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Multi-Scale Fusion Model Based on Gated Recurrent Unit for Enhancing Prediction Accuracy of State-of-Charge in Battery Energy Storage Systems

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 405-414页

作者： hao Liu Fengwei Liang Tianyu Hu Jichao Hong huimin Ma School of Computer and Communication Engineering University of Science and Technology BeijingBeijingChina School of Mechanical Engineering University of Science and Technology BeijingBeijingChina IEEE

Accurate prediction of the state-of-charge(SOC)of battery energy storage system(BESS)is critical for its safety and lifespan in electric *** overcome the imbalance of existing methods between multi-scale feature fusion and global feature extraction,this paper introduces a novel multi-scale fusion(MSF)model based on gated recurrent unit(GRU),which is specifically designed for complex multi-step SOC prediction in practical *** correlation analysis is first employed to identify SOC-related *** parameters are then input into a multi-layer GRU for point-wise feature ***,the parameters undergo patching before entering a dual-stage multi-layer GRU,thus enabling the model to capture nuanced information across varying time ***,by means of adaptive weight fusion and a fully connected network,multi-step SOC predictions are *** extensive validation over multiple days,it is illustrated that the proposed model achieves an absolute error of less than 1.5%in real-time SOC prediction.

关键词： Electric vehicle battery energy storage system(BESS) state-of-charge(SOC)prediction gated recurrent unit(GRU) multi-scale fusion(MSF).

A multi-parameter model of heat treatment process for soft magnetic materials on performance of HSERs

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Chinese Journal of Aeronautics 2022年第9期35卷 379-388页

作者： Jiaxin YOU hao YU huimin LIANG Yong XIE Ding DING Department of Electrical Engineering Harbin Institute of TechnologyHarbin 150000China G&A Electronics Co. LtdGuilin 541000China

Abstract:Material properties play an important role in the performance of electromagnetic mechanism. For an aeronautic Hermetically-Sealed Electromagnetic Relay(HSER), more than 50%parts are made of soft magnetic materials. Therefore, the performance of soft magnetic materials directly determines the static and dynamic characteristics of the HSER. Based on the theory of crystal recrystallization, this paper analyzes cold extrusion and heat treatment in the processing of soft magnetic materials, simulates the grain change process of an armature at different heat treatment temperatures, establishes a correlation model of temperature, grain size, and magnetic energy,and verifies results by scanning electron microscopy. Results of heat treatment temperatures from 800 ℃to 920 ℃are obtained and compared. A sample soft magnetic material after heat treatment at different temperatures has the largest difference in the initial magnetization range, up to 22%. In order to verify the fluctuation of the overall output characteristics of an HSER caused by the difference between soft magnetic materials, a static and dynamic analysis model of a typical HSER is established, and the accuracy of the model is verified by a set of actual test system. The difference of dynamic characteristics under different heat treatment temperatures is nearly 3%.

关键词： Dynamic performance Heat treatment Hermetically-Sealed Electromagnetic Relay(HSER) Metallographic analysis Soft magnetic materials

Drawing on the Development Experiences of Infectious Disease Surveillance Systems Around the World

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China CDC weekly 2024年第41期6卷 1065-1074页

作者： huimin Sun Weihua Hu Yongyue Wei Yuantao hao Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijingChina Peking University Center for Public Health and Epidemic Preparedness&Response BeijingChina Key Laboratory of Epidemiology of Major Diseases(Peking University) Ministry of EducationBeijingChina.

High-quality infectious disease surveillance systems are foundational to infectious disease prevention and *** major infectious disease surveillance systems globally can be categorized as either indicatorbased,which are more specific,or event-based,which are more *** surveillance systems commonly utilize multi-source data,strengthened information sharing,advanced technology,and improved early warning accuracy and *** experience may provide valuable insights for ***’s existing infectious disease surveillance systems require urgent enhancements to monitor emerging infectious diseases and improve the integration and learning capabilities of early warning *** such as establishing multi-stage surveillance systems,promoting cross-sectoral and cross-provincial data sharing,applying advanced technologies like artificial intelligence,and cultivating professional talent should be adopted to enhance the development of intelligent and multipoint-triggered infectious disease surveillance systems in China.

