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多目标协同建筑结构消能减震技术研究进展

Superconducting X-ray detectors

工程力学 2025年第1期42卷 1-9页

作者：李爱群解琳琳杨参天北京建筑大学土木与交通工程学院北京100044

消能减震技术是提升建筑结构抗震性能的有效手段。随着城乡建设的发展，以“最大层间位移角”作为主要控制目标的传统消能减震技术，逐渐难以满足更综合性、系统性的结构地震安全需求，催生了多目标协同减震技术。该文重点介绍和总结课... 详细信息

消能减震技术是提升建筑结构抗震性能的有效手段。随着城乡建设的发展，以“最大层间位移角”作为主要控制目标的传统消能减震技术，逐渐难以满足更综合性、系统性的结构地震安全需求，催生了多目标协同减震技术。该文重点介绍和总结课题组在多目标协同减震技术领域的研究工作，以“结构最大响应与损伤集中协同控制”、“多地震水准响应协同控制”和“结构刚度与耗能能力的协同控制”三种协同减震策略为例，逐一阐述分析协同控制的需求，概括介绍团队提出的协同控制思路和研究进展，并展望多目标协同减震技术未来的发展方向。

关键词：减震结构多目标协同减震消能减震装置双阶阻尼器组合减震

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Science China(Information Sciences) 2020年第8期63卷 91-109页

作者： can yang Mengting SI Lixing YOU State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology (SIMIT)Chinese Academy of Sciences CAS Center for Excellence in Superconducting Electronics (CENSE) Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Zhejiang Photon Technology Co.Ltd. Guigu Science Park

Owing to their high sensitivity and low noise, superconducting detectors are used for photon detection from microwave to high-energy particles. X-ray detection plays an important role in materials analysis, astronomy, and medical radiography, which require high efficiency as well as high energy resolution. However, traditional semiconducting detectors cannot fulfill these requirements. In this article, we review superconducting quantum detectors for X-ray detection, including transition-edge sensor(TES), superconducting tunneling junctions(STJs), kinetic inductance detectors(KIDs) and superconducting nanowire single-photon detectors(SNSPDs), and introduce the physical structures, working mechanisms, and device behaviors of these detectors. We also review their performances regarding X-ray detection and analyze their respective characteristics. According to recent progress and the requirements of various applications, possible improvement of superconducting detectors for X-rays are discussed.

关键词： superconducting X-ray detectors transition-edge sensors superconducting tunneling junctions kinetic inductance detectors superconducting nanowire single-photon detector

Human-machine interaction force control: using a model-referenced adaptive impedance device to control an index finger exoskeleton

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第4期15卷 275-283页

作者： Qian BI can-jun yang State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

Exoskeleton robots and their control methods have been extensively developed to aid post-stroke rehabilitation. Most of the existing methods using linear controllers are designed for position control and are not suitable for human-machine interaction(HMI) force control, as the interaction system between the human body and exoskeleton is uncertain and nonlinear. We present an approach for HMI force control via model reference adaptive impedance control(MRAIC) to solve this problem in case of index finger exoskeleton control. First, a dynamic HMI model, which is based on a position control inner loop, is formulated. Second, the theoretical MRAC framework is implemented in the control system. Then, the adaptive controllers are designed according to the Lyapunov stability theory. To verify the performance of the proposed method, we compare it with a proportional-integral-derivative(PID) method in the time domain with real experiments and in the frequency domain with simulations. The results illustrate the effectiveness and robustness of the proposed method in solving the nonlinear HMI force control problem in hand exoskeleton.

关键词： Interaction force Adaptive control Exoskeleton Human-machine interaction(HMI) Impedance

Overall optimization of Rankine cycle system for waste heat recovery of heavy-duty vehicle diesel engines considering the cooling power consumption

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Science China(Technological Sciences) 2016年第2期59卷 309-321页

作者： yang can XIE Hui ZHOU Sheng K State Key Laboratory of Engines Tianjin University

