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Distributed Model Predictive Control for Nonlinear Networked Systems with Asynchronous Communication 36

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Distributed Model Predictive Control for Nonlinear Networked...

Characteristics and formation analysis of earth fissure in Anren area in Wei River Basin， China

第36届中国控制会议

作者： zhou yuanqiang LI Dewei XI Yugeng CEN Lihui XU Yuli GAN Zhongxue Department of Automation Shanghai Jiao Tong UniversityKey Laboratory of System Control and Information ProcessingMinistry of Education School of Information Science and Engineering Central South University ENN Science & Technology Development Co. Ltd.

ISBN: (纸本)9781538629185

This paper concerns the distributed model predictive control（DMPC） problem for nonlinear multirate networked systems subject to asynchronous *** asynchronization of communication between each subsystem always exists in mechanic engineering and chemical *** motivation of this paper is to use the asynchronous information to improve closed-loop performance for a class of networked systems with coupled nonlinear *** handle the asynchronous communication,a methodology of state trajectory estimation for the coupled neighboring agents over each prediction horizon with guaranteed error bounds is *** make effective use of computational resources,a distributed model predictive control algorithm with the dual-model control strategy is *** conditions for ensuring the subsequent feasibility of the proposed algorithm and the stabilization of the closed-loop networked systems are developed ***,the theoretical results are verified by a simulation example for a set of coupled Van der Pol oscillators.

关键词： Networked systems Nonlinear system Nonlinear predictive control Distributed nonlinear control

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Journal of Earth Science 2022年

作者： Jianwei Qiao Zhenjiang Meng Yuyun Xia Cong Liu Quanzhong Lu Feiyong Wang yuanqiang zhou Haiyuan Zhao China Jikan Research Institute of Engineering Investigations and Design Co.， Ltd. Shaanxi Key Laboratory for the Property and Treatment of Special Soil and Rock School of Geological Engineering and Geomatics， Chang'an University Key Laboratory of Western China Mineral Resources and Geological Engineering School of Engineering and Technology， China University of Geosciences (Beijing)

Since the 1950’s， 212 earth fissures have been discovered in the Wei River Basin. During a field survey in 2016， an additional 48 earth fissures were discovered in Anren area， northeast of the Wei River Basin. The characteristics and formation mechanisms of these fissures were studied through field investigations， measurements， trench excavation， and drilling. On-site investigations indicated that these earth fissures were distributed along a fault-controlled geomorphic boundary. Fissures trended at 60°–80° NE and were divided into five groups. Trenches revealed multiple secondary fissures， exposing severe soil ruptures in the shallow earth surfaces. Drilling profiles revealed that earth fissures dislocated several strata， and resembled synsedimentary faults. Seismic reflection profiles revealed buried faults beneath the earth fissures. The Anren area fissures formed in the following three stages: regional extension that initially generated multiple buried faults; seismic activity rupturing multiple strata， resulting in multiple buried fractures; and finally， erosion processes that propagated the buried fractures to the surface， forming the current earth fissures.

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Quality Prediction of Injection Molding Process Using CNN and Parallel-Cascade LSTMs

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Quality Prediction of Injection Molding Process Using CNN an...

第43届中国控制会议

作者： Yibo Zhang Dewei Li yuanqiang zhou Furong Gao Key Laboratory of System Control and Information Processing Shanghai Jiao Tong University College of Electronic and Information Engineering Tongji University Department of Chemical and Biological Engineering Hong Kong University of Science and Technology Clear Water Bay KowloonHong Kong and the Guangzhou HKUST Fok Ying Tung Research Institute

Quality prediction of plastic products has always been an important research topic in the injection molding production process. However, existing quality prediction methods struggle to handle both high-frequency data and statistical data generated during the injection molding production process. This paper introduces a novel quality prediction model for injection molding production, utilizing a combination of Convolutional Neural Networks(CNN) and Parallel-Cascade Long Short-Term Memory(PCLSTM) networks. The PCLSTM network is designed to handle the complexities of high-frequency data in injection molding,overcoming the limitations of traditional LSTM methods in processing long sequence data. By segmenting data into stages and utilizing a cascade mechanism, the PCLSTM architecture efficiently captures important temporal dynamics. Additionally, the CNN network is designed to extract statistical data features. The quality prediction results are obtained by fusing two types of data features and then passing them through a fully connected network. Experimental results on real production datasets show that the CNN-PCLSTM model outperforms existing models in prediction accuracy and training convergence speed.

