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智能制造专题主编寄语

Engineering 2021年第6期 7-10页

作者：李培根 Vladimir Marik 高亮沈卫明 The State key laboratory of Digital Manufacturing equipment and Technology School of Mechanical Science and Engineering Huazhong University of Science and Technology Czech Institute of Informatics Robotics and Cybernetics Czech Technical University in Prague

智能制造是制造业发展的一大趋势,其核心是新一代信息通信技术(如5G、人工智能、工业互联网等)与先进制造技术的深度融合。智能制造涵盖产品的全生命周期,包括产品的设计、生产、物流、服务、回收等阶段,人在其中起到重要作用。本期智...

智能制造是制造业发展的一大趋势,其核心是新一代信息通信技术(如5G、人工智能、工业互联网等)与先进制造技术的深度融合。智能制造涵盖产品的全生命周期,包括产品的设计、生产、物流、服务、回收等阶段,人在其中起到重要作用。本期智能制造专题收录了智能制造领域的部分最新研究成果,将有力促进该领域的快速发展。本专题包含8篇论文,其中1篇观点论文和7篇研究论文,

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Open-Circuit Faults Diagnosis in Direct-Drive PMSG Wind Turbine Converter

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Energy Engineering 2021年第5期118卷 1515-1535页

作者： Wei Zhang Qihui Ling Qiancheng Zhao Hushu Wu Engineering Research Center of Hunan Province for the Mining and Utilization of Wind Turbines Operation Data Hunan University of Science and TechnologyXiangtan411201China School of mechanical Engineering Hunan University of Science and TechnologyXiangtan411201China XEMC Wind Power Co. Ltd.Xiangtan411201China

The condition monitoring and fault diagnosis have been identified as the key to achieving higher availabilities of wind *** studies show that the open-circuit fault is a significant contributor to the failures of wind turbine ***,the multiple faults combinations and the influence of wind speed changes abruptly,grid voltage sags and noise interference have brought great challenges to fault ***,concerning the open-circuit fault of converters in direct-driven PMSG wind turbine,a diagnostic method for multiple open-circuit faults is proposed in this paper,which is divided into two tasks:The first one is the fault detection and the second one is the fault *** detection method is based on the relative current residuals after exponential transformation and on an adaptive threshold,and the localization method is based on the average values of fault phase *** scheduled diagnosis method is available to both the generator-side converter and the grid-side converter,allowing to detect and locate single and double open-circuit *** validating this,robustness test and multiple open-circuit faults diagnosis are presented in a 2-MW direct-driven PMSG wind turbine system,the results validate the reliability and effectiveness of the proposed method.

关键词： Wind turbine converter open-circuit fault fault diagnosis exponential transformation

Design and experimental research on disc-type seeding device for single-bud sugarcane seeds

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International Journal of Agricultural and Biological Engineering 2023年第2期16卷 115-124页

作者： Xinpeng Liu Zhaojun Niu Ming Li Mingxin Hou Lijiao Wei Yuan Zhang Li Huang South Subtropical Crop Research Institute China Academy of Tropical Agricultural SciencesZhanjiang 524091GuangdongChina Chinese Academy of Tropical Agricultural Sciences Institute of Agricultural Machinery ResearchZhanjiang 524091GuangdongChina Guangdong Ocean University School of Mechanical and Power EngineeringZhanjiang 524091GuangdongChina

Mechanized sugarcane seeding is one of the effective technical measures for improving seeding uniformity and operation ***,the imperfection of supporting equipment limits the promotion and application of this *** there are some problems in domestic sugarcane planting machines currently,such as large auxiliary labor,high labor intensity,low seeding uniformity,and large amount of seeds,a disc-type single-bud sugarcane seed metering device was innovatively designed on the basis of the analysis of physical properties of single-bud sugarcane seeds and the combination with agronomic requirements for field planting in this *** was used to simulate and analyze the mechanism,check the theoretical parameters,and process the test *** single-factor experiments,the effective factors affecting seeding uniformity were determined.A multi-factor orthogonal rotation test was designed,data were collected and then SPSS was used to get the optimal parameters for the seeding uniformity:the advancement speed of machine is 0.22 m/s,the number of disc seeding grooves is 10,the rotating disc speed is 0.18 r/s,and the seeding uniformity is 86.2%;the seeding uniformity was verified by field trial,and the results showed that the average seeding uniformity of the field verification was 83%,with the error 3.2% relative to the optimization *** relative error is within 10%,indicating that the optimization result is reliable and meets the requirements of seeding uniformity,thus providing theoretical basis for the research and development of the disc-type single-bud seeding device.

