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Interpretable Data-Driven Learning With Fast Ultrasonic Detection for Battery Health Estimation

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 267-269页

作者： Kailong Liu Yuhang Liu qiao Peng Naxin Cui Chenghui Zhang the School of Control Science and Engineering Shandong University the Information Technology Analytics & Operations GroupQueen's University Belfast

Dear Editor,Health management is essential to ensure battery performance and safety, while data-driven learning system is a promising solution to enable efficient state of health(SoH) estimation of lithium-ion(Liion) batteries. However, the time-consuming signal data acquisition and the lack of interpretability of model still hinder its efficient deployment. Motivated by this, this letter proposes a novel and interpretable data-driven learning strategy through combining the benefits of explainable AI and non-destructive ultrasonic detection for battery SoH estimation. Specifically, after equipping battery with advanced ultrasonic sensor to promise fast real-time ultrasonic signal measurement, an interpretable data-driven learning strategy named generalized additive neural decision ensemble(ga.DE) is designed to rapidly estimate battery SoH and explain the effects of the involved ultrasonic features of interest.

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In-situ Dendrite/Metallic Glass Matrix Composites:A Review

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Journal of Materials Science & Technology 2013年第8期29卷 685-701页

作者： Junwei qiao Laboratory of Applied Physics and Mechanics of Advanced Materials College of Materials Science and EngineeringTaiyuan University of Technology

The advanced fabrication of in-situ dendrite/metallic glass matrix （MGM） composites is reviewed. Herein, the semi- solid processing and Bridgman solidification are two methods, which can make the dendrites homogeneously dispersed within the metallic glass matrix. Upon quasi-static compressive loading at room temperature, almost all the in-situ composites exhibit improved plasticity, due to the effective block to the fast propaga.ion of shear bands. Upon quasi-static tensile loading at room temperature, although the composites possess tensile ductility, the inhomogeneous deformation and associated softening dominates. High volume-fractioned dendrites and network structures make in-situ composites distinguishingly plastic upon dynamic compression. In-situ composite exhibits high tensile strength and softening （necking） in the supercooled liquid region, since the presence of high volume-fractioned dendrites lowers the rheology of the viscous glass matrix at high temperatures. At cryogenic temperatures, a distinguishingly-increased maximum strength is available; however, a ductile-to-brittle transition seems to be present by lowering the temperature. Besides, improved tension-tension fatigue limit of 473 MPa and four-point-bending fatigue limit of 567 MPa are ga.ned for Zr58.5Ti14.3Nb5.2Cu6.1Ni4.9Be11.0 MGM composites. High volume-fraction dendrites within the glass matrix induce increased effectiveness on the blunting and propaga.ing resistance of the fatigue-crack tip. The fracture toughness of in-situ composites is comparable to those of the toughest steels and crystalline Ti alloys. During steady-state crack-growth, the confinement of damage by in-situ dendrites results in enhancement of the toughness.

关键词： Bulk metallic glasses Composites Mechanical properties Dynamic loading Microstructures Shear bands

GOVERNMENT POLICIES AND CORPORATE FINANCING DECISIONS IN CHINA:THEORY AND EVIDENCE

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Journal of Systems Science and Systems Engineering 2013年第1期22卷 93-111页

作者： Kunyuan qiao Guanghua School of Management Peking University

This paper examines the effect of government policies on the financing decisions of firms in China. A real options model is developed to understand how fiscal and monetary policies affect corporate *** model predictions will be tested with a comprehensive panel data set spanning from 2002 to *** work documents robust evidence that show the positive association of both tax and risk-free rate with firm leverage：increase in tax rate and risk free rate by one standard deviation results in the increase in corporate leverages by 0.61 to 1.06 percent and 2.54 to 3.68 percent,*** addition,the productions of the firms are not affected by the tax rate in the short run,and the firms are operating in their optimal market *** implied tax rate and risk free rate are solved by assuming that the firms achieve their optimal *** implied tax rate declines with the size, whereas the opposite goes for implied risk-free rate.

关键词： Tax rate risk free rate market leverage book leverage

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多障碍环境下巡检机器人路径规划优化研究

现代电子技术 2025年第1期48卷 130-134页

作者：乔道迹张艳兵中北大学计算机科学与技术学院山西太原030051 中北大学电气与控制工程学院山西太原030051

针对大规模、密集的障碍物分布,高效地搜索最佳路径是一个挑战,为规划出更短的巡检路线,并实现多障碍环境下的灵活避障,文中提出一种多障碍环境下巡检机器人路径规划优化方法。使用二维矩阵构建巡检环境模型,应用D*算法在巡检环境模型... 详细信息

针对大规模、密集的障碍物分布,高效地搜索最佳路径是一个挑战,为规划出更短的巡检路线,并实现多障碍环境下的灵活避障,文中提出一种多障碍环境下巡检机器人路径规划优化方法。使用二维矩阵构建巡检环境模型,应用D*算法在巡检环境模型中进行巡检机器人路径规划,并将传统D*算法中的扩展步长方式改变为自适应扩展步长,使机器人在面积较大的巡检场地能够更快地完成巡检;将代价函数由欧氏距离替换为切比雪夫诺距离和曼哈顿距离融合的代价函数,并引入了平滑度函数优化线路规划结果,使规划的路径更为平滑,在遇到由于多种原因产生的新障碍物时可以重新规划路径。通过实验结果可知,无论是静态地图还是动态地图,该方法均可以快速准确地规划出一条最佳路线,并且在多种环境中应用该方法能够高效获取路径规划结果。

