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2nd IEEE International Power Electronics and Application Symposium, PEAS 2023

作者： Zhang, Junzhao Jiang, Dong Guo, Jiangyan Liu, Cong Ou, Yanghui Huazhong University of Science and Technology Wuhan430074 China Cnooc Research Institute Ltd Beijing100028 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan430081 China

ISBN: (纸本)9798350313765

marine petroleum resources have become a new growth point in the global energy industry. The development of deep-sea oil and gas fields requires the use of numerous underwater electrical equipment, which makes the cost of employing underwater transformer systems for underwater power supply difficult to bear. On the other hand, underwater AC power transmission systems are suitable for establishing underwater distribution networks and supplying power to equipment within a small range by placing variable frequency drives (VFDs) underwater. However, the underwater VFD system contains a long high-voltage umbilical cable, and the stability and reliability of the system are greatly influenced by the length and impedance characteristics of the cable. In this paper, a long cable model considering frequency characteristics is analyzed and utilized to simulate the skin effect. A submarine AC power transmission system was constructed, and through simulation analysis, a comparison was made between the harmonic magnitudes before and after considering the skin effect of long cables. © 2023 IEEE.

关键词： skin effect submarine cable variable frequency drive

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Health Status Assessment of Aero-Engine Based on Multilayer Information Sharing and MOSE

Health Status Assessment of Aero-Engine Based on Multilayer ...

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2023 China Automation Congress, CAC 2023

作者： Qin, Bin Ouyang, Hui Peng, Xin Zhou, Wei Liu, Zhenxing Zhang, Yong School of Information Science and Engineering Wuhan University of Science and Technology Wuhan China Wuhan Second Ship Design and Research Institute Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan China

ISBN: (纸本)9798350303759

As the heart of an aircraft, the complex structure of an aero-engine poses a considerable challenge for its maintenance. The traditional health status assessment includes two tasks of remaining useful life prediction and health status division, but this paper adds the study of reliability assessment of aero-engine operation process on its basis and proposes an aero-engine health status assessment method based on multilayer information sharing and MOSE. Firstly, a series of machine learning methods such as principal component analysis are used to preprocess the data, and a label construction method based on slope division is adopted. Secondly, the shared information in the sensor signal is extracted using the MOSE network module and the extracts task-specific information in the sensor signal is extracted by the BIGRU network module, and the weighted decision is realized by the gating network on the output of both, and the prediction output of each sub-task is performed by the sub-task module. Finally, experiments on the C-MPASS dataset show that the proposed method in this paper outperforms recent popular models. © 2023 IEEE.

关键词： Principal component analysis

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Sliding-mode Model Predictive Control for PMSMs with Current Compensation 13

Sliding-mode Model Predictive Control for PMSMs with Current...

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13th International Conference on Power and Energy Systems, ICPES 2023

作者： Li, Peng Zhang, Sai Shen, Anwen Tang, Qipeng Wuhan Second Ship Design and Research Institute Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan China Huazhong University of Science and Technology School of Artificial Intelligence and Automation Wuhan China

ISBN: (纸本)9798350345063

Model predictive control (MPC) methods are widely used in permanent magnet synchronous motor (PMSM);however, How to minimize the impact of system delay and motor parameter perturbation on the operation of PMSM is the key to constrain the MPC. To address the problem of current disturbance caused by system delay and motor parameter perturbation, we will propose a series of sliding modes to suppress current disturbances caused by above reasons. Besides, The PMSM model is used to analyse the causes of system delay. Then, the current disturbance caused by parameter perturbation is introduced into the adaptive sliding mode control algorithm for suppression, and the relevant theoretical proof is given. Finally, the effectiveness of the overall scheme is verified through simulations. © 2023 IEEE.

