技术,通过精细过滤使污水悬浮物达标;开展了稳定铁离子和防垢等实验,优选出适合的加药配方,并优化现场实施... 莱87块油田污水含铁量高,处理难度大,为此,开展了区块污水处理技术研究。通过分析区块污水特点,在工艺流程上采用了锰铁过滤除铁技术,通过精细过滤使污水悬浮物达标;开展了稳定铁离子和防垢等实验,优选出适合的加药配方,并优化现场实施工艺。工艺流程投产后水质处理结果达到预期目标,为高含铁污水处理提供了技术支持。 展开更多
关键词 87 高含铁污水 锰铁过滤器 铁离子稳定剂 阻垢剂 稳定注水
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A-π-A structured non-fullerene acceptors for stable organic solar cells with efficiency over 17% 被引量:1
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作者 Wei Liu Jun Yuan +9 位作者 Can Zhu Qingya Wei Songting Liang Huotian Zhang Guanhaojie Zheng Yunbin Hu Lei Meng Feng Gao Yongfang Li Yingping Zou 《Science China Chemistry》 SCIE EI CSCD 2022年第7期1374-1382,共9页
With the development of photovoltaic materials, especially the small molecule acceptors(SMAs), organic solar cells(OSCs)have made breakthroughs in power conversion efficiencies(PCEs). However, the stability of high-pe... With the development of photovoltaic materials, especially the small molecule acceptors(SMAs), organic solar cells(OSCs)have made breakthroughs in power conversion efficiencies(PCEs). However, the stability of high-performance OSCs remains a critical challenge for future technological applications. To tackle the inherent instability of SMA materials under the ambient conditions, much effort has been made to improve OSCs stability, including device modification and new materials design. Here we proposed a new electron acceptor design strategy and developed a “quasi-macromolecule”(QM) with an A-π-A structure,where the functionalized π-bridge is used as a linker between two SMAs(A), to improve the long-term stability without deteriorating device efficiencies. Such type of QMs enables excellent synthetic flexibility to modulate their optical/electrochemical properties, crystallization and aggregation behaviors by changing the A and π units. Moreover, QMs possess a unique long conjugated backbone combining high molecular weight over 3.5 k Da with high purity. Compared with the corresponding SMA BTP-4F-OD(Y6-OD), the devices based on newly synthesized A-π-A type acceptors QM1 and QM2 could exhibit better device stability and more promising PCEs of 17.05% and 16.36%, respectively. This kind of “molecular-framework”(A-π-A)structure provides a new design strategy for developing high-efficiency and-stability photovoltaic materials. 展开更多
关键词 a-π-A type quasi-macromolecule new molecular design strategy high efficiency and long-term stability organic solar cells
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