关键词： LSTM CNN Quality Prediction Injection Molding Process

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某在役明城墙病害调研及评估方法

自然灾害学报 2019年第2期28卷 60-73页

作者：朱才辉周远强西安理工大学岩土工程研究所

评估在役古城墙的病害等级对其制定修复方案具有重要意义。以西部某明城墙为研究对象,对其存在的风化、裂缝、不均匀变形、受水分入渗、整体损伤程度等病害特征及诱因进行了大量调研分析和无损探测研究,基于古城墙砌体和夯土材料的损伤... 详细信息

评估在役古城墙的病害等级对其制定修复方案具有重要意义。以西部某明城墙为研究对象,对其存在的风化、裂缝、不均匀变形、受水分入渗、整体损伤程度等病害特征及诱因进行了大量调研分析和无损探测研究,基于古城墙砌体和夯土材料的损伤力学机理和专家建议,提出了描述上述病害程度等级指标的确定方法。建议将该明城墙病害分为A级(微弱)、B级(轻度)、C级(中度)和D级(重度)4个等级,并采用数值方法、模糊数学理论和层次分析法,建立了古城墙病害等级模糊评价系统及可视化评价平台。研究结果表明:(1)基于无损探测技术来获取明城墙病害数据库,结合古建筑材料的损伤理论,可系统量化在役明城墙的病害等级;(2)评估系统能够很好的应用于古城墙的病害诊断中,该明城墙南墙的病害程度最严重,西、北墙次之,东墙保存较完好,其病害客观评估结果与现场调研结果基本吻合,可在同历史时期建造的古建筑砖-土结构的病害评估中推广应用。

关键词：明城墙病害评估损伤模型模糊数学数值方法

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古建筑砖-土结构力学性能及裂缝成因分析

建筑结构学报 2019年第9期40卷 175-186页

作者：朱才辉刘钦佩周远强西安理工大学岩土工程研究所

古建筑中砖-土结构材料的劣化与古建筑裂缝扩展关系密切。以现役西安明代城墙及钟楼等古建筑为研究对象,对其墙体开裂特征及开裂原因开展了现场调研,并采用室内试验、回弹试验、面波测试和环境激励法对比分析了砖墙砌体及夯土材料的等... 详细信息

古建筑中砖-土结构材料的劣化与古建筑裂缝扩展关系密切。以现役西安明代城墙及钟楼等古建筑为研究对象,对其墙体开裂特征及开裂原因开展了现场调研,并采用室内试验、回弹试验、面波测试和环境激励法对比分析了砖墙砌体及夯土材料的等效力学参数及其合理的取值范围。提出了考虑损伤的砌体力学模型,通过室内试验获取了夯土软化期间力学参数与饱和度的关系,采用数值分析方法对比分析了砖-土结构材料在劣化或软化期间古建筑基座的受力和变形特征。研究结果表明:夯土软化会诱发古建筑基座裂缝由上向下扩展,砌体劣化会导致裂缝由下向上扩展,且夯土软化效应对古建筑的稳定性影响更大;为了加强古建筑基座的稳定性,应采取有效的防、排水措施防止水分入渗,控制基座内夯土的饱和度低于75%,对外墙砌体结构开裂位置采取相应的加固措施,控制现役状态下的砌体损伤因子低于0.6。

关键词：古建筑砖-土结构有限元分析裂缝成因分析力学性能

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太阳辐射对混凝土箱梁温度效应的影响

同济大学学报（自然科学版） 2008年第11期36卷 1479-1484页

作者：张建荣周元强林建萍张志燕同济大学职业技术教育学院上海200092 同济大学土木工程学院上海200092 同济大学建筑设计研究院上海200092 焦作建筑经济学校河南焦作454001

介绍了影响混凝土结构温度效应的太阳辐射强度和太阳辐射吸收系数的一般特性.利用有限元程序进行混凝土简支箱梁的温度效应计算,分析了太阳辐射吸收系数对梁的跨中挠度变化幅度、轴向变形变化幅度以及梁内最大拉应变的影响,并给出了相... 详细信息