关键词： Model predictive control

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Non-contact optical dynamic measurements at different ranges:a review

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Acta Mechanica Sinica 2021年第4期37卷 537-553,I0001页

作者： Yu Fu Yang Shang Wenxin Hu Bin Li Qifeng Yu Shenzhen Key Laboratory of Intelligent Optical Measurement and Detection Shenzhen UniversityShenzhen 518060China Hunan Provincial Key Laboratory of Image Measurement and Vision Navigation College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China

Optical dynamic measurements are widely used for non-contact vibration,continuous deformation,or moving *** measurement techniques were developed for different deformation *** paper reviews three types of technique for different measurement ranges:interferometric techniques for deformation or vibration(nanometer to submillimeter amplitude)whose measurement accuracies rely on phase extraction of interferometric signal;imaging based techniques for deformation or vibration(micrometer to centimeter amplitude)with the aid of moire,structured light,and man-made speckles,whose sensitivities is from 1/100 to 1/10 pixel;and videometrics for large deformation or movement detection(greater than centimeter amplitude).Many research groups have improved measurement capabilities for these three techniques to meet particular industrial application requirements.

关键词： Vibration measurement Laser interferometry Digital image correlation High-speed imaging Videometrics

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Zero-Power Transmission Control for DFIG-Based WT to Improve Synchronization Stability During Severe Grid Faults

Zero-Power Transmission Control for DFIG-Based WT to Improve...

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2023 IEEE International Conference on Energy Technologies for Future Grids, ETFG 2023

作者： Yang, Yihang Zhou, Shiying Sun, Chao Zhu, Donghai Zou, Xudong Kang, Yong Hu, Jiabing Huazhong University of Science and Technology Power Electronics and Energy Management Key Laboratory Ministry of Education of China Wuhan430074 China Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan430205 China Wuhan Second Ship Design and Research Institute Wuhan430205 China

ISBN: (纸本)9781665471640

Wind turbines (WTs) depend on the phase-locked loop (PLL) to maintain synchronization with power grid when integrated in weak grid. However, PLL may loss equilibrium point resulting in synchronous instability with improper active current reference, since voltage dips during severe grid faults diminish transfer capacity between WT and power grid. To cope with this issue, the zero-power transmission control for DFIG-based WT is proposed to improve synchronous stability. In this strategy, controlled rotor active current is injected to ensure that the DFIG- based WT operates at the stable equilibrium point during grid faults from the perspective of transmitted active power balance. This strategy is independent on the grid parameters and no addition controller parameter need to be designed, making the proposed method easy to use in practice. In the end, the experiments are performed to validate the theoretical analysis and proposed strategy. © 2023 IEEE.

关键词： Equilibrium point severe grid fault synchronization stability wind turbines (WTs)

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A non-peptide-based chymotrypsin-targeted long-wavelength emission fluorescent probe with large Stokes shift and its application in bioimaging

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Chinese Chemical Letters 2024年第10期35卷 430-436页

作者： Chuanfeng Fan Jian Gao Yingkai Gao Xintong Yang Gaoning Li Xiaochun Wang Fei Li Jin Zhou Haifeng Yu Yi Huang Jin Chen Yingying Shan Li Chen Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science MOEShandong Provincial Key Laboratory of Biochemical EngineeringQingdao Nucleic Acid Rapid Detection Engineering Research CenterCollege of Marine Science and Biological EngineeringQingdao University of Science and TechnologyQingdao266042China School of Chemistry and Life Science Anshan Normal UniversityLiaoning Key Laboratory of Development and Utilization for Natural Products Active MoleculesAnshan114007China Biomedical Analysis Center Army Medical UniversityChongqing 400038China School of Pharmacy Weifang Medical UniversityWeifang 261053China College of Chemistry Baicheng Normal UniversityBaicheng 137000China

As a hydrolase,chymotrypsin(CHT)is involved in many physiological activities,and its abnormal activity is closely related to diabetes,pancreatic fibrosis,chronic pancreatitis and pancreatic *** this work,an innovative long-wavelength emission fluorescent probe TCF-CHT was designed and synthesized for the high specificity detection of CHT,which utilized TCF-OH and a mimetic peptide substrate 4-bromobutyryl as chromogenic group and recognition group,***-CHT exhibited excellent selectivity and eye-catching sensitivity(8.91 ng/m L)towards CHT,“off-on”long-wavelength emission at 670 nm and large Stokes shift(140 nm).Furthermore,the successful fulfillment and perfect performance in imaging endogenous CHT in complex organisms(P815 cells,HepG2 cells,zebrafish and tumor-bearing mice)verified its potential as a powerful tool for the recognition of CHT in complicated biological environments.

