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深厚软土且空间受限条件下桩板结构现浇梁支架方案设计

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价值工程 2025年第1期44卷 82-85页

作者：栗帅武中铁十七局集团(广州)建设有限公司广州510663

桩板结构具有结构简单、受力明确等优点,能够减少材料用量,降低工程造价,在跨越小面积的河流、道路或其他交通设施时,得到广泛使用。莲鹤大道项目与珠肇高铁并行段,设计采用桩板结构桥梁,共计3100m,地质条件复杂,淤泥质软土深厚,梁底距... 详细信息

桩板结构具有结构简单、受力明确等优点,能够减少材料用量,降低工程造价,在跨越小面积的河流、道路或其他交通设施时,得到广泛使用。莲鹤大道项目与珠肇高铁并行段,设计采用桩板结构桥梁,共计3100m,地质条件复杂,淤泥质软土深厚,梁底距离地面空间受限,现浇梁施工难度大。设计方建议采用贝雷梁+工字钢结构形式支架方案,由于部分梁底距离地面净空不足,该方案向下反开挖最多达3.0m,施工工效低,投入大。本文针对不同净空条件,研究了三种支架结构,满足共线段3.1km桩板结构现浇梁施工,提高了施工工效,降低了施工成本,为后续类似工程提供了参考。

关键词：桩板结构深厚软土空间受限支架现浇

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Kinematic Control of Serial Manipulators Under False Data Injection Attack

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 1009-1019页

作者： Yinyan Zhang shuai li College of Cyber Security Jinan UniversityGuangzhouChina College of Engineering Swansea UniversitySwanseaUnited Kingdom

With advanced communication technologies,cyberphysical systems such as networked industrial control systems can be monitored and controlled by a remote control center via communication *** lots of benefits can be achieved with such a configuration,it also brings the concern of cyber attacks to the industrial control systems,such as networked manipulators that are widely adopted in industrial *** such systems,a false data injection attack on a control-center-to-manipulator(CC-M)communication channel is undesirable,and has negative effects on the manufacture *** this paper,we propose a resilient remote kinematic control method for serial manipulators undergoing a false data injection attack by leveraging the kinematic *** analysis shows that the proposed method can guarantee asymptotic convergence of the regulation error to zero in the presence of a type of false data injection *** efficacy of the proposed method is validated via simulations.

关键词： Cyber-physical systems false data injection attack manipulators remote kinematic control

An Overview of Calibration Technology of Industrial Robots

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IEEE/CAA Journal of Automatica Sinica 2021年第1期8卷 23-36页

作者： Zhibin li shuai li Xin Luo the School of Computer Science and Technology Dongguan University of TechnologyDongguanGuangdong 523808 the School of Computer Science and Technology Chongqing University of Posts and TelecommunicationsChongqing 400065China the Department of Electronics and Electrical Engineering Swansea UniversitySwansea SA18EN the Hengrui(Chongqing)Artificial Intelligence Research Center Department of Big Data Analyses TechniquesCloudwalkChongqing 401331China the Department of Electronics and Electrical Engineering Swansea UniversitySwansea SA18ENUK

With the continuous improvement of automation,industrial robots have become an indispensable part of automated production *** widely used in a number of industrial production activities,such as spraying,welding,handling,etc.,and have a great role in these ***,the robotic technology is developing towards high precision,high *** calibration technology has a great significance to improve the accuracy of ***,it has much work to be done in the identification of robot *** parameter identification work of existing serial and parallel robots is *** the one hand,it summarizes the methods for parameter calibration and discusses their advantages and *** the other hand,the application of parameter identification is *** overview has a great reference value for robot manufacturers to choose proper identification method,points further research areas for ***,this paper analyzes the existing problems in robot calibration,which may be worth researching in the future.

关键词： Absolute pose accuracy identification method industrial robots parameter identification robot calibration technology robot parameters

Recursive recurrent neural network:A novel model for manipulator control with different levels of physical constraints

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CAAI Transactions on Intelligence Technology 2023年第3期8卷 622-634页

作者： Zhan li shuai li Department of Computer Science Swansea UniversitySwanseaUK College of Engineering Swansea UniversitySwanseaUK

Manipulators actuate joints to let end effectors to perform precise path tracking *** neural network which is described by dynamic models with parallel processing capability,is a powerful tool for kinematic control of *** to physical limitations and actuation saturation of manipulator joints,the involvement of joint constraints for kinematic control of manipulators is essential and ***,current existing manipulator control methods based on recurrent neural networks mainly handle with limited levels of joint angular constraints,and to the best of our knowledge,methods for kinematic control of manipulators with higher order joint constraints based on recurrent neural networks are not yet *** this study,for the first time,a novel recursive recurrent network model is proposed to solve the kinematic control issue for manipulators with different levels of physical constraints,and the proposed recursive recurrent neural network can be formulated as a new manifold system to ensure control solution within all of the joint constraints in different *** theoretical analysis shows the stability and the purposed recursive recurrent neural network and its convergence to *** results further demonstrate the effectiveness of the proposed method in end‐effector path tracking control under different levels of joint constraints based on the Kuka manipulator *** with other methods such as the pseudoinverse‐based method and conventional recurrent neural network method substantiate the superiority of the proposed method.

