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Adaptive Observer Based Backstepping Controller Design for Dynamic Ship Positioning

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China Ocean Engineering 2017年第5期31卷 639-645页

作者： DENG Fang wang long-jin JIAO Dong-mei College of Mechanical & Electrical Engineering Qingdao University of Science & Technology

Modified adaptive observer based backstepping control system for dynamic positioning of ship is proposed. As an improvement, the adaptive observer takes the first-order wave frequency model and the bias term which represent the slowly varying environmental disturbances and the unmodeled dynamics. Thus, the wave-frequency motions are filtered out, and only the reconstructed low-frequency motions are sent as inputs of the controller. Furthermore, as the ship dynamics parameters are unknown, the adaptive estimation law is designed for both the unknown ship dynamics and the unmeasured state variables. Based on the estimated states and parameters, backstepping controller considering the integral action is designed. Global exponential stability （GES） for the total system is proved using Lyapunov direct method. Simulation results show a good performance of the observer and control system.

关键词： Dynamic positioning backstepping control adaptive observer parameter estimation

Influence of Nitrogen Fertilizer and Endophyte Infection on Ecophysiological Parameters and Mineral Element Content of Perennial Ryegrass

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Journal of Integrative Plant Biology 2009年第1期51卷 75-83页

作者： An-Zhi Ren Yu-Bao Gao Wei wang jin-long wang Nian-Xi Zhao College of Life Science Nankai University Tianjin 300071 China

An experiment was designed to determine the effect of the fungal endophyte Neotyphodium Iolii on the growth, physiological parameters and mineral element content of perennial ryegrass （Lolium perennel L.）, when growing at two N supply levels. Endophyte infection had a significant positive effect on both shoot and root growth of ryegrass, but this difference was only significant in the high N supply treatment. At high N supply, endophyte-infected （El） plants accumulated more soluble sugar in the sheath and the root than endophyte-free （EF） plants. Endophyte infection affected mineral element concentrations in the root more than in the shoot. We found a significant effect of endophyte infection on B, Mn and Mg in the root, but significant effect was only found on B in the shoot. El plants tended to accumulate less B in the shoot at both N levels, but accumulated more B, Mn and Mg in the root at low N levels. The difference of growth parameters in different periods was significant. The content of soluble sugar and crude protein in the sheath were also dependent on the growth stages of both El and EF plants.

关键词： growth Lofiumperenne mineral element Neotyphodiumlolii nitrogen.

Dynamic Analysis of A Deepwater Drilling Riser with A New Hang-off System

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China Ocean Engineering 2024年第1期38卷 29-41页

作者： LI Yan-wei LIU Xiu-quan wang jin-long CHEN Guo-ming CHANG Yuan-jiang SHENG Lei-xiang Centre for Offshore Engineering and Safety Technology China University of PetroleumQingdao 266580China National Engineering Laboratory of Offshore Geophysical and Exploration Equipment China University of PetroleumQingdao 266580China China CNOOC Research Institute Co. Ltd.Beijing 100028China

The safety of risers in hang-off states is a vital challenge in offshore oil and gas engineering.A new hang-off system installed on top of risers is proposed for improving the security of *** approach leads to a challenging problem:coupling the dynamics of risers with a new hang-off system combined with multiple structures and complex *** accurately analyze the dynamic responses of the coupled system,a coupled dynamic model is established based on the Euler-Bernoulli beam-column theory and penalty function method.A comprehensive analysis method is proposed for coupled dynamic analysis by combining the finite element method and the Newmarkβ*** analysis program is also developed in MATLAB for dynamic *** simulation results show that the dynamic performances of the risers at the top part are significantly improved by the new hang-off system,especially the novel design,which includes the centralizer and articulation *** bending moment and lateral deformation of the risers at the top part decrease,while the hang-off joint experiences a great bending moment at the bottom of the lateral restraint area which requires particular attention in design and *** platform navigation speed range under the safety limits of risers expands with the new hang-off system in use.

关键词： deepwater drilling riser new hang-off system dynamic analysis finite element method penalty function method

Generation of electricity from CO_2 mineralization: Principle and realization

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Science China(Technological Sciences) 2014年第12期57卷 2335-2346页

作者： XIE He Ping wang Yu Fei HE Yang GOU Ma Ling LIU Tao wang jin long TANG Liang JIANG Wen ZHANG Ru XIE Ling Zhi LIANG Bin Center of CO2 Mineralization and CCUS Sichuan University College of Water Resource & Hydropower Sichuan University Institute for Nanobiomedical Technology and Membrane Biology Regenerative Medicine Research Center West China HospitalWest China Medical School Sichuan University State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy Wets China Hospital Sichuan University College of Chemical Engineering Sichuan University

Current CO2 reduction and utilization technologies suffer from high energy consuming. Thus, an energy favourable route is in urgent demanding. CO2 mineralization is theoretically an energy releasing process for CO2 reduction and utilization, but an approach to recovery this energy has so far remained elusive. For the first time, here we proposed the principle of harvesting electrical energy directly from CO2 mineralization, and realized an energy output strategz1 for CO2 utilization and reduction via a CO2-mineralization fuel cell （CMFC） system. In this system CO2 and industrial alkaline wastes were used as feedstock, and industrial valuable NaHCO3 was produced concomitantly during the electricity generation. The highest power density of this system reached 5.5 W/m2, higher than many microbial fuel cells. The maximum open circuit voltage reached 0.452 V. Moreo- ver, this system was demonstrated viable to low concentration CO2 （10%） and other carhonation process. Thus, the existing of an energy-generating and environmentally friendly strategy to utilize CO2 as a supplement to the current scenario of CO2 emis- sion control has been demonstrated.