关键词： China strengthened utilize

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快递企业中转中心分拣人员配置优化

物流技术 2019年第6期38卷 127-129页

作者：刘行超陈爱玲郝慧敏王婧山东高速标准箱物流有限公司山东济南250013 山东财经大学管理科学与工程学院山东济南250014

以S快递企业济南中转中心为研究对象,调查与分析中转中心所存在的分拣人员配置不合理问题,建立数学模型对分拣人员配置进行重新优化,通过优化配置,使得中转中心能够以最少的分拣人员完成分拣任务,提高了中转中心的运行效率,减低了企业... 详细信息

以S快递企业济南中转中心为研究对象,调查与分析中转中心所存在的分拣人员配置不合理问题,建立数学模型对分拣人员配置进行重新优化,通过优化配置,使得中转中心能够以最少的分拣人员完成分拣任务,提高了中转中心的运行效率,减低了企业的运营成本。

关键词：快递企业中转中心分拣人员配置优化

Microstructure and properties of high emissivity coatings

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Journal of University of Science and Technology Beijing 2008年第5期15卷 627-632页

作者： Zhigang Dan Daqiang Cang huimin Zhou hao Bai Yanbin Zong Chinese Research Academy of Environmental Sciences Beijing 100012 China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China Shangdong huimin Technology Development Company Jinan 250100 China

A new coating on lining in industrial furnace for energy saving has been developed. Properties and microstructure of the coatings were revealed by emissivity instrument,X-ray diffraction （XRD）,transmission electron microscope （TEM） and scanning electron microscope （SEM）,respectively. The result indicates that the emissivity of coatings is higher than 0.90 and the thickness of coatings is about 200 μm. ZrO2,Cr2O3 and SiC in the coating benefit practical applications of coatings at high temperature with durable high emissivity and the continuous structure between the coatings and the substrate makes the coatings high cohesion and excellent adhesion for both specimens with and without sintering at high temperature. Result from laboratory experiment shows that the heating speed of specimen with coating is higher than that of controlled specimen and the temperature increases 30°C during the heating. The average temperature drop of specimen with coatings has a 13.5% improvement in the cooling speed. The application of coatings on the checker brick in a blast furnace of 1750m^3 indicates that the coating causes the blast temperature to an average increase of 28°C,reduces the fluctuation of blast temperature before the blowing-in and leads to a fuel saving of 10% approximately.

关键词： high emissivity coatings industrial furnace energy saving

产学协同育人背景下“物流系统仿真”课程教学改革探索

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科技风 2024年第6期 119-121页

作者：张博高迪郝慧敏王改丽杨健新疆工程学院新疆乌鲁木齐830000 新疆硕隆科技有限公司新疆乌鲁木齐830004

文章在产学协同育人背景下,分析了当前“物流系统仿真”课程教学的现状与不足,并通过课程大纲制定、课程导入、课程教学方式以及课程考核四个方面进行改革探索,以学生为中心深入实施产学合作,旨在完善专业课程建设的同时,构建产学协同... 详细信息

文章在产学协同育人背景下,分析了当前“物流系统仿真”课程教学的现状与不足,并通过课程大纲制定、课程导入、课程教学方式以及课程考核四个方面进行改革探索,以学生为中心深入实施产学合作,旨在完善专业课程建设的同时,构建产学协同育人新模式,培养行业及企业所需人才,从而实现应用型人才培养目标。

