检索结果-南通市图书馆

Molecule‑Level Multiscale Design of Nonflammable Gel Polymer Electrolyte to Build Stable SEI/CEI for Lithium Metal Battery

引用

Nano-Micro Letters 2025年第1期17卷 404-423页

作者： Qiqi Sun Zelong Gong tao zhang Jiafeng Li Xianli Zhu Ruixiao Zhu Lingxu Wang Leyuan Ma Xuehui Li Miaofa Yuan Zhiwei zhang Luyuan zhang Zhao Qian Longwei Yin Rajeev Ahuja Chengxiang Wang Key Laboratory for Liquid‑Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061People’s Republic of China Condensed Matter Theory Department of Physics and AstronomyUppsala UniversityUppsala 75120Sweden

The risk of flammability is an unavoidable issue for gel polymer electrolytes(GPEs).Usually,flameretardant solvents are necessary to be used,but most of them would react with anode/cathode easily and cause serious interfacial instability,which is a big challenge for design and application of nonflammable ***,a nonflammable GPE(SGPE)is developed by in situ polymerizing trifluoroethyl methacrylate(TFMA)monomers with flame-retardant triethyl phosphate(TEP)solvents and LiTFSI–LiDFOB dual lithium *** is strongly anchored to PTFMA matrix via polarity interaction between-P=O and-CH_(2)CF_(3).It reduces free TEP molecules,which obviously mitigates interfacial reactions,and enhances flame-retardant performance of TEP *** TEP molecules are also inhibited in solvation of Li^(+),leading to anion-dominated solvation sheath,which creates inorganic-rich solid electrolyte interface/cathode electrolyte interface *** coordination structure changes Li^(+)transport from sluggish vehicular to fast structural transport,raising ionic conductivity to 1.03 mS cm^(-1) and transfer number to 0.41 at 30℃.The Li|SGPE|Li cell presents highly reversible Li stripping/plating performance for over 1000 h at 0.1 mA cm^(−2),and 4.2 V LiCoO_(2)|SGPE|Li battery delivers high average specific capacity>120 mAh g^(−1) over 200 *** study paves a new way to make nonflammable GPE that is compatible with Li metal anode.

关键词： Anchoring effect Nonflammable gel electrolyte In situ cross-linked Electrode-electrolyte interface Li metal battery

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Deep Reinforcement Learning Based Mobile Robot Navigation:A Review

引用

Tsinghua Science and Technology 2021年第5期26卷 674-691页

作者： Kai Zhu tao zhang the Department of Automation Tsinghua UniversityBeijing 100084China the Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

Navigation is a fundamental problem of mobile robots,for which Deep Reinforcement Learning(DRL)has received significant attention because of its strong representation and experience learning *** is a growing trend of applying DRL to mobile robot *** this paper,we review DRL methods and DRL-based navigation *** we systematically compare and analyze the relationship and differences between four typical application scenarios:local obstacle avoidance,indoor navigation,multi-robot navigation,and social ***,we describe the development of DRL-based ***,we discuss the challenges and some possible solutions regarding DRL-based navigation.

关键词： mobile robot navigation obstacle avoidance deep reinforcement learning

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

DEM Analysis of Single-Particle Crushing Considering the Inhomogeneity of Material Properties

引用

Acta Mechanica Solida Sinica 2022年第1期35卷 26-39页

作者： tao zhang Wenxiong Huang College of Mechanics and Materials Hohai UniversityNanjing 211100China

Crushing characteristics of single particles are the basis of granular material simulation with discrete element method(DEM).To improve the universality and precision of crushable DEM model,inhomogeneous stiffness and strength properties are introduced into the bonded particle method,with which the Weibull distribution and size effect of particle strength can be reproduced without deleting elementary *** issues of particle strength and carrying capacity under complex contact conditions are investigated in this work by symmetric loading tests,asymmetric loading tests,and ball-ball loading *** of numerical experiments indicate that particle carrying capacity is significantly influenced by coordination numbers,the symmetry of contact points,as well as the relative size of its *** conditions also show impact on single-particle crushing categories and the origin position of inner particle *** existing stress indexes and assumptions of particle crushing criterion are proved to be inappropriate for general loading *** the inherent inhomogeneity and contact conditions of particles should be taken into consideration in the simulation of granular materials.

