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Online Identification of Lithium-ion Battery Model Parameters with Initial Value Uncertainty and Measurement Noise

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Chinese Journal of Mechanical Engineering 2023年第1期36卷 305-314页

作者： Xinghao Du Jinhao Meng Kailong Liu yingmin zhang Shunli Wang Jichang Peng Tianqi Liu College of Electrical Engineering Sichuan UniversityChengdu610044China School of Electrical Engineering Xi’an Jiaotong University710049Xi’anChina Warwick Manufacturing Group University of WarwickCoventryUK Southwest University of Science and Technology Mianyang621010China Nanjing Institute of Technology Nanjing211103China

Online parameter identification is essential for the accuracy of the battery equivalent circuit model(ECM).The traditional recursive least squares(RLS)method is easily biased with the noise disturbances from sensors,which degrades the modeling accuracy in ***,the recursive total least squares(RTLS)method can deal with the noise interferences,but the parameter slowly converges to the reference with initial value *** alleviate the above issues,this paper proposes a co-estimation framework utilizing the advantages of RLS and RTLS for a higher parameter identification performance of the battery *** converges quickly by updating the parameters along the gradient of the cost *** is applied to attenuate the noise effect once the parameters have *** simulation and experimental results prove that the proposed method has good accuracy,a fast convergence rate,and also robustness against noise corruption.

关键词： Li-ion battery Equivalent circuit model Recursive least squares Recursive total least squares

Integrative analysis of the metabolome and transcriptome reveals the potential mechanism of fruit flavor formation in wild hawthorn(Crataegus chungtienensis)

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Plant Diversity 2023年第5期45卷 590-600页

作者： Xien Wu Dengli Luo yingmin zhang Ling Jin M.James C.Crabbe Qin Qiao Guodong Li Ticao zhang College of Chinese Material Medica Yunnan University of Chinese MedicineKunmingChina Wolfson College Oxford UniversityOxfordUK Institute of Biomedical and Environmental Science&Technology School of Life SciencesUniversity of BedfordshirePark SquareLutonUK School of Life Sciences Shanxi UniversityTaiyuanChina College of Horticulture and Landscape Yunnan Agricultural UniversityKunmingChina

Hawthorns are important medicinal and edible plants with a long history of health protection in *** cultivated hawthorn,other wild hawthorns may also have excellent medicinal and edible value,such as Crataegus chungtienensis,an endemic species distributed in the Southwest of *** this study,by integrating the flavor-related metabolome and transcriptome data of the ripening fruit of ***,we have developed an understanding of the formation of hawthorn fruit *** results show that a total of 849 metabolites were detected in the young and mature fruit of ***,of which flavonoids were the most detected *** the differentially accumulated metabolites,stachyose,maltotetraose and cis-aconitic acid were significantly increased during fruit ripening,and these may be important metabolites affecting fruit flavor ***,several flavonoids and terpenoids were reduced after fruit ripening compared with young ***,using the unripe fruit of *** may allow us to obtain more medicinal active ingredients such as flavonoids and ***,we screened out some differentially expressed genes(DEGs)related to fruit quality formation,which had important relationships with differentially accumulated sugars,acids,flavonoids and *** study provides new insights into flavor formation in wild hawthorn during fruit development and ripening,and at the same time this study lays the foundation for the improvement of hawthorn fruit flavor.

关键词： Hawthorn Crataegus chungtienensis Flavonoids Terpenoids Fruit quality

A Novel Location Method for Interline Power Flow Controllers Based on Entropy Theory

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Protection and Control of Modern Power Systems 2024年第3期9卷 70-81页

作者： Qiuyu Li Baohong Li Qin Jiang Tianqi Liu Yin Yue yingmin zhang Sichuan University the School of Electrical Engineering Sichuan UniversityChengdu 610065China the College of Electrical Engineering and Information Technology Sichuan University

As one of the new generation flexible AC transmission systems(FACTS)devices,the interline power flow controller(IPFC)has the significant advantage of simultaneously regulating the power flow of multiple ***,how to choose the appropriate location for the IPFC converters has not been discussed *** solve this problem,this paper proposes a novel location method for IPFC using entropy *** clarify IPFC’s impact on system power flow,its operation mechanism and control strategies of different types of serial converters are ***,to clarify the system power flow characteristic suitable for device location analysis,the entropy concept is *** this process,the power flow distribution entropy index is used as an optimization *** this index as a foundation,the power flow transfer entropy index is also generated and proposed for the IPFC location determination ***,electromechanical electromagnetic hybrid simulations based on ADPSS are implemented for *** are tested in a practical power grid with over 800 nodes.A modular multilevel converter(MMC)-based IPFC electromagnetic model is also established for precise *** results show that the proposed method can quickly and efficiently complete optimized IPFC location and support IPFC to determine an optimal adjustment in the N-1 fault cases.

关键词： Flexible alternative current transmission systems interline power flow controller modular multi-level converter optimized location method power flow transfer entropy

Relaxation of residual stresses in SiC wafers by annealing

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Rare Metals 2006年第6期25卷 704-708页

作者： CHEN Xiufang XU Xiangang HU Xiaobo LI Juan WANG yingmin JIANG Shouzhen zhang Kai State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China

Residual stresses in SiC wafers, which were introduced during production processes including sawing, lapping, mechanical polishing （MP）, and chemical-mechanical polishing （CMP）, were evaluated in terms of changes in radius of curvature and high-resolution X-ray diffractometer （HRXRD） measurements. It was found that annealing was an effective method to reduce stress fields and to improve the wafer flatness. Lapping process generated more residual stresses than other machining processes, and these stresses could be relaxed by thermal treatment. The results showed that annealing was an essential procedure following lapping in the whole production process. The molten KOH etching results accounted for the correlation between the relaxation of stresses and the creation of basal screw dislocations.