关键词： dynamic neural networks recursive computation robotic manipulator

Role of intraspecific competition in intrinsic growth rate regulation in an Oikopleura dioica(Tunicata)population

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Journal of Oceanology and limnology 2021年第2期39卷 609-622页

作者： shuai li Guangtao ZHANG Jiaozhou Bay National Marine Ecosystem Research Station Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China

Planktonic Oikopleura dioica respond almost instantly to opportunistic algal blooms,but it is unknown whether the population increase can change from an exponential to a logistic model to avoid a final sudden *** test the hypothesis that intraspecific competition regulates the intrinsic rate of natural increase(r),density-dependent effects on growth and reproduction performance were investigated in *** via laboratory *** a large food concentration range,batch maturation was observed above the per capita food supply(PFS)of 8.1µgC/*** 4.5 *** growth was saturated beyond this PFS value,whereas gonad length increased *** this threshold,individuals reached small body and gonad lengths,and maturation was rarely observed during the incubation *** gonad/body volume and maturation ratios also increased with the *** of the food concentration,the r values were regulated by competition pressure via variability in maturation duration and the proportion of mature individuals in the *** the minimum food demand was satisfied in the designated generation time,the r value tended to be regulated by the spawning proportion in the ***,prolonged development duration and decreased r values were expected.

关键词： Oikopleura dioica population size intraspecific competition growth fecundity r_(max)

Data Driven Vibration Control:A Review

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IEEE/CAA Journal of Automatica Sinica 2024年第9期11卷 1898-1917页

作者： Weiyi Yang shuai li Xin Luo Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714 Chongqing School University of Chinese Academy of SciencesChongqing 400714China Faculty of Information Technology and Electrical Engineering University of OuluOulu 90570 VTT-Technology Research Center of Finland Oulu 90570Finlan College of Computer and Information Science Southwest UniversityChongqing 400715China

With the ongoing advancements in sensor networks and data acquisition technologies across various systems like manufacturing,aviation,and healthcare,the data driven vibration control(DDVC)has attracted broad interests from both the industrial and academic *** shaping(IS),as a simple and effective feedforward method,is greatly demanded in DDVC *** convolves the desired input command with impulse sequence without requiring parametric dynamics and the closed-loop system structure,thereby suppressing the residual vibration *** on a thorough investigation into the state-of-the-art DDVC methods,this survey has made the following efforts:1)Introducing the IS theory and typical input shapers;2)Categorizing recent progress of DDVC methods;3)Summarizing commonly adopted metrics for DDVC;and 4)Discussing the engineering applications and future trends of *** doing so,this study provides a systematic and comprehensive overview of existing DDVC methods from designing to optimizing perspectives,aiming at promoting future research regarding this emerging and vital issue.

关键词： Data driven vibration control(DDVC) data science designing method feedforward control industrial robot input shaping optimizing method residual vibration

Fabrication of Cu^(+) sites in confined spaces for adsorptive desulfurization by series connection double-solvent strategy

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Green Energy & Environment 2022年第2期7卷 345-351页

作者： Shu Shi Yu-Xia li shuai-shuai li Xiao-Qin liu lin-Bing Sun State Key Laboratory of Materials-Oriented Chemical Engineering Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)College of Chemical EngineeringNanjing Tech University30 South Puzhu RoadNanjing 211816China

Cu^(+)-containing materials have shown various application prospects especially in adsorption and catalysis,because they are versatile,nontoxic and low *** date,developing a mild and controllable approach for the fabrication of Cu^(+) sites has remained a pronounced ***,we report a series connection double-solvent strategy(SCDS) for fabricating Cu^(+)sites within MIL-101(Cr),a typical metal–organic *** employing the SCDS in which vitamin C is chosen as the environmentally benign reducing agent,Cu^(2+) was incorporated in the pores and then transformed to Cu^(+) in the confined *** to the conventional high-temperature autoreduction method conducted under harsh environment(700°C for 12 h) with a low Cu^(+) yield(less than 50%),SCDS can selectively reduce Cu^(2+)to Cu^(+) at room temperature without generating any *** resulting Cu^(+)modified MIL-101(Cr) exhibits good desulfurization performance in view of both uptake and recyclability.