关键词： Bonded particle method Inhomogeneous properties Size effect Coordination number Symmetry Relative size

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asymptotic Properties in Semiparametric Partially Linear Regression Models for Functional Data

引用

Acta Mathematicae Applicatae Sinica 2013年第3期29卷 631-644页

作者： tao zhang College of Science Guangxi University of Technology School of Mathematics and Statistics Yunnan University

We consider the semiparametric partially linear regression models with mean function XTβ ＋ g（z）, where X and z are functional data. The new estimators of β and g（z） are presented and some asymptotic results are given. The strong convergence rates of the proposed estimators are obtained. In our estimation, the observation number of each subject will be completely flexible. Some simulation study is conducted to investigate the finite sample performance of the proposed estimators.

关键词： longitudinal data functional data semiparametric partially linear regression models asymptotic properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Adaptive Prescribed Performance Control for Flexible Spacecraft with Input Saturation and Actuator Misalignment

引用

Tsinghua Science and Technology 2019年第6期24卷 694-705页

作者： Jiawei tao tao zhang Yongfang Nie Department of Automation Tsinghua UniversityBeijing 100084China Department of Strategic Missile and Underwater Weapon Naval Submarine AcademyQingdao 266071China

In this paper, a flexible spacecraft attitude control scheme that guarantees vibration suppression and prescribed performance on transient-state behavior is proposed. Here, parametric uncertainty, external disturbance, unmeasured elastic vibration, actuator saturation, and even configuration misalignment are considered. To guarantee prescribed performance bounds on the transient-and steady-state control errors, a performance constrained control law is formulated with an error transformed function. An elastic modal observer is employed to estimate the unmeasured flexible modal variables, and a command filter is adopted to avoid the tedious analytical computations of time derivatives of virtual control inherent in the control design. Subsequently, a novel auxiliary system is developed to compensate the adverse effects of the actuator saturation constraints, and a compensation term is integrated into the control law to tackle the configuration misalignment. A comparative simulation study is carried out to illustrate the effectiveness and advantages of the proposed approach.

关键词： flexible spacecraft modal observer vibration suppression prescribed performance input saturation actuator misalignment

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Robust Adaptive Attitude Maneuvering and Vibration Reducing Control of Flexible Spacecraft Under Input Saturation

引用

Transactions of Nanjing University of Aeronautics and Astronautics 2019年第2期36卷 98-108页

作者： tao Jiawei zhang tao Department of Automation Tsinghua University

A robust adaptive control scheme is proposed for attitude maneuver and vibration suppression of flexible spacecraft in situations where parametric uncertainties,external disturbances,unmeasured elastic vibration and input saturation constraints exist. The controller does not need the knowledge of modal variables but the estimates of modal variables provided by appropriate dynamics of the controller. The requirements to know the system parameters and the bound of the external disturbance in advance are also eliminated by adaptive updating technique. Moreover,an auxiliary design system is constructed to analyze and compensate the effect of input saturation,and the state of the auxiliary design system is applied to the procedure of control design and stability analysis. Within the framework of the Lyapunov theory,stabilization and disturbance rejection of the overall system are ensured. Finally,simulations are conducted to study the effectiveness of the proposed control scheme,and simulation results demonstrate that the precise attitude control and vibration suppression are successfully achieved.

关键词： flexible spacecraft attitude maneuver modal observer vibration suppression input constraints

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Relative Position and Attitude Control for Drag-Free Satellite with Prescribed Performance and Actuator Saturation

引用

Transactions of Nanjing University of Aeronautics and Astronautics 2019年第4期36卷 617-627页

作者： tao Jiawei zhang tao Department of Automation Tsinghua UniversityBeijing 100084P.R.China

An adaptive prescribed performance control scheme is proposed for the drag free satellite in the presence of actuator saturation and external *** relative translation and rotation dynamics between the test mass and outer satellite are firstly *** guarantee prescribed performance bounds on the transient and steady control errors of relative states,a performance constrained control law is formulated with an error transformed *** addition,the requirements to know the system parameters and the upper bound of the external disturbance in advance have been eliminated by adaptive updating technique.A command filter is concurrently used to overcome the problem of explosion of complexity inherent in the backstepping control ***,a novel auxiliary system is constructed to compensate the adverse effects of the actuator saturation *** is proved that all signals in the closed?loop system are ultimately bounded and prescribed performance of relative position and attitude control errors are ***,numerical simulation results are given to demonstrate the effectiveness of the proposed approach.

