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A comparative study of different online model parameters identification methods for lithium-ion battery

Science China(Technological Sciences) 2021年第10期64卷 2312-2327页

作者： zhang shuzhi zhang XiongWen MOE Key Laboratory of Thermo-Fluid Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

Precise states estimation for the lithium-ion battery is one of the fundamental tasks in the battery management system(BMS),where building an accurate battery model is the first step in model-based estimation *** date,although the comparative studies on different battery models have been performed intensively,little attention is paid to the comparison among different online parameters identification methods regarding model accuracy,robustness ability,adaptability to the different battery operating conditions and computation *** this paper,based on the Thevenin model,the three most widely used online parameters identification methods,including extended Kalman filter(EKF),particle swarm optimization(PSO),and recursive least square(RLS),are evaluated comprehensively under static and dynamic *** is worth noting that,although the built model’s terminal voltage may well follow a measured curve,these identified model parameters may significantly out of reasonable range,which means that the error between measured and predicted terminal voltage cannot be seen as a gist to determine which model is the most *** evaluate model accuracy more rigorously,battery state-of-charge(SOC)is further estimated based on identified model parameters under static and dynamic *** SOC prediction results show that EKF and RLS algorithms are more suitable to be used for online model parameters identification under static and dynamic tests,***,the random offset is added into originally measured data to verify the robustness ability of different methods,whose results indicate EKF and RLS have more satisfactory ability against imprecisely sampled data under static and dynamic tests,*** model accuracy,robustness ability,adaptability to the different battery operating conditions and computation cost simultaneously,EKF is recommended to be adopted to establish battery model in real application among these three most widely used met

关键词： lithium-ion battery Thevenin model online model parameters identification methods state-of-charge comprehensive performance

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Geochronology and geochemistry of the ore-bearing intrusion in the Longgen Lead-Zinc deposit in Tibet and its geological significance

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Acta Geologica Sinica(English Edition) 2017年第S1期91卷 105-106页

作者： zhang shuzhi GAO Shunbao zhang Yongchao LUAN Kang JIANG Xiaojia School of Earth Science and Resources China University of GeosciencesBeijing 10083 Geological Survey China University of GeosciencesWuhanHubei 430074 Faculty of Earth Resources China University of GeosciencesWuhanHubei 430074

1 Introduction The Longgen Lead-Zinc deposit is located in the southern Gangdise-Nyainqentantanglha plate and belongs to the western section of the Nyainqentantanglha copper-lead-zinc-silver metallogenic *** this paper,

关键词： Th Pb Geochronology and geochemistry of the ore-bearing intrusion in the Longgen Lead-Zinc deposit in Tibet and its geological significance high

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Grain refinement and phase precipitation simultaneously improve the strength and ductility of ultra-high strength titanium alloy sheets

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Progress in Natural Science:Materials International 2024年第5期34卷 1066-1075页

作者： Xudong Kang Zhaoxin Du Shaojun Wang Jun Cheng Zhiyong Yue Tianhao Gong Jingshun Liu shuzhi zhang School of Materials Science and Engineering Inner Mongolia University of Technology Collaborative Innovation Center of Non-ferrous Metal Materials and Processing Technology Co-constructed by the Provience and Ministry Inner Mongolia Autonomous Region Inner Mongolia University of Technology Northwest Institute for Non-Ferrous Metal Research Shanxi Key Laboratory of Biomedical Metal Materials College of Mechanical Engineering Inner Mongolia University of Technology State Key Laboratory of Metastable Materials Science and Technology Yanshan University

The simultaneous high strength and high plasticity of metastable-β titanium alloy sheets remains a difficult challenge. In this work, a 1.2 mm thick sheet of Ti–15Mo–3Al-2.7Nb-0.25Si titanium alloy was obtained after rolling and annealing, and then subjected to a duplex-ageing treatment. The pre-ageing temperatures fell in the range of 300–390°C for 0.5–2h. The re-ageing temperatures were in the range of 500–600°C. After characterization, it was found that the alloy precipitates ω-phases during the pre-ageing process, and the distribution of such ω-phases evolves unevenly and increases in number with the increase of the pre-ageing ***, the strengthening mechanism of the alloy sheet is mainly α-phase nucleation assisted by ω-***, grain refinement appears as a mechanism to ensure the plasticity of the alloy. Finally the ω-phase evolution law is discussed in detail and the strengthening mechanism of the alloy sheet is also analyzed. At this work, a metastable-β titanium alloy sheet with strength of 1445.75 MPa and elongation of 6.55 % was *** study provides a new idea for the microstructure design and process improvement of the metastable-β titanium alloy sheet.

