检索结果-内蒙古大学图书馆

2023 China Automation Congress, CAC 2023

作者： Huang, Shiyong Geng, Yuru Han, Yong Gu, Mingfei Nuclear Power Institute of China Chengdu China Nuclear Haichuan Nuclear Technology Co. Ltd Chengdu China School of Network and Communication Engineering Chengdu Technological University Chengdu China Chengdu Vocational & Technical College of Industry Chengdu China Nuclear Power Institute of China Science and Technology on Reactor System Design Technology Laboratory Chengdu China

ISBN: (纸本)9798350303759

In real life, many valuable products and highvalue important products are transported in long distances. Shocks and vibrations are caused during transportation, loading and unloading for various reasons. Any shock and vibration exceeding the regulations may cause damage to the transported products. So, it is necessary to monitor and analyze these data of shocks and vibrations scientifically, while considering that some transportation conditions have special requirements for installation space and transportation time. Therefore, an ultra-thin and long-lasting monitoring system has been developed based on MEMS accelerometer technology to measure shocks and vibrations. After series of independent tests and calibration tests conducted by a third party on the product, the results show that it can record and store the threeaxis acceleration, temperature, humidity, pressure, time and other parameters of the transportation process in real time, and complete the preliminary assessment of the transportation status of high-value products. Then engineers can conduct professional analysis of the data to obtain scientific transportation monitoring reports, and provide scientific basis for taking safety prevention and treatment measures for subsequent transportation. © 2023 IEEE.

关键词： Vibration analysis

来源：评论

学校读者我要写书评

暂无评论

High-Order Coupling Method of Reaction Rate-Nuclide Density Used in Kylin-2 Code

SSRN

引用

SSRN 2022年

作者： Hu, Yuying Liao, Hongkuan Yao, Dong Yu, Yingrui Zhou, Bingyan Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China China

The Projected Prediction-Correction(PPC) method is the most widely used method coupled transport calculation with burnup calculation nowadays, with linear rate(LR) interpolation for normal nuclides and logarithmic linear rate(LLR) interpolation for strong absorbent nuclides. This method has been verified by engineering, and also used in Kylin-2 code. By using PPC method, accurate results could be obtained in the case of detailed division of burnup steps, but the calculation efficiency is not high enough. In this study, the high-order coupling method of reaction rate-nuclide density and its substep calculation method are used to replace the coupling module of Kylin-2 code. By using the high-order coupling and substep calculation to replace parts of transport calculation, the amount of burnup steps is reduced, the calculation time is saved, and the calculation efficiency of Kylin-2 code is improved on the basis of maintaining the whole physical calculation accuracy as much as possible. © 2022, The Authors. All rights reserved.

关键词： Isotopes

来源：评论

学校读者我要写书评

暂无评论

Research on Cylindrical Linear Induction Motor for Drive Mechanism

Research on Cylindrical Linear Induction Motor for Drive Mec...

引用

International Symposium on Linear Drives for Industry Applications (LDIA)

作者： Xu Niu Tianda Yu Lu Zhang Qingzhao Li Siyu Huang Yanting Liu Hao Wu Yuan Tang School of Electrical Engineering Harbin Institute of Technology Harbin China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

The control rod drive mechanism (CRDM) is a kind of servo mechanism for the reactor control system of the nuclear power plant. This paper presents a cylindrical linear induction motor suitable for the CRDM. First, the structure of the CRDM is introduced. Second, the relationship between the main dimensions and the electromagnetic load is derived. Third, the influence of materials of the mover shielding shell, speed, and electromagnetic parameters on the lifting force is analyzed by the finite-element method (FEM). Meanwhile, the steady-state temperature of each component of the CRDM is obtained. Finally, a scaled-down prototype is manufactured to verify the rationality of the design. The test results show that the FEM results are consistent with the experimental results, and the essential functions such as lifting, lower insertion, and maintenance can be realized.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An IGBT Device Health Status Assessment Method Considering the Influence of Operating Conditions

An IGBT Device Health Status Assessment Method Considering t...