关键词：产学协同物流系统仿真教学改革

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青少年特纳综合征神经心理特征的临床分析

中华实用儿科临床杂志 2024年第11期39卷 858-861页

作者：刘晓景郝会民高静袁淑娴刘素华陈永兴丁敏利钱秋谨卫海燕河南省儿童医院内分泌遗传代谢科郑州450018 北京大学第六医院儿童精神学研究室北京100191

目的分析河南省儿童医院近5年管理的410例青少年特纳综合征(TS)患儿发生神经认知异常及相关情绪行为问题的状况,并探讨其与染色体核型、青春期发育状况及激素替代治疗的相关性。方法回顾性病例系列研究。选取2018年6月至2023年6月在河... 详细信息

目的分析河南省儿童医院近5年管理的410例青少年特纳综合征(TS)患儿发生神经认知异常及相关情绪行为问题的状况,并探讨其与染色体核型、青春期发育状况及激素替代治疗的相关性。方法回顾性病例系列研究。选取2018年6月至2023年6月在河南省儿童医院内分泌遗传代谢科门诊或病房通过染色体核型或免疫原位杂交(FISH)确诊的410例青少年TS患儿,根据年龄分为0.05),言语理解指数、工作记忆指数比较差异均有统计学意义(H=7.697、9.694,均P0.05)。结论TS患儿智力水平总体较低,在儿童期有ADHD的倾向,处于青春发育期的TS患儿抑郁倾向发生率高,TS患儿青春期发育状况及激素替代治疗与神经精神疾病的发生无相关性。

关键词：特纳综合征注意缺陷多动障碍抑郁症

基于EIS的质子交换膜燃料电池输出性能优化

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科技和产业 2023年第18期23卷 168-176页

作者：姚赵祎莫荣佳蒋栋郝慧敏武志斐太原理工大学机械与运载工程学院太原030024

质子交换膜燃料电池(proton exchange membrane fuel cell, PEMFC)输出性能的影响是多方面的,极化曲线仅能反映燃料电池稳态外输出特性,不能充分反映具体影响因素及规律,因此需研究其内部物理参数的动态变化。通过建立电堆内阻和交流阻... 详细信息

质子交换膜燃料电池(proton exchange membrane fuel cell, PEMFC)输出性能的影响是多方面的,极化曲线仅能反映燃料电池稳态外输出特性,不能充分反映具体影响因素及规律,因此需研究其内部物理参数的动态变化。通过建立电堆内阻和交流阻抗特性模型,利用电化学交流阻抗谱(electrochemical impedance spectroscopy, EIS)分析不同温度和湿度下燃料电池的内阻动态特性。结果表明,在333~353 K温度范围内,随着温度的增加,燃料电池的内阻减小;当温度不变时,相对湿度的增加能减小电堆内阻,燃料电池输出性能增强。最后,基于15 kW燃料电池测试平台进行性能试验,验证了燃料电池动态特性分析的正确性,为进一步优化PEMFC输出性能提供理论支持。

关键词：质子交换膜燃料电池温度湿度内阻等效电路电化学交流阻抗谱

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基于PVDF压电薄膜的能量收集系统研究

化工新型材料 2023年第1期51卷 76-80页

作者：田红英王沛元郝慧敏李晨阳侯永胜王嘉鋆吕高鹏太原理工大学机械与运载工程学院太原030000 山西工程职业学院自动化工程系太原030000

压电能量收集系统作为一种自发电系统,可以将施加在系统上的压力转换为可供负载使用的电能。以100μm厚的PVDF薄膜作为压电能量收集系统的能量来源,以电学与力学为基础,设计了一种基于PVDF薄膜的压电能量收集系统;用ANSYS软件建立模型仿... 详细信息

压电能量收集系统作为一种自发电系统,可以将施加在系统上的压力转换为可供负载使用的电能。以100μm厚的PVDF薄膜作为压电能量收集系统的能量来源,以电学与力学为基础,设计了一种基于PVDF薄膜的压电能量收集系统;用ANSYS软件建立模型仿真,用origin软件处理PVDF薄膜输出信号参数,确定了箱式结构下的压电薄膜双并联结构;设计了采用三倍压电路的基于LTC3588芯片的能量收集电路,使得能量采集效率提升了3倍。

关键词：自发电双并联结构能量收集系统压电性