关键词： relative position and attitude control drag‑free satellite command filter prescribed performance actuator saturation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Deep Guided Attention Network for Joint Denoising and Demosaicing in Real Image

引用

Chinese Journal of Electronics 2024年第1期33卷 303-312页

作者： tao zhang Ying FU Jun zhang School of Computer Science and Technology Beijing Institute of Technology Advanced Reasearch Institute of Multidisciplinary Science Beijing Institute of Technology

Denoising(DN) and demosaicing(DM) are the first crucial stages in the image signal processing pipeline. Recently, researches pay more attention to solve DN and DM in a joint manner, which is an extremely undetermined inverse problem. Existing deep learning methods learn the desired prior on synthetic dataset, which limits the generalization of learned network to the real world data. Moreover, existing methods mainly focus on the raw data property of high green information sampling rate for DM, but occasionally exploit the high intensity and signalto-noise(SNR) of green channel. In this work, a deep guided attention network(DGAN) is presented for real image joint DN and DM(JDD), which considers both high SNR and high sampling rate of green information for DN and DM, respectively. To ease the training and fully exploit the data property of green channel, we first train DN and DM sub-networks sequentially and then learn them jointly, which can alleviate the error accumulation. Besides, in order to support the real image JDD, we collect paired raw clean RGB and noisy mosaic images to conduct a realistic dataset. The experimental results on real JDD dataset show the presented approach performs better than the state-of-the-art methods, in terms of both quantitative metrics and qualitative visualization.

关键词： Training Visualization Inverse problems Green products Noise reduction Pipelines Signal processing

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

基于超线性时序逻辑的无二义加权自动机的可检测性研究

引用

天津理工大学学报 2025年第1期41卷 112-117页

作者：张涛彭皓天天津理工大学网络安全和信息化办公室天津工业大学控制科学与工程学院

文中从超线性时序逻辑(hyper linear temporal logic, HyperLTL)的角度深入探讨了加权离散事件系统(discrete event systems, DESs)的可检测性问题。先前关于DESs的研究通常假设事件转换是瞬时的或无需成本的。然而，在实际生产环境中... 详细信息

文中从超线性时序逻辑(hyper linear temporal logic, HyperLTL)的角度深入探讨了加权离散事件系统(discrete event systems, DESs)的可检测性问题。先前关于DESs的研究通常假设事件转换是瞬时的或无需成本的。然而，在实际生产环境中，事件转换往往涉及时间和成本的消耗，这需要在DESs研究中引入加权因素。加权决策策略旨在通过为不同事件或状态分配权重来优化系统性能、指导政策制定，并实现高效、安全和可靠地运行。讨论了从加权DESs建模中得出的无二义加权自动机(unambiguous weighted automata, UWAs)。在此基础上，将其转换为一种特殊的Kripke结构，以捕获此类加权自动机的信息，从而实现HyperLTL的明确表示。

关键词：网络安全离散事件系统可检测性超线性时序逻辑无二义加权自动机

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Numerical simulation research on surface radiation heat calculation of spacecraft in orbit whole course

引用

航空动力学报 2010年第10期25卷 2229-2237页

作者： SUN Bing zhang tao School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100191 China

The surface radiation heat simulation program based on Microsoft VC++ 6.0 for spacecraft in whole orbit course was *** to complexity of spacecraft structure,the spacecraft structures were decomposed to relatively regular *** generation of calculation grid was conducted by using structured grid and unstructured *** mainly solved automatic grid generation for arbitrary surface and data transmission between arbitrary shape interfaces,and the geometry structure,physical process,calculation accuracy and efficiency were *** factors and radiation transfer coefficients were calculated by combining finite element method and ray uniform *** to the position of surface cells,external heat flux was calculated with integral method for non-shaded surface and with ray uniform distribution method for shaded *** the spacecraft surface was wrapped with multilayer insulation material,the temperature field of multilayer insulation material was calculated with nodal network method and finite volume *** temperature of other parts without wrap was calculated with finite element *** temperature of unconnected regions available with radiation heat transfer relations was analyzed,and the calculation formulae were *** experiment shows that the simulation program is correct and effective.

关键词： spacecraft radiation heat calculation whole course numerical simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：