关键词： Metastable-β titanium Duplex-ageing treatment ω-phase Strengthening mechanism

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Refractive Index and Extinction Coefficient of Hg_(1-x)Cd_(x)Te at 77 and 300K

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Chinese Physics Letters 1994年第5期11卷 314-316页

作者： JIANG Runqing zhang shuzhi WU Feifei HU Xierong FANG Jiaxiong SHEN Jie XU Guosen Infrared and Remote Sensing Research Laboratory Shandong UniversityJi’nan 250100 Shanghai Institute of Technical Physics Academia SinicaShanghai 200083

We measured refractive index and extinction coefficient of n type Hg1-xCdxTe with the null ellipsometric spectrum method over the visible light region at 77 and 300K,and the dispersion relation at different temperature is *** value of refractive index at 77K is smaller than that at 300K,and the changes of the extinction coefficient curve at 77K is also smaller than that at 300K.

关键词： extinction refractive coefficient

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Effects of rolling deformation on microstructure and hardness of Ti-45Al-9Nb-0.3Y alloy

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Journal of Rare Earths 2016年第2期34卷 197-202页

作者：张树志张长江侯赵平孔凡涛陈玉勇 School of Materials Science and Engineering Taiyuan University of Technology Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of Technology

The microstructure evolution of as-rolled Ti-45Al-9Nb-0.3Y alloy as well as the nanohardness ofβ/B2 matrix was investigated by means of scanning electron microscopy (SEM) in backscattered electron mode (BSE) mode, transmission electron microscopy (TEM) and nanoindentation. This high Nb containing TiAl based alloy was rolled with 50%, 60%, 65% reduction, respectively. Omega phase precipitated in B2 phase with an orientation relationship of {110}β//{1120}ω and β//ω. Moreover, with the increase of de-formation reduction, rod-like structure which was formed inγ grain transformed from (α2+γ) lamellae structure intoα2 phase only. Addi-tionally, nanoinentation experiment revealed that the precipitation hardening ofω phase increased the hardness ofβ/B2 phase.

关键词： high Nb containing TiAl based alloy TNB alloy hot rolling omega phase phase transformation nanohardness rare earths

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锻态Ti-44Al-4Nb-4V-0.3Mo-Y合金等轴及片层组织高温拉伸性能及组织演变

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稀有金属材料与工程 2020年第7期49卷 2346-2351页

作者：曹小平张树玲张长江张树志太原理工大学山西太原030024 宁夏大学宁夏银川750021

等轴γ晶粒和α2/γ片层是beta-gamma TiAl合金的2种主要变形组织形态。研究了锻态Ti-44Al-4Nb-4V-0.3Mo-Y合金等轴组织及片层组织的高温拉伸性能及组织演变。结果表明:拉伸温度对Ti-44Al-4Nb-4V-0.3Mo-Y合金的力学性能和显微组织有显... 详细信息

等轴γ晶粒和α2/γ片层是beta-gamma TiAl合金的2种主要变形组织形态。研究了锻态Ti-44Al-4Nb-4V-0.3Mo-Y合金等轴组织及片层组织的高温拉伸性能及组织演变。结果表明:拉伸温度对Ti-44Al-4Nb-4V-0.3Mo-Y合金的力学性能和显微组织有显著的影响。在相同温度下,Ti-44Al-4Nb-4V-0.3Mo-Y合金等轴组织的抗拉强度和屈服强度略高于片层组织,而延伸率相差不大。随拉伸温度的升高,合金的抗拉强度和屈服强度逐渐减小,而延伸率迅速增大。对于等轴组织,提高温度,等轴γ晶粒被拉长,发生完全的动态再结晶,从而细化合金的显微组织。对于片层组织,α2/γ片层的分解和γ板条的再结晶程度随拉伸温度的升高而增大。Ti-44Al-4Nb-4V-0.3Mo-Y合金的韧脆转变温度在750~800℃之间。

关键词： TiAl合金微观组织演变高温拉伸机械性能

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我国通信电源装备发展水平述评

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电信科学 1998年第8期14卷 17-20页

作者：张树治邮电部通信电源设备质量监督检验中心

本文对我国通信电源装备，主要是高频开关电源、阀控式密封铅酸蓄电池以及集中监控系统等的发展水平作了综合评价，指出了与国外产品的差距和存在的问题，以敦促国产通信电源装备的改进和提高。

关键词：通信电源装备电路技术性能指标

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A Preliminary Study on the Preparation of Monoclonal Antibody with Umbilical Cord Blood Cell

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Journal of Biosciences and Medicines 2015年第3期3卷 73-77页