关键词： sugarcane single-bud sugarcane seed disc-type seeding device seeding uniformity

Stress-deconcentrated ultrasensitive strain sensor with hydrogen-bonding-tuned fracture resilience for robust biomechanical monitoring

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Science China Materials 2022年第8期65卷 2289-2297页

作者： Yizhuo Yang Wenjie Tang Jinyi Wang Ruiqing Liu Ping Yang Shisheng Chen Yuehui Yuan Jingfeng Xu Xueyang Ren Shancheng Yu Hao Wu Yunfan Zhou Leili Zhai Xiaodong Shao Zenan Chen Benhui Hu School of Biomedical Engineering and Informatics Nanjing Medical UniversityNanjing 211166China Nanjing Drum Tower Hospital The Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China School of Materials and Engineering Nanjing Institute of TechnologyNanjing 211167China The Affiliated Eye Hospital of Nanjing Medical University Nanjing 210029China Jiangsu key laboratory of Xenotransplantation Nanjing Medical UniversityNanjing 211166China

Recently,rapid advances in flexible strain sensors have broadened their application scenario in monitoring of various mechanophysiological *** various strain sensors,the crack-based strain sensors have drawn increasing attention in monitoring subtle mechanical deformation due to their high ***,early generation and rapid propagation of cracks in the conductive sensing layer result in a narrow working range,limiting their application in monitoring large biomechanical ***,we developed a stress-deconcentrated ultrasensitive strain(SDUS)sensor with ultrahigh sensitivity(gauge factor up to2.3×10^(6))and a wide working range(0%-50%)via incorporating notch-insensitive elastic substrate and microcrack-tunable conductive ***,the highly elastic amine-based polymer-modified polydimethylsiloxane substrate without obvious hysteresis endows our SDUS sensor with a rapid response time(2.33 ms)to external *** accurate detection of the radial pulse,joint motion,and vocal cord vibration proves the capability of SDUS sensor for healthcare monitoring and human-machine communications.

关键词： flexible strain sensor microcrack mechanophysiological signal monitoring ultrahigh sensitivity wide working range

Piezoelectric Energy Harvesting From Asphalt Pavements Deformation Under Various Traffic Flows

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Piezoelectric Energy Harvesting From Asphalt Pavements Defor...

Complex integrity constraint discovery: measuring trust in modern intelligent railroad systems

2018年全国固体力学学术会议

作者： Yangyang Zhang Yisheng Chen 吕朝锋 Ji Wang Department of Civil Engineering Zhejiang University Faculty of mechanical Engineering and Mechanics Ningbo University

Piezoelectric energy harvesting from asphalt pavements deformation has received much attention due to potential applications on self-powered monitoring systems for roads, bridges or other civil infrastructure facilities. The influences of weight and speed of a single vehicle load on the open-circuit voltage of the harvesters have been investigated experimentally by many researchers. However, the output power, key measures for evaluating the efficiency of these harvesters, were ignored in many in-situ and laboratory experimental studies. So the quantitative dependence of output power upon the parameters of this kind of energy harvesters and traffic flows is still unclear, which brings great challenges for the energy harvesting systems designation in practical applications. In this study, a generalized theoretical model is developed to calculate and optimize the output power of piezoelectric energy harvesters embedded in asphalt pavements under the two most common traffic flow conditions, e.g. urban roads and highway roads. By employing the scaling law methodology, we find that distinguished strategies exit for optimization the output power of the energy harvesters under aforementioned two traffic flow conditions. The result of this paper may provide a generalized guideline for designation of piezoelectric energy harvesting systems under various traffic flows.

关键词： Piezoelectric energy harvesting Asphalt pavement Traffic flow

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2022年第10期23卷 832-837页

作者： Wen-tao HU Da-wei JIANG Sai WU Ke CHEN Gang CHEN key Lab of Intelligent Computing Based Big Data of Zhejiang Province Zhejiang UniversityHangzhou 310027China

1Introduction Data are at the heart of intelligent rail systems in the high-speed transportation sector(Zhou et al.,2020;Ho et al.,2021;Hu et al.,2021;Chen et al.,2022).The core of modern intelligent railroad systems typically includes rail transportation and equipment monitoring models learned from large datasets,which are often optimized for specific data and workloads(Zhu et al.,2019;Tan et al.,2020).While these intelligent railroad systems have been widely adopted and successful,their reliability and proper function will change as the data used *** the data used(on which the system operates)deviates from the fundamental constraints of the initial data(on which the system is trained)then,in that case,the system performance degrades,and the results inferred by the system model become unreliable,so the system model must be retrained and redeployed to re-store reliable inference results(Sharma and Chandel,2013).The mechanism for assessing the trustworthiness of intelligent rail system inferences is of paramount importance,especially for rail systems performing safety-critical or high-impact operations.