The Rankine cycle system for waste heat recovery of heavy-duty vehicle diesel engines has been regarded as a promising tech- nique to reduce fuel consumption. Its heat dissipation in the condensation process, however, should be take：l away in time, which is an energy-consuming process. A fan-assisted auxiliary water-cooling system is employed in this paper. Results at 1300 r/min and 50% load indicate that the cooling pump and cooling fan together consume 7.66% of the recovered power. What＇s worse for the heavy load, cooling accessories may deplete of all the recovered power of the Rankine cycle system. Af- terwards, effects of the condensing pressure and water feeding temperature are investigated, based on which a cooling power consumption model is established. Finally, an overall efficiency optimization is conducted to balance the electric power gener- ation and cooling power consumption, taking condensing pressure, pressure ratio and exhaust bypass valve as major variables. The research suggests that the priority is to increase condensing pressure and open exhaust bypass valve appropriately at high speed and heavy load to reduce the cooling power consumption, while at low speed and light load, a lower condensing pressure is favored and the exhaust bypass valve should be closed making the waste heat recovered as much as possible. Within the sub-critical region, a larger pressure ratio yields higher overall efficiency improvement at medium-low speed and load. But the effects taper off at high speed and heavy load. For a given vehicular heavy-duty diesel engine, the overall e：＇ficiency can be improved by 3.37% at 1300 r/min and 25% load using a Rankine cycle system to recover exhaust energy. The improvement becomes smaller as engine speed and load become higher.

关键词： vehicular diesel engines Rankine cycle system cooling power consumption waste heat recovery overalloptimization

A novel aptasensor based on 3D-inorganic hybrid composite as immobilized substrate for sensitive detection of platelet-derived growth factor

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Chinese Chemical Letters 2017年第7期28卷 1417-1423页

作者： Chun-Ling Zhao Mei Hua can-Yu yang Yun-Hui yang College of Chemistry and Chemical Engineering Yunnan Normal UniversityKunming 650092China

A novel electrochemical detection approach for platelet-derived growth factor（PDGF） via ＂sandwich＂structure is reported in this paper. 3D-4MgCO3 Mg（OH）2 4H2O-Au NPs inorganic hybrid composite was utilized as immobilized substrate for sensitive PDGF detection and Pt-Au bimetallic nanoparticles were labelled on PDGF aptamer to indirectly detect PDGF for the first time. The proposed aptasensor exhibited a high catalytic efficiency towards reduction of H2O2, hence the sensitive detection of PDGF was *** showed that the aptasensor exhibited excellent linear response to PDGF, in the range of 0.1 pg/m L–10 ng/m L（4 fmol/L–400 pmol/L）, with detection limit of 0.03 pg/m L（1.2 fmol/L）.

关键词： Aptasensor Platelet-derived growth factor 3D-inorganic hybrid composite Pt-Au bimetallic nanoparticles 4MgCO3·Mg(OH)2·4H2O-Au NPs

Prediction of Long-Term Extreme Response of Fish Cage Using Environmental Contour Method

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China Ocean Engineering 2021年第3期35卷 332-343页

作者： BAI Xiao-dong GUO Wei-wei yang can LUO Han-bing State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China Department of Naval Architecture and Ocean Engineering Tianjin UniversityTianjin 300072China China Water Resources Bei Fang Investigation Design and Research CO.LTDTianjin 300222China College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China

The fish cage design requires accurate predictions of long-term extreme loads and *** with the time-consuming full long-term analysis method integrating all the probability distribution of the short-term extremes,the environmental contour method gains much attention in predicting the long-term extreme values due to the less computational *** paper investigates the long-term extreme response of a fish cage using the environmental contour *** fish cage is numerically simulated based on the lumped-mass method and the curved beam *** on the one-dimensional(1D)and two-dimensional(2D)environmental contour,the extreme responses,including the surge and heave motions,mooring force,and vertical bending of the floater,are predicted for different return periods and compared with the full long-term analysis *** indicate that the 1D method greatly underestimates the extreme *** 2D environmental contour method with a higher percentile level,namely90%,provides reasonable estimations and seems to be suitable for the long-term value *** studies show that the mooring arrangement and the bending stiffness have great effects on the bending moment and the mooring force and the mooring line pre-tension has minor effects on the fish cage response.