作者： Dongmei Su Shuren zhang shuzhi zhang Ying Gong Shaohui Zhu Liyan zhang Youjuan Wang Changqing Yue Xiaoping Liu Department of Microbiology Medical College Qingdao University Qingdao China Qingdao Zhongren Biology Technology Co. Ltd. Qingdao China

Objective: We conducted a preliminary study on the feasibility of preparing monoclonal antibody by umbilical cord blood cells systems. Methods: Collected umbilical cord blood cells and stimulated by Rubella virus, then incubated them and collected cell supernatant. By using Caprylic acid- saturated Ammonium sulfate method, monoclonal antibody was purified, and IgG subtype identification was conducted by their subtype classification kit of sigma. In traditional way, the preparation of monoclonal antibody cannot do without BABL/C mice and SP2/0 hybridoma cells. Consider this kinds of monoclonal antibody as a positive control, the reactivity and specificity of monoclonal antibodies were identified by Dot-ELISA. Results: By ELISA, we obtained four strains of positive umbilical cord blood cells. After subculture, cryopreservation and resuscitation in vitro, three of them were confirmed to secrete monoclonal antibody against rubella virus stably. The result of monoclonal antibody subtype classification showed that, both IgG1 and IgG2 types were detected. However, the quantity of monoclonal antibody prepared by umbilical cord blood cells was less than that from traditional method. Conclusions: The method of prepare monoclonal antibody using umbilical cord blood cells is feasible.

关键词： Umbilical Cord Blood Cells Monoclonal Antibody Rubella Virus

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基于自适应扩展卡尔曼滤波的分布式驱动电动汽车状态估计

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机械工程学报 2019年第6期55卷 156-165页

作者：张志勇张淑芝黄彩霞张刘铸李博浩工程车辆安全性设计与可靠性技术湖南省重点实验室长沙410114 长沙理工大学汽车与机械工程学院长沙410114 湖南大学机械与运载工程学院长沙410082

纵向车速和质心侧偏角是车辆主动安全控制系统的关键参考状态信号,通常采用卡尔曼滤波算法估计。当系统噪声和测量噪声的统计特性存在不确定性时,不仅估计精度会降低,甚至导致估计器发散。结合分布式驱动电动汽车4个车轮转矩和转速可直... 详细信息

纵向车速和质心侧偏角是车辆主动安全控制系统的关键参考状态信号,通常采用卡尔曼滤波算法估计。当系统噪声和测量噪声的统计特性存在不确定性时,不仅估计精度会降低,甚至导致估计器发散。结合分布式驱动电动汽车4个车轮转矩和转速可直接测量的特点,提出一种车辆状态自适应扩展卡尔曼滤波估计方法。基于量纲一化新息平方实现车辆状态估计有效性检测,提出滑动窗口长度自适应调整规则;根据新息统计特性提出卡尔曼滤波增益和状态估计误差协方差矩阵的自适应调整策略,及基于车辆状态估计稳态误差和动态响应速度的自适应参数确定原则。数值仿真和试验证明,所提出的车辆状态估计方法,不仅估计精度较高,而且实时性和易用性较强。

关键词：电动汽车状态估计扩展卡尔曼滤波分布式驱动自适应控制

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Ti-22Al-25Nb(at%)合金O相层片高温变形动态球化行为（英文）

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稀有金属材料与工程 2018年第2期47卷 416-422页

作者：林鹏唐婷婷池成忠张树志张长江太原理工大学材料科学与工程学院山西太原030024 太原理工大学先进镁基材料山西省重点实验室山西太原030024

为阐明Ti_2AlNb基合金高温变形过程中O相层片的球化机制及模型,研究了Ti-22Al-25Nb(at%)合金在(α_2+O+B2)相区压缩变形行为及显微组织演变规律。结果表明,合金的软化行为与O相层片动态球化、45°方向剪切变形失稳及裂纹萌生有关。O相... 详细信息

为阐明Ti_2AlNb基合金高温变形过程中O相层片的球化机制及模型,研究了Ti-22Al-25Nb(at%)合金在(α_2+O+B2)相区压缩变形行为及显微组织演变规律。结果表明,合金的软化行为与O相层片动态球化、45°方向剪切变形失稳及裂纹萌生有关。O相层片在较低温度和较高应变速率下难以球化是由于原子具有较低的扩散速率和较短的扩散时间。O相层片的球化机制主要为层片扭结和剪断,本质上属于动态再结晶行为。建立了合金高温变形本构关系,并计算了变形激活能为831 kJ·mol-1~1;对O相层片球化的动力学过程进行了研究,其动力学行为受变形条件影响很大,遵循阿夫拉米曲线方程。

关键词： Ti2AlNb合金动态球化动态再结晶热变形

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