关键词：多障碍巡检机器人路径规划 D*算法动态环境扩展节点代价函数扩展步长

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增程式电动拖拉机动力电池供电系统研究

农机化研究 2025年第2期47卷 216-221页

作者：初香港王宝超乔明睿青岛农业大学机电工程学院山东青岛266109

增程式电动拖拉机具有节能减排、续航时间长等优点,但现有动力电池组电压等级较低,无法满足增程式电动拖拉机整机直流母线电压需求。为此,针对增程式电动拖拉机整机500 V电压平台需求,研究了其动力电池供电系统,完成了动力电池供电系统... 详细信息

增程式电动拖拉机具有节能减排、续航时间长等优点,但现有动力电池组电压等级较低,无法满足增程式电动拖拉机整机直流母线电压需求。为此,针对增程式电动拖拉机整机500 V电压平台需求,研究了其动力电池供电系统,完成了动力电池供电系统硬件设计和控制设计,最终利用MatLab/Simulink进行了仿真验证。仿真试验方面,所设计的动力电池供电系统实现了从320 V到500 V良好的升压稳压控制与闭环直流电源供电效果,能够适应与增程器等其他电源并联均流供电需求,动力电池供电系统具有良好的动态性能和稳态性能,满足稳定供电需求。

关键词：增程式电动拖拉机动力电池供电双闭环控制动态仿真

A hybrid Fast Multipole Method for cosmological N-body simulations

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Research in Astronomy and Astrophysics 2021年第1期21卷 25-32页

作者： qiao Wang Key Laboratory for Computational Astrophysics National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China

We investiga.e a hybrid numerical algorithm aimed at large-scale cosmological N-body simulation for on-going and future high precision sky *** makes use of a truncated Fast Multiple Method(FMM)for short-range gravity,incorporating a Particle Mesh(PM)method for long-range potential,which is applied to deal with extremely large particle *** this work,we present a specific strategy to modify a conventional FMM by a ga.ssian shaped factor and provide quantitative expressions for the interaction kernels between multipole ***,a proper Multipole Acceptance Criterion for the hybrid method is introduced to solve potential precision loss induced by the *** procedures reduce the amount of computation compared to an original FMM and decouple the global communication.A simplified version of code is introduced to verify the hybrid algorithm,accuracy and parallel implementation.

关键词： methods:numerical cosmology:theory large-scale structure of universe

Oil spill model development and application for emergency response system

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Journal of Environmental Sciences 2001年第2期13卷 252-256页

作者： B qiao Environmental Science Center Peking University Beijing 100871 China.

The paper introduces systematically the developing principle of CWCM 1.0 oil spill model based on Lagrange system and oil spill fate processes in environment, reviews two oil spill incidents of "East Ambassador" in Jiaozhou Bay and "Min Fuel 2" in the mouth of Pearl River, and designs the predictable system simulating oil spill applied in contingency plans. It is indicated that CWCM 1.0 has met preliminarily the demands for functions of precision simulating and predicting oil spill, and can plan an important role to support oil spill response.

关键词： Oil spill model development and application for emergency response system

Fluctuation of Quantum Information Density in Curved Time-Space

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Chinese Physics Letters 2007年第4期24卷 859-862页

作者： BI qiao Department of Physics Wuhan University of Technology Wuhan 430070 Center of Advanced Nanotechnology University of Toronto M5S 3E4 Canada

A dynamical equation for quantum information density （QID） in curved spacetime is presented. The related fluctuation of QID with quantum Einstein equation is also discussed, which reveals the measuring of the dynami... 详细信息

关键词： Cosmology

A visible-light-assisted Pd/TiO_(2)ga. sensor with carbon nanotubes electrodes for trace formaldehyde detection

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Rare Metals 2024年第1期43卷 257-266页

作者： Can Liu qiao-qiao Zou Bin Liu Yong Zhang School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China Hunan Institute of Advanced Sensing and Information Technology Xiangtan UniversityXiangtan 411105China School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China

Owing to the ppb-level detection standard toward the toxic and harmful ga.,the detection of trace ga.es has become an important subject in the field of indoor environment ***,the traditional resistive ga. sensors hardly meet the requirement due to the weak signal generated by trace ga. molecules that are difficult to ***,a visible-light-assisted Pd/TiO_(2)ga. sensor is proposed to endow the effective detection of trace formaldehyde(HCHO)ga. without heating *** from the enhanced photocatalytic properties of TiO_(2)by Pd decoration,the visible-light-assisted Pd/TiO_(2)ga. sensor can detect the HCHO ga. as low as80×10^(–9)at room *** successful preparation of nanoscale TiO_(2)sensing layer is facilitated by the ultrathin carbon nanotube interdigital electrode in the ga. sensor,which avoids the discontinuity of the sensing layer caused by the excessive thickness of the traditional metal *** addition,the whole preparation process of the Pd/TiO_(2)ga. sensor with carbon nanotube electrodes is compatible with mainstream CMOS fabrication technology,which is expected to realize the batch fabrication and micro-integrated application of ga. *** is expected that our work can provide a new strategy for the batch preparation of high-performance trace HCHO ga. sensors and their future applications in portable electronic devices such as smartphones.

关键词： Visible-light-assisted ga. sensor Pd/TiO_(2) Trace HCHO detection Carbon nanotubes electrodes