关键词： fish cage long-term extreme value environmental contour method sensitivity analysis

Graft of Chiral Amino Alcohol onto Poly（menthyl vinyl ketone） and the Grafted Polymer＇s Inducement to the Asymmetric Addition of Phenylacetylene to Aromatic Ketone

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Chemical Research in Chinese Universities 2015年第4期31卷 669-673页

作者： LIU can ZHOU Ya yang Liwen yang Nianfa ZHANG Anlin Key Laboratory of Environmentally Friendly Chemistry and Applications Ministry of Education College of Chemistry Xiangtan University Xiangtan 411105 P. R. China

A new kind of optically active polymer bearing chiral amino alcohol was prepared by means of graft. The resulting grafted polymer was obtained as follows. First, the carbonyl of optically active helical poly（menthyl vinyl ketone）（poly-MVK） was reduced to hydroxyl group with lithium aluminum hydride as a reductant to yield poly（1-menthyl-2-propen-1-ol）（poly-MPO）. Second, the hydroxyl group of poly-MPO reacted with epichlorohydrin to yield methyloxirane-loading poly-MPO[（poly-MPO）-MO]. Third, the（poly-MPO）-MO reacted with amine to pro- duce optically active polymer bearing chiral amino alcohol[（poly-MPO）-APO]. The （poly-MPO）-APO was applied to the asymmetric addition of phenylacetylene to aromatic ketone. Good enantioselectivities were achieved and the catalyst could be recovered and reused 5 times with unchanged enantioselectivity and slightly decreased activity.

关键词： Chiral amino alcohol Graft Poly(menthyl vinyl ketone) Enantioselective addition

Design and analysis of an underwater inductive coupling power transfer system for autonomous underwater vehicle docking applications

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第1期15卷 51-62页

作者： Jian-guang SHI De-jun LI can-jun yang State Key Laboratory of Fluid Power Transmission and Control

We develop a new kind of underwater inductive coupling power transfer(ICPT)system to evaluate wireless power transfer in autonomous underwater vehicle(AUV)docking *** that determine the performance of the system are systematically analyzed through mathematical methods.A circuit simulation model and a finite element analysis(FEA)simulation model are developed to study the power losses of the system,including copper loss in coils,semiconductor loss in circuits,and eddy current loss in transmission *** characteristics of the power losses can provide guidelines to improve the efficiency of ICPT *** results and simulation results are validated by relevant experiments of the prototype *** output power of the prototype system is up to 45 W and the efficiency is up to *** preliminary results indicate that the efficiency will increase as the transmission power is raised by increasing the input *** the output power reaches 500 W,the efficiency is expected to exceed *** efficiency can be further improved by choosing proper semiconductors and *** analysis methods prove effective in predicting the performance of similar ICPT systems and should be useful in designing new systems.

关键词： Inductive coupling power transfer(ICPT) Autonomous underwater vehicle(AUV) docking Coupling coefficient Resonant capacitance Power transfer efficiency Power loss Eddy current

Methods for the construction of DEMs of artificial slopes considering morphological features and semantic information

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Journal of Mountain Science 2022年第2期19卷 563-577页

作者： XU Yan ZHAO Ming-wei LU Jie WANG Chun JIANG Ling yang can-can HUANG Xiao-li Geographic Information and Tourism.College Chuzhou UniversityChuzhou 239000China State Key Laboratory of Resources and Environmental Information System Beijing 100101China College of Forestry Beijing Forestry UniversityBeijing 100083China

As human activities increase,artificially modified terrain is increasingly widely distributed in road,hydrological,and urban *** modified terrain plays an important role in protecting from geological disasters and in the planning and design of urban *** with natural slopes,artificial slopes have obvious morphological *** modeling methods are no longer suitable for digital elevation model(DEM)modeling of artificial slopes because they often seriously distort the DEM *** this paper,from the perspective of morphological characteristics,artificial slopes are divided into two types,namely,regular slopes and irregular slopes,based on whether the top and bottom lines of the artificial slope are ***,according to the morphological characteristics of the two types of slopes,the following DEM construction methods are designed:the first method(perpendicular+inverse distance weighted)is suitable for regular slopes,and the second method(perpendicular+high-accuracy surface modeling)is suitable for irregular ***,a DEM construction test is carried out using the artificial slopes in the study *** results show that for the regular and irregular slopes in the study area,the construction method proposed in this paper has significant advantages in morphological accuracy over the traditional method(triangulated irregular network),and the elevation accuracy method is also superior to the traditional method(using this method,the mean error and standard deviation error of the regular slope DEM are 0.08 m and 0.13 m,respectively,and those of the irregular slope DEM are 0.08 m and 0.06 m).In addition,the top lines and bottom lines can be included in the DEM construction of the background area after processing the elevation information of the boundary line to realize a smooth transition in the boundary between the artificial slope and the background area.

关键词： Artificial slopes DEM Morphological characteristics Triangulated irregular network High-accuracy surface modeling