关键词： confined double generating

基于纳秒liBS的氢气/空气火焰混合分数测量研究

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光谱学与光谱分析 2025年第1期45卷 24-29页

作者：刘子晗刘艳韩磊单沅鲁政高强李帅瑶李博天津大学内燃机燃烧学国家重点实验室天津300072 中国科学院工程热物理研究所北京100190

在双碳政策和化石能源短缺的背景下,氢能作为高效环保的清洁能源,受到广大研究人员的关注。氢气/空气混合燃烧作为推动氢能规模化应用的重要途径,其燃烧机理和关键参数的测量技术成为目前研究的热点。燃空当量比是表征燃烧过程中燃料与... 详细信息

在双碳政策和化石能源短缺的背景下,氢能作为高效环保的清洁能源,受到广大研究人员的关注。氢气/空气混合燃烧作为推动氢能规模化应用的重要途径,其燃烧机理和关键参数的测量技术成为目前研究的热点。燃空当量比是表征燃烧过程中燃料与氧化剂混合程度的重要参数,直接影响燃烧的开始、自持以及燃烧化学反应的活跃程度。因此,对燃烧过程中的局部当量比实时在线监测,对于改善燃烧效率、控制燃烧过程具有重要意义。目前,可以实时测量氢气/空气火焰当量比的方法相对较少,激光光谱技术作为一种非侵入式的测量方法,不仅具有实时在线测量的能力,还具有快速、原位、远程分析、多元素同时在线监测等特点,在燃烧测量领域具有重要的应用潜力。采用纳秒激光诱导击穿光谱技术对氢气和空气燃烧场的燃空当量比进行测量研究。氢气和空气在管内混合后,由射流口喷出形成射流燃烧火焰场。激光通过透镜聚焦到射流燃烧场中击穿并产生等离子体,其等离子体的发射光谱由光谱仪采集,实验发现光谱中H 656 nm和O 777 nm具有很强的发射强度,且光谱强度随着当量比的变化,呈现规律性变化趋势。因此,采用H 656 nm和O 777 nm的光谱分别标示氢气和空气,并将其比值作为燃空当量比的测量参量。实验在氢气空气混合均匀的低速流场中测量了不同当量比下H 656 nm与O 777 nm的光谱强度比值,并与当量比建立标定曲线,实验发现该标定曲线对燃烧场和非燃烧场同样适用。基于标定曲线,我们研究了存在外界掺混情况下,射流燃烧场的局部燃空当量比情况。在当量比1.0,流场速度为20 m·s^(-1)的射流燃烧场中,测量了射流中心位置不同高度的燃空当量比变化情况,并在相同工况下进行了数值模拟。模拟结果与实验测量吻合较好,验证了纳秒激光诱导击穿光谱技术测量氢气/空气混合气的燃空当量比的可行性。该方法可为氢气燃烧基础研究及数值模拟提供技术支持。

关键词：激光诱导击穿光谱氢能当量比模拟

Controlled rocking pile foundation system with replaceable bar fuses for seismic resilience

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Earthquake Engineering and Engineering Vibration 2022年第3期21卷 683-696页

作者： Cheng Zhao li shuai Wang Jingquan Bridge Engineering Research Center of Southeast University School of Civil EngineeringSoutheast UniversityNanjing 210096China

Bridges designed following a conventional approach minimize the risk of collapse,but often require challenging,costly,and time-consuming restoration after an earthquake *** new seismic design philosophy requires bridges to maintain functionality even after severe *** this context,this paper proposes a controlled rocking pile foundation(CRPF)system and numerically evaluates bridges′degree of seismic *** CRPF system allows a pile cap to rock on a pile foundation and dissipate seismic energy through inelastic deformations of replaceable bar fuses that connect a pile cap and *** the conceptual design of the CRPF system,two analytical models were developed for a bridge pier utilizing the CRPF system and a pier designed to develop a plastic hinge in its *** analytical results indicate that,after experiencing a severe earthquake,a conventionally designed bridge pier sustained substantial damage in its column and exhibited significant residual *** contrast,a pier using the CRPF system showed negligible residual displacement and maintained elastic behavior except,as expected,for bar *** damaged fuses can be rapidly replaced to recover bridge seismic resistance following an ***,the CRPF system helps to achieve the desired postearthquake performance objectives.

关键词： seismic resilience bridges pier controlled rocking pile foundation repairable bar fuse