关键词： CO2 mineralization electricity generation sodium bicarbonates CO2 utilization

Play Theory and Literature:An Interview With Professor Massimo Verdicchio

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Journal of Literature and Art Studies 2020年第9期10卷 808-814页

作者： HUANG Kai-hong wang jin-long Shanghai Normal University Tianhua College ShanghaiChina

In the following is an article of dialogue between Professor Massimo Verdicchio and Professor Huang *** Huang Kaihong,along with the help from Professor wang jinlong,carried out the interview on the topic of the relation between play theory and literature with Professor Massimo *** the one hand,Professor Huang Kaihong points out that play theory has been stemmed and developed from game theory but pushed forward a further step in its application to the analysis of literary works,while Professor Massimo Verdicchio regards play theory just as another approach to the appreciation of literary *** Professors agree on that literary works can be analyzed and appreciated from different perspectives,and they also discussed about something concerning the ethics in *** article ends with the correspondence via email between Professor Massimo Verdicchio and Professor Huang Kaihong on exchanging more personal opinions towards play theory’s crucial issues.

关键词： interview relation between play theory and literary works ethics

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左/右差速器轴承座缩孔的消除

铸造技术 2005年第9期26卷 756-757页

作者：汪金龙中国第一拖拉机集团有限公司球铁铸铝厂河南洛阳471004

通过对左/右差速器轴承座零件结构和原工艺的分析,找出了铸件缩孔、缩松问题的实质,应用铸件均衡凝固技术,采取合理的工艺和零件结构改进等措施,消除了铸件缩孔、缩松,取得了较好的效果。

关键词：左/右差速器轴承座缩孔缩松铸造工艺

Effects of Rooting Agents on Growth and Photosynthetic Traits of Sudan Grasses

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Animal Husbandry and Feed Science 2010年第6期2卷 45-48页

作者： wang jin-long YANG Ming ZHENG Yan Department of Agronomy Tianjin Agricultural University Tianjin 300384 China

[Objective] To investigate the effects of rooting agents on the growth and photosynthetic traits of Sudan grasses. [ Method] The responses of the growth and some photosynthetic traits of Sudan grasses to three NK II rooting agents were determined according to the randomized complete block design. [ Result] Compared to control treatment, the Sudan grass treated by NK 11-298 showed higher chlorophyll a and carotenoid contents, higher chlorophyll fluorescence parameter values （ PSII quantum efficiency： ФPSII; photochemical quenching： qP; and electron transport rate： ETR）, higher maximum photosynthetic rate （Pmax） and respiration rate （ Rd）, and the highest biomass accumulation. The chlorophyU fluorescence parameter values of Sudan grasses treated by NK 11-888 and NK 11-16 were higher than those of control treatment （ P 〈 0.05）, and other indexes had no significant difference. [ Conclusion] The rooting agents should be selected carefully according to their practice aims because of sensibility of Sudan grass to rooting agents.

关键词： Sudan grasses Rooting agents Chlorophyll Chlorophyll fluorescence parameter Pn-PPFD curve

先驱体转化法制备高性能碳化硼陶瓷材料研究进展

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无机材料学报 2017年第8期32卷 785-791页

作者：王浩王金龙苟燕子国防科技大学航天科学与工程学院新型陶瓷纤维及其复合材料重点实验室长沙410073 西北核技术研究所西安710024

碳化硼(B4C)是一种性能优良的特种陶瓷,在军事、核工业、航空航天等领域有着广泛的应用。近年来,采用先驱体转化法制备碳化硼陶瓷得到了长足的发展。相比碳化硼材料的其它制备方法,先驱体转化法具有元素组成简单、成型性好、陶瓷产率高... 详细信息

碳化硼(B4C)是一种性能优良的特种陶瓷,在军事、核工业、航空航天等领域有着广泛的应用。近年来,采用先驱体转化法制备碳化硼陶瓷得到了长足的发展。相比碳化硼材料的其它制备方法,先驱体转化法具有元素组成简单、成型性好、陶瓷产率高、能耗低等优势,在制备碳化硼粉体、纤维、介孔材料、微球等方面有着广泛的应用。本文综述了先驱体转化法制备碳化硼陶瓷的最新研究进展,着重介绍了碳化硼先驱体的合成及应用,并对先驱体转化法制备碳化硼陶瓷的发展方向和应用前景进行了展望。

关键词：碳化硼先驱体聚碳硼烷先驱体转化法综述

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启发式全局偏序挖掘算法

模式识别与人工智能 2008年第2期21卷 142-147页

作者：王金龙徐从富浙江大学计算机科学与技术学院杭州310027 青岛理工大学计算机工程学院青岛266033

偏序模型能直观反映序列数据信息,全局偏序模型能进一步从整体上更加准确反映序列的全局信息,方便用户的理解.本文对全局偏序模型的构建方法进行研究,针对基于遍历搜索构建模型所造成的效率较低,不宜扩展的问题,提出基于启发式搜索的全... 详细信息

偏序模型能直观反映序列数据信息,全局偏序模型能进一步从整体上更加准确反映序列的全局信息,方便用户的理解.本文对全局偏序模型的构建方法进行研究,针对基于遍历搜索构建模型所造成的效率较低,不宜扩展的问题,提出基于启发式搜索的全局模型构造改进算法.在模型构造中有效利用频繁序列挖掘算法所获得的局部信息,改进搜索路径,提高算法效率,获得准确结果.

关键词：序列模式挖掘偏序全局偏序模型启发式方法