引用

IEEE/IAS Industrial and Commercial Power system Asia (I&CPS Asia)

作者： Cheng Yang Zeyu Duan Ran Yao Hui Li Wei Lai Yuan Min Yannan Yuan Wenxing Han State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China ChengDu China

The Insulated Gate Bipolar Transistor (IGBT) is a critical component of power electronic equipment, and its health is of utmost importance to ensure the reliability and stability of the entire system. This paper proposes a method for assessing the health status of IGBT device under various operating conditions. Firstly, a finite element model of the IGBT device is established to analyze the influence of solder layer void and bond line detachment on the saturation voltage of the device. Secondly, the device parameters are simulated under different working conditions, and an adaptive neural network algorithm is used to establish the IGBT equipment health state evaluation model. Finally, the results of the model are analyzed, and the prediction results under random conditions are compared with the simulation results. The results show that this method effectively evaluates the health status of IGBT devices.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A Study of Flow Measurement Uncertainty Quantification Based on Sample Chunked Bayesian Inference

SSRN

引用

SSRN 2024年

作者： Lu, Zihan Zhu, Yudi Zhou, Xinzhi Yu, Junhui Dong, Chenlong Wang, Hailin College of Electronic Information Sichuan University Chengdu610000 China National Key Laboratory of Science and Technology on Reactor System Design Technology Nuclear Power Institute of China Chengdu610213 China

The accuracy of coolant flow measurement of reactor Primary Circuit has a direct impact on the safety and stability of nuclear reactors. However, the presence of errors in the measurement method and instrumentation, as well as the fluid-heat coupling field in the pipeline, leads to a certain degree of uncertainty in the flow measurement. In this paper, an inverse uncertainty quantification method named Sample Chunked Bayesian Inference is proposed based on the establishment of a mathematical model of measurement uncertainty. The proposed method divides the input sample into a number of small samples with single peaks, and then uses each of these as observation sample of Bayesian Inference. The experiments show that the method can effectively quantify the systematic uncertainty and random uncertainty in the measured data. Moreover, compared with the traditional method that use input sample directly as observation sample, the proposed method has higher quantization accuracy. © 2024, The Authors. All rights reserved.

关键词： Bayesian networks

来源：评论

学校读者我要写书评

暂无评论

Characteristic Analysis of a Cylindrical Linear Motor for Drive Mechanism

Characteristic Analysis of a Cylindrical Linear Motor for Dr...

引用

International Conference on Electrical Machines and systems (ICEMS)

作者： Xu Niu Tianda Yu Lu Zhang He Zhang School of Electrical Engineering Harbin Institute of Technology Harbin China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

The control rod drive mechanism (CRDM) is a critical device in nuclear plants. This paper proposes a kind of CRDM applying the cylindrical linear induction motor (CLIM). First, the structure and the working principle are introduced. Second, the finite-element method (FEM) is applied to analyze the electromagnetic characteristics of CRDM. The lifting force variation curves with different electromagnetic and structural parameters are obtained. Third, the thermal analysis is carried out by FEM. The steady-state thermal distribution and temperature of each component of CRDM are obtained. All the above results show that the proposed CRDM can meet the design criteria and such functions as rising, falling, and holding still.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research on the Remaining Useful Life Prediction Model of Complex Equipment

Research on the Remaining Useful Life Prediction Model of Co...

引用

Artificial Intelligence and Intelligent Manufacturing (AIIM), International Symposium on

作者： Lei Tang Yifei Tang Junhao Zhang Mengjuan Liu Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu China Glasgow College University of Electronic Science and Technology of China Chengdu China

ISBN: (数字)9798331541729

ISBN: (纸本)9798331541736

With the rapid advancement of artificial intelligence technology, the development of intelligent manufacturing has become an inevitable trend. Utilizing AI technology to ensure the safe operation of factories is a crucial aspect of smart factories. In particular, research focused on fault diagnosis and remaining useful life (RUL) prediction models based on machine learning has garnered significant attention from both academia and industry. This paper explores RUL prediction models for complex equipment, introduces four representative models, and analyzes their performance using two benchmark datasets, C-MAPSS and N-CMAPSS. Finally, the paper discusses the future research and application trends of artificial intelligence technology in complex equipment operation and maintenance.

关键词： Fault diagnosis Training Analytical models Machine learning Predictive models Market research Production facilities Maintenance Monitoring Smart manufacturing

来源：评论

学校读者我要写书评

暂无评论

design of an All-Fiber Fabry-Perot Sensor for Strain Measurement in Radiative Environment

引用

Photonic Sensors 2022年第4期12卷 81-90页

作者： Tingting YANG Zengling RAN Xiu HE Lupeng GAN Zhengxi HE Jialiang ZHU Peng HE Zhuoyue LI Dong SUN Key Laboratory of Optical Fiber Sensing&Communications(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 611731China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610213China School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

A length-matched micro Fabry-Perot(FP)interferometer is proposed for strain measurement under irradiation *** simulation shows that a well length-matched FP sensor can achieve a very low drift of the cavity length and strain sensitivity in irradiation *** experiment,such an FP cavity is realized by laser *** shows a low cavity length drift of−0.037μm and a strain sensitivity deviation of 0.52%,respectively,under gamma ***,the intensity of interference fringes is also *** a result,such a length-matched FP cavity is a very promising candidate for strain sensing in radiative environments.