关键词： constraint intelligent operations

Arduino-based low-cost electrical load tracking system with a long-range mesh network

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Advances in Manufacturing 2021年第1期9卷 47-63页

作者： Xin-Lin Wang Bora Ha Frank Andrew Manongi Woo-Kyun Jung Yusufu Abeid Chande Jande Sung-Hoon Ahn Department of mechanical and Aerospace Engineering Seoul National UniversitySeoulSouth Korea School of Materials Energy Water and Environment and Environmental Sciences Nelson Mandela African Institution of Science and TechnologyArushaTanzania Water Infrastructure and Sustainable Energy Futures Centre Nelson Mandela African Institution of Science and TechnologyArushaTanzania Institute of Advanced Machinery and Design Seoul National UniversitySeoulSouth Korea

A system that combines the advantage of the long-range(LoRa)communication method and the structural characteristics of a mesh network for an LoRa mesh network-based wireless electrical load tracking system is *** system demonstrates considerable potential in reducing data loss due to environmental factors in farfield wireless energy *** proposed system can automatically control the function of each node by confirming the data source and eventually adjust the system structure according to real-time monitoring data without manual *** further improve the sustainability of the system in outdoor environments,a standby equipment is designed to automatically ensure the normal operation of the system when the hardware of the base station *** system is based on the Arduino board,which lowers the production cost and provides a simple manufacturing *** conducting a long-term monitoring of a near-field smart manufacturing process in South Korea and the far-field energy consumption of rural households in Tanzania,we have proven that the system can be implemented in most regions,neither confined to a specific geographic location nor limited by the development of local *** system comprises a smart framework that improves the quality of energy ***,the proposed big-data-technology-based power supply policy offers a new approach for prolonging the power supply time of off-grid power plants,thereby providing a guideline for more rural areas with limited power sources to utilize uninterrupted electricity.

关键词： Mesh network Wireless electrical load tracking system Sustainability Off-grid power plant

Field experiment using transient energy method to locate a single-phase to ground fault

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Global Energy Interconnection 2020年第6期3卷 585-594页

作者： Wei Xie Xuewen Wang Chen Fang Hengxu Zhang Fang Shi Xiaodong Xing Baicong Sun State Grid Shanghai Municipal Electric Power Company No.1122 Yuanshen RoadShanghai Scan for more details 200122P.R.China State Grid Chongqing Electric Power Research Institute No.80 Huangshan RoadChongqing 401123P.R.China key laboratory of Power System Intelligent Dispatch and Control(Ministry of Education) Shandong UniversityNo.17923 Jingshi RoadJinan 250061P.R.China State Grid Shanghai Electric Power Research Institute No.171 Handan RoadShanghai 200233P.R.China

Distribution networks in China and several other countries are predominantly neutral inefficiently grounding systems(NIGSs),and more than 80%of the faults in distribution networks are single-phase-to-ground(SPG)*** of the weak fault current and imperfect monitoring equipment configurations,methods used to determine the faulty line secti ons with SPG faults in NIGSs are in *** developme nt and application of distributi on-level phasor measurement units(PMUs)provide further comprehensive fault information for fault diagnosis in a distribution *** an SPG fault occurs,the transient energy of the faulted line section tends to be higher than the sum of the transient energies of other line *** this regard,transient energy-based fault location algorithms appear to be a promising *** this study,a field test plan was designed and implemented for a 10 kV distribution *** test results dem on strate the effective ness of the transient en ergy-based SPG locati on method in practical distributi on networks.

关键词： Sin gle-phase-to-gro und fault Fault location Neutral in efficiently groundi ng systems Distributi on n etwork Distribution-level PMU Transient energy.

Integrating Electronic Systems for Requesting Clinical laboratory Test into Digital Clinical Records: Design and Implementation

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health 2017年第4期9卷 622-639页

作者： Félix Gascón Luna Isidoro Herrera Contreras Antonio Cruz Guerrero Francisco Bermudo Guitarte Department of Clinical laboratory “Valle de los Pedroches” Hospital Córdoba Spain Department of Clinical laboratory Hospital Complex Jaén Spain

Clinical laboratory tests are basic elements that support healthcare tasks such as disease detection, diagnosis and monitoring of response to treatments. Current laboratory information systems focus on the patient database, tests and results, with multiple modules available, connecting with the various analytical systems or work areas. However laboratory information systems functioned as “islands of information”, because their design was fundamentally inward-looking and disconnected from other healthcare computer applications. Actually, the Electronic health Register (EHR) is considered by clinicians as a tool with great potential healthcare benefits. The EHR, in the sense of a unique and complete record of a patient’s healthcare and state of health, regardless of the healthcare level used, is a real attempt to eliminate these “islands of information” and need modules to act as “bridges” with the laboratory information systems. This type of module, which in generic terms may be referred to as a laboratory test request module, has become an essential feature of the EHR. These modules need to use a laboratory coding system as a common language for exchanging information, ensuring that tests and results are unequivocally identified. The development of the laboratory test request module requires the commitment of professionals and political authorities, being necessary time for their design and an adequate pilot phase. The laboratory professionals have to assume a leadership role in the whole process of design, development and implementation of these modules, integrating in the equipment of information technologies of healthcare providers. In our manuscript we review the elements that may prove electronic systems for requesting clinical laboratory test into digital clinical records and the key elements to move from theory to practice.

关键词： Electronic health Records laboratory Information Systems Test Request Module Medical Order Entry Systems Systems Integration laboratory Test Codes Systematic Nomenclature