关键词： Chymotrypsin Fluorescent probe Long-wavelength emission Large Stokes shift Bioimaging

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Submarine induced magnetic field simulation method based on multi-magnet combination 4

Submarine induced magnetic field simulation method based on ...

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4th International Conference on Computers, Information Processing and Advanced Education, CIPAE 2023

作者： Huang, Dongye He, Jie Wang, Yu Wang, Zuoshuai Wuhan University of Science and Technology Wuhan China Wuhan Ship Communication Research Institute Laboratory of Low-Frequency Electro-Magnetic Communication Technology Wuhan China Wuhan Second Ship Design and Research Institute Hubei Key Laboratory of Marine Electromagnetic Detection and Control Wuhan China

ISBN: (纸本)9798350342710

The magnetic field signal induced by the submarine will be captured and located by the airborne magnetic probe. In order to improve the survival rate of submarine after being located, a decoy based on the combination of multiple magnets was designed. The decoy is composed of several solenoid coils, which are arranged linearly among different solenoid coils. The rotation Angle, equivalent current and distance between magnets of each solenoid coil are optimized by genetic algorithm. The simulation results show that the degree of fitting between the decoy and the vertical component of the magnetic field of the submarine at a height of 15m reaches 71.6%, and the total length of the control decoy is less than 7m, which has a certain engineering practical value. © 2023 IEEE.

关键词： Genetic algorithms

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Wet‑Spinning Knittable Hygroscopic Organogel Fibers Toward Moisture‑Capture‑Enabled Multifunctional Devices

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Advanced Fiber Materials 2023年第2期5卷 588-602页

作者： Chang Zhang Peng Xiao Dong Zhang Feng Ni Jincui Gu Qingquan Liu Shiao‑Wei Kuo Tao Chen Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Material Technology and EngineeringChinese Academy of SciencesNingbo 315201People’s Republic of China School of Chemical Sciences University of Chinese Academy of ScienceBeijing 100049People’s Republic of China Department of Chemical Biomolecular and Corrosion EngineeringThe University of AkronAkron 44325USA Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China Department of Material and Optoelectronic Science Center of Crystal ResearchNational Sun YatSen UniversityKaohsiung 804TaiwanChina

Atmospheric moisture exploitation is emerging as a promising alternative to relieve the shortage of freshwater and *** to exploit hygroscopic materials featuring flexibility,programmability,and accessibility are crucial to portable and adaptable ***,current two-dimensional(2D)or three-dimensional(3D)-based hygroscopic materials are dif-ficult to adapt to diverse irregular surfaces and meet breathability,which severely hinders their wide applications in wearable and programmable ***,hygroscopic organogel fibers(HOGFs)were designed via a wet-spinning *** achieved fibers were composed of the hydrophilic polymeric network,hygroscopic solvent,and photothermal/antibacterial Ag nanoparticles(AgNPs),enabling hygroscopic capacity,photothermal conversion,and *** to the good knittable feature,the HOGFs can be readily woven to adjusted 2D textiles to function as an efficient self-sustained solar evaporator of 4-layer woven HOGF device with a saturated moisture capacity of 1.63 kg m^(-2) and water-releasing rate of 1.46 kg m^(-2) h^(-1).Furthermore,the 2D textile can be applied as a wearable dehumidification device to efficiently remove the evaporative moisture from human skin to maintain a comfortable *** can reduce the humidity from 90 to 33.4%within 12.5 *** addition,the introduction of AgNPs can also endow the HOGFs with antibacterial features,demonstrat-ing significant potential in personal healthcare.