关键词： Gamma radiation Fabry-Perot sensor radiation-induced compaction strain sensing

来源：评论

学校读者我要写书评

暂无评论

Optimized Moderator design and Analysis of a Pin-Type Supercritical Carbon Dioxide reactor Based on reactor Monte Carlo Code

Optimized Moderator Design and Analysis of a Pin-Type Superc...

引用

作者： Zhao, Xingyu Liu, Minyun Cui, Rongyi Huang, Shanfang Wang, Kan Lu, Chuan Department of Engineering Physics Tsinghua University Beijing100084 China Department of Engineering Physics Tsinghua University Beijing100084 China China Nuclear Power Engineering Co. Ltd. Beijing100840 China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu610213 China

This study analyzed an yttrium hydride (YH2) moderated supercritical carbon dioxide cooled reactor loaded with pin-type, beryllium oxide diluted oxide fuel elements to reduce the critical enrichment. The impact of the YH2 on the coolant void reactivity was studied along with a moderator zoning scheme to flatten the radial power distribution. The YH2 was added as hexagonal moderating rods at the center of the fuel assemblies. The core was modeled using the continuous-energy reactor Monte Carlo code (RMC) with the on-the-fly cross sections treatment. The results showed that the YH2 moderator increased the thermal fission and reduced the critical enrichment of the core with the same diluent volume fraction by more than 30%. The YH2 moderator significantly softened the neutron energy spectrum and reduced the neutron leakage upon core voiding, resulting in both a weaker positive spectral reactivity feedback and a weaker negative leakage reactivity feedback during core depressurization. For an UO2-loaded core, the YH2 gave a lower negative coolant void reactivity, while for a mixed oxide fuel (MOX)-loaded core with diluent volume fractions smaller than 35%, the spectral feedback was more important and the YH2 strongly reduced the positive coolant void reactivity to less than $1. Arranging the YH2 in the peripheral assemblies reduced the radial power peaking factor to 1.319. The study shows that the YH2 moderator can reduce the critical enrichment, make the core less sensitive to voiding, and can flatten the radial power distribution of a single-enrichment core through moderator zoning. [DOI: 10.1115/1.4056772] © 2023 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： Carbon dioxide

来源：评论

学校读者我要写书评

暂无评论

Computational homogenization of thermomechanical properties for Fully Ceramic Microencapsulated fuel with 3D printed SiC matrix

引用

Annals of Nuclear Energy 2025年 222卷

作者： Chen, Yiwen Lu, Qi Liu, Changwen Li, Wei Zhang, Dalin Su, G.H. State Key Laboratory of Multiphase Flow in Power Engineering Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology School of Nuclear Science and Technology Xi'an Jiaotong University Xi'an710049 China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu61213 China State Key Laboratory for Strength and Vibration of Mechanical Structures Xi'an Jiaotong University Xi'an710049 China

Fully Ceramic Microencapsulated (FCM) fuel, fabricated using 3D printing technology, incorporates traditional Tristructural-Isotropic (TRISO) fuel particles embedded within a 3D-printed SiC matrix. This fuel type shows great potential for compact, high-temperature nuclear reactors. However, comprehensive performance analysis remains challenging due to the multilayered structure, complex material properties, and the irradiation behavior of numerous TRISO particles within the matrix. To address these challenges, this study aims to apply finite element (FE)-based computational homogenization to evaluate the fuel's thermomechanical properties. First, a detailed finite element analysis (FEA) of a single TRISO particle's performance was conducted, focusing primarily on the Buffer-IPyC gap size change during irradiation, a critical factor influencing the fuel's thermal performance. Second, the homogenization of a single TRISO particle was performed using FEA, accounting for the changes in the Buffer-IPyC gap size. Finally, homogenized TRISO particles were randomly distributed and perfectly bonded within a 3D-printed SiC matrix to form a Representative Volume Element (RVE). The FE homogenization of the RVE was then conducted to derive the effective thermomechanical properties of the FCM fuel. The packing fraction of TRISO particles in the matrix ranged from 10 % to 50 %, with temperature and burnup conditions spanning 800–1600 K and 0–16 % FIMA, respectively. Results show that irradiation significantly affects the effective properties of the fuel, though this impact diminishes as burnup increases. Additionally, the effective thermal conductivity of the FCM fuel decreases with increasing TRISO packing fraction, assuming the thermal conductivity of the SiC matrix exceeds that of TRISO particles. This study provides a valuable reference for the design and optimization of FCM fuel for future nuclear applications. © 2025 Elsevier Ltd

关键词： Thermal conductivity of solids

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：