关键词： SiC annealing residual stress mechanical polishing chemical-mechanical polishing

A Research on Emergency DC Power Support Based on DCOI

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Energy and Power Engineering 2013年第4期5卷 869-872页

作者： Fan Fan yingmin zhang Xingyuan Li Wei Ma School of Electrical Engineering and Information Key laboratory of Smart Grid Sichuan University Chengdu China

An integrated scheme of emergency DC power support which is based on dominant center of Inertia DCOI is proposed to improve power system transient stability. The inter-area speed differences equivalent by dominant center of inertia alleviates the main weakness of the traditional signal which is made of the frequencies at both sides and is represent of abnormal information of the nonlinear dynamic behavior of the power system based on a model in which two AC systems are connected by a HVDC Link. Sichuan Power Grid connected with Southwest Power Grid by Deyang-Baoji HVDC project is used to testify the method. The simulation results show that the control strategy can significantly advance the transient stability of AC/DC system through extended equal area criterion (EEAC).

关键词： DCOI Speed Differences EEAC

Relationships Between Parenting Style, Self-Perception and Shyness Among Chinese Early Adolescents

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Psychology Research 2014年第11期4卷 897-904页

作者： Chen yingmin, Wu YunPeng zhang YuanJin Wang Peng Han Lei Gao FengQiang Shandong Normal University Ji'nan China

The current study investigated the parenting style, self-perception, and shyness level of 1,338 junior high school students, so as to explore relationships between these variables. Results indicated that （1） The levels of the unassuming shyness, shyness when facing negative evaluation are higher than other dimensions of shyness; （2） The acceptance/involvement and strictness/supervision are negatively related with shyness; the acceptance/participation and strictness/supervision are positively correlated with self-perception; self-perception was negatively related with shyness; and （3） Parents＇ acceptance/participation can indirectly affect shyness through the self-perception; parents＇ strictness/supervision can affect shyness directly and indirectly through the self-perception.

关键词： shyness, parenting style, self-perception, early adolescents

The Automatic drug screening System Based on High Throughput Protein Crystallographic Beamline（BL17B-SSRF）

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The Automatic drug screening System Based on High Throughput...

含柔性直流电网的交直流系统潮流转移搜索与量化分析

第四届中国结构生物学学术讨论会

作者： Lijie Wu Yijun Gu yingmin zhang Sheng Huang Rongguang zhang Institute of Biochemistry and Cell Biology SIBS CAS Chinese Shanghai Synchrotron Radiation Facility Institute of Biophysics Chinese

Structure-based drug design is a hot spot in drug research area all over the world. Because of the high ability for illustrating the interaction mechanism of protein-protein and protein-ligand in atomic level, protein crystallography, as one of the most important parts of structure-based drug design, is receiving more and more attention. Rather than structure biology, which aims at solving a novel protein structure or a novel protein-protein complex to explicate a task in biology, protein crystallography in structure-based drug design focuses on the interaction between protein and ligand, while the structure of protein may probably be solved before. A highly efficient automatic drug screening system is being designed and will be integrated in the package of user programs of crystallographic beamline BL17 B in Shanghai Synchrotron Radiation Facility（SSRF）. We are developing novel algorithms of automatic data collection, processing and automatic protein structure determination, ligand recognition. High throughput virtual screening will first be applied to enrich small molecules derived from natural products, traditional Chinese medicine, and commercially available compounds;and the drug screening system commits itself to high volume crystallographic screening for the discovery of small molecule ligands. The ligands could be assessed and their structures optimized for further drug development.

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高电压技术 2019年第8期45卷 2553-2561页

作者：张英敏蒋容刘凯曾琦四川大学电气工程学院成都610065 国网四川省电力公司眉山供电公司眉山620020 国网四川省电力公司检修公司成都610041

在直流电网快速发展的时期,研究交直流系统各种故障下潮流转移分布情况具有重要意义。基于直流电网的运行特性,提出了一种适用于交直流电网的潮流转移量化分析方法。首先根据直流电网运行特性将交直流系统等效为交流系统并根据其图论特... 详细信息

在直流电网快速发展的时期,研究交直流系统各种故障下潮流转移分布情况具有重要意义。基于直流电网的运行特性,提出了一种适用于交直流电网的潮流转移量化分析方法。首先根据直流电网运行特性将交直流系统等效为交流系统并根据其图论特性对系统结构进行简化、分区。然后利用Floyd算法搜索潮流转移前k条最短路径。最后,应用分布系数法及等效发电量转移分布系数法分别计算了交流线路断线及换流站功率变化时所搜索出的前k条最短路径中所含支路的潮流转移分布情况。为验证该方法的有效性,将该算法的计算结果与电力系统分析综合程序(PSASP)中的计算结果进行了对比。计算结果表明,所提方法能正确搜索潮流转移路径,且计算潮流与PSASP程序计算结果误差小,为后续交直流系统快速潮流控制奠定了理论基础。

关键词：柔性直流电网潮流转移图论路径搜索分布系数法

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管理创优增产创收节支创效

中国煤炭 2001年第1期27卷 45-46页

作者：张英民兖矿集团鲍店煤矿山东邹城273500

在当前推进深层次的国有企业改革中,由于煤炭总量过剩、市场持续供大于求的影响,煤炭企业遇到了前所未有的困难,经济效益严重滑坡.在这种情况下,如何适应市场经济的要求,探索适合自身发展的有效途径,则成为企业领导者思考的首要问题.

关键词：国有煤炭企业体制改革内部管理管理创新职工积极性