关键词： Hygroscopic organogel fibers Knittable and wearable Atmospheric moisture sorption Solar-enabled evaporation Antibacterial dehumidification device

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Chloride-binding capacity of mortars composed of marine sand subjected to external chloride penetration

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Journal of Oceanology and Limnology 2022年第4期40卷 1462-1471页

作者： Congtao SUN Ming SUN Tao TAO Feng QU Gongxun WANG Peng ZHANG Yantao LI Jizhou DUAN Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of OceanologyChinese Academy of SciencesQingdao 266071China School of Civil Engineering Qingdao University of TechnologyQingdao 266033China School of Civil Engineering Hunan University of Science and TechnologyXiangtan 411201China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Nantong Research and Development Center of Marine Science and Technology Institute of OceanologyChinese Academy of SciencesNantong 226004China

In order to explore the interactional relations of internal chloride and external chloride-binding amongst the cementitious materials,the chloride-binding capacity of mortars composed of marine sand(MS)or washed marine sand(WMS)were *** indicate that more external chloride can penetrate and diff use more deeply into the WMS mortar than that in the MS *** phenomenon suggests that the external chloride migration resistance due to WMS is lower than that caused by *** distribution trends of the bound chloride content in the two types of mortars are the same at diff erent immersion ***,a signifi cantly decreased area of the bound chloride content exists at the border of the external penetration area(EPA)and the external unaff ected area(EUA)at the immersion ages of 3 and 7 d,and then it disappears gradually with immersion *** WMS mortar can bind more external chloride,whereas the MS mortar can bind more internal chloride,at diff erent immersion *** distributions of bound chloride conversion rate in the EPAs of the two types of mortars diff er across immersion *** distribution fi rstly decreases,and then it increases at the immersion ages of 3 and 7 *** distribution was from increase,then decreases,and increase again at the immersion ages of 28 and 56 *** bound chloride conversion rate in the WMS mortar is aff ected more greatly by external chloride penetration than that in the MS *** amounts of the Friedel’s salt tend to increase with prolonged immersion ***,the penetration of external chloride can increase the amount of fi ne capillary pores smaller than 100 nm in the WMSmortar exposed for 56 d in the chloride salt solution(WMS-E)specimen.

关键词： marine sand mortar chloride binding Friedel’s salt pore structure

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A Bionic Flexible-bodied Underwater Glider with Neutral Buoyancy

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Journal of Bionic Engineering 2021年第5期18卷 1073-1085页

作者： Yaqiang Zhu Yuhong Liu Shuxin Wang Lianhong Zhang Yanhui Wang Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education School of Mechanical EngineeringTianjin UniversityTianjin 300350China The Joint Laboratory of Ocean Observing and Detection Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

The buoyancy of traditional Underwater Glider(UG)with a rigid hull is aff ected by the changing marine parameters,making it difficult for the vehicle to dive deeper with good motion *** the present work,the development of a novel UG for neutral buoyancy,which is equipped with a Flexible-Liquid-Rigid(FLR)composite hull,is *** innovative hull that imitates the buoyancy regulation mechanism of marine organisms is easily adaptable to the changing marine *** rigid part of the composite hull withstands hydrostatic pressure for inner function modules of the *** liquid of the composite hull mainly serves as a buoyancy compensation to mitigate the eff ect of buoyancy variation caused by the changing marine *** flexible covering provides a good hydrodynamic shape for the vehicle under the internal liquid *** buoyancy variation due to the composite hull compression as well as changes of seawater density and temperature was comprehensively considered in the design process and integrated to the dynamic *** addition,sea trials were performed to verify the motion characteristics of the proposed *** results reveal that the Flexible-bodied Underwater Glider(FUG)has a better gliding performance in practice.

关键词： Bio-inspired buoyancy regulation Flexible-bodied vehicle Composite hull Adaptable buoyancy compensation

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