介绍了影响混凝土结构温度效应的太阳辐射强度和太阳辐射吸收系数的一般特性.利用有限元程序进行混凝土简支箱梁的温度效应计算,分析了太阳辐射吸收系数对梁的跨中挠度变化幅度、轴向变形变化幅度以及梁内最大拉应变的影响,并给出了相应的等效温差.根据混凝土表面性状的不同,太阳辐射吸收系数在0.4~0.8之间变化.计算结果表明,太阳辐射吸收系数的变化对混凝土箱梁结构的温度变形影响明显.在工程中建议采取在混凝土表面刷浅色涂层、采用整体式定型钢模板等措施减小温度效应.

关键词：混凝土结构箱梁温度效应太阳辐射

“世界一流大学建设”跨越发展战略的经济学概念分析

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江苏高教 2005年第4期 44-46页

作者：周远强吕磊张良平清华大学国际合作与交流处清华大学科研院

我国世界一流大学建设需要大量资源的投入也被期待巨大贡献的产出,这不仅是重要的教育课题,同时也是个重大经济课题。本文应用经济学概念,对我国世界一流大学建设现阶段跨越发展战略及其重点突破的实施要点进行了分析。文章指出,现阶段... 详细信息

我国世界一流大学建设需要大量资源的投入也被期待巨大贡献的产出,这不仅是重要的教育课题,同时也是个重大经济课题。本文应用经济学概念,对我国世界一流大学建设现阶段跨越发展战略及其重点突破的实施要点进行了分析。文章指出,现阶段跨越发展战略的实现应该具体体现为某些创新科学技术的突破,尤其是某些基础性的原始创新。

关键词：世界一流大学经济学跨越发展

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盾构施工绕穿钟楼方案的优化研究

西安理工大学学报 2017年第1期33卷 60-65页

作者：周远强朱才辉李宁西安理工大学岩土工程研究所陕西西安710048

西安地铁二号线的修建会不可避免地穿越国家级重点保护文物——西安钟楼。本文以该工程为背景,采取有限元数值分析方法,建立三维有限元模型,模拟了七种不同盾构绕穿钟楼的施工方案。在有加固桩和无加固桩两种工况下,得到了钟楼台基及其... 详细信息

西安地铁二号线的修建会不可避免地穿越国家级重点保护文物——西安钟楼。本文以该工程为背景,采取有限元数值分析方法,建立三维有限元模型,模拟了七种不同盾构绕穿钟楼的施工方案。在有加固桩和无加固桩两种工况下,得到了钟楼台基及其周围地表土的沉降规律和钟楼台基应力变化规律。对比分析了钟楼加固前后不同施工方案对钟楼的影响程度,优化了设计施工方案。

关键词：地铁隧道盾构法钟楼有限元方案优化

Green innovation unleashed: Harnessing tungsten-based nanomaterials for catalyzing solar-driven carbon dioxide conversion

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Chinese Chemical Letters 2025年第2期36卷 136-145页

作者： Weidan Meng Yanbo zhou Yi zhou State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process East China University of Science and Technology National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery East China University of Science and Technology Shanghai Institute of Pollution Control and Ecological Security Shanghai Engineering Research Center for Multi-media Environmental Catalysis and Resource Utilization East China University of Science and Technology

Carbon dioxide photocatalytic reduction (CO2-PR) is an efficient method for controlling CO2emissions and generating cleaner energy while mitigating global warming. Tungsten oxides (WxOy) have attracted considerable attention for CO2-PR due to their excellent spectral absorbance. However, comprehensive reviews are lacking on the use of WxOyfor CO2-PR. Therefore, this review provides a detailed summary of t research progress made with WxOy-based catalysts in CO2-PR. It also explains the fundamental principles of CO2-PR and evaluates key performance indicators that affect the activity of WxOy-based photocatalysts,including yield, selectivity, stability, and apparent quantum yield. Additionally, this review explores opportunities for synthesizing high-performance WxOy-based photocatalysts and highlights their potential for the green preparation of C1/C2 products through CO2-PR. These innovative strategies aim to address the challenges and pressures associated with energy and environmental issues, particularly by enhancing artificial photosynthesis efficiency.

关键词： Carbon dioxide photoreduction Mechanism Performance evaluation Selectivity Tungsten-based nanocatalyst