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Fuzzy Filter Design for Affine Systems with Sensor Faults:A Dynamic Event-Triggered Approach

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Journal of Systems Science & Complexity 2022年第5期35卷 1761-1784页

作者： CHENG Jun wu Yuyan wu zhengguang LI Kezan School of Mathematics and Statistics Center for Applied Mathematics of GuangxiGuangxi Normal Univer-sityGuilin 541006China School of Mathematics and Statistics Guangxi Normal UniversityGuilin 541006China School of Information Science and Engineering Chengdu UniversityChengdu 610106China Institute of Cyber-Systems and Control Zhejiang UniversityHangzhou 310027China School of Mathematics and Computing Science Guilin University of Electronic TechnologyGuilin 541004China

This study addresses the issue of dynamic event-triggered-based filtering for fuzzy affine *** alleviate the utilization of constraint bandwidth resources and improve the efficiency of the signals exchange,a dynamic event-triggered protocol is forwarded to regulate the trigger instants with objective system ***,the nonhomogeneous Markov process is proposed to characterize the dynamic behaviors of sensor faults,where the time-varying transition probabilities belong to a convex polytope ***,the validity and applicability of devised filter design methodology for fuzzy affine systems are displayed via two practical models.

关键词： Dynamic event-triggered protocol fuzzy affine systems nonhomogeneous Markov process sensor fault

Delay-dependent robust stabilization for uncertain singular systems with discrete and distributed delays

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控制理论与应用（英文版） 2008年第2期6卷 171-176页

作者： zhengguang wu wuneng ZHOU National Lab of Industrial Control Technology Institute of Advanced Process Control Zhejiang University Hangzhou Zhejiang 310027 China College of Information Science and Technology Donghua University Shanghai 200051 China

This paper investigates the problem of delay-dependent robust stabilization for uncertain singular systems with discrete and distributed delays in terms of linear matrix inequality （LMI） approach. Based on a delay-dependent stability condition for the nominal system, a state feedback controller is designed, which guarantees the resultant closed- loop system to be robustly stable. An explicit expression for the desired controller is also given by solving a set of matrix inequalities. Some numerical examples are provided to illustrate the less conservativeness of the proposed methods.

关键词： Singular systems Time-delay systems Delay-dependent Robust stabilization Linear matrix inequality(LMI)

Delay-dependent stabilization of singular Markovian jump systems with state delay

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控制理论与应用（英文版） 2009年第3期7卷 231-236页

作者： zhengguang wu Hongye SU Jian CHU National Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou Zhejiang 310027 China

This paper deals with the delay-dependent stabilization problem for singular systems with Markovian jump parameters and time delays. A delay-dependent condition is established for the considered system to be regular, impulse free and stochastically stable. Based on the condition, a design algorithm of the desired state feedback controller which guarantees the resultant closed-loop system to be regular, impulse free and stochastically stable is proposed in terms of a set of strict linear matrix inequalities （LMIs）. Numerical examples show the effectiveness of the proposed methods.

关键词： Singular time-delay systems Markovian jumping parameters Delay-dependent Stochastic stability Linear matrix inequality (LMI)

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光伏板下喷雾降温的热环境模拟

水电与新能源 2024年第2期38卷 25-28页

作者：吴光星易春龙吴争光中工武大设计集团有限公司湖北武汉430070

光伏发电带动了光伏农业的发展。然而,夏季光伏板下局部温度可达60℃,影响下面农作物等的生长,限制了系统性能的发挥。因此,本研究利用流体力学软件Fluent构建光伏阵列模型,开展光伏板下喷雾降温的热环境模拟,研究了喷雾降温技术在光伏... 详细信息

光伏发电带动了光伏农业的发展。然而,夏季光伏板下局部温度可达60℃,影响下面农作物等的生长,限制了系统性能的发挥。因此,本研究利用流体力学软件Fluent构建光伏阵列模型,开展光伏板下喷雾降温的热环境模拟,研究了喷雾降温技术在光伏农业中的应用。由模型的分析和计算,可得到初步的光伏板下的温度变化情况,为光伏板下喷雾降温的研究和应用提供了基础支持。

关键词：光伏农业高温喷雾降温 Fluent软件

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再生粗骨料沥青混合料的动态黏弹性特性研究

实验技术与管理 2024年第7期41卷 37-45页

作者：张垚贾思林吴正光寇长江郭翔宇扬州大学建筑科学与工程学院江苏扬州225100

再生骨料是一种将建筑垃圾中的混凝土块等废料加工而成的再生产品,它可以替代部分天然骨料加入沥青混合料中铺筑路面,有助于减少对天然石材的开采,降低沥青路面的成本。为了研究再生粗骨料沥青混合料的黏弹性特征,针对4种取代率的再生... 详细信息

再生骨料是一种将建筑垃圾中的混凝土块等废料加工而成的再生产品,它可以替代部分天然骨料加入沥青混合料中铺筑路面,有助于减少对天然石材的开采,降低沥青路面的成本。为了研究再生粗骨料沥青混合料的黏弹性特征,针对4种取代率的再生骨料沥青混合料,采用不同频率和温度下的动态模量试验,通过Sigmoid函数建立动态模量和相位角的主曲线,探究再生骨料的掺量(0%、17%、37%、56.7%)对AC-20沥青混合料动态黏弹性特性的影响变化。研究结果表明:在相同频率、相同温度下随着再生骨料掺量的增加,沥青混合料的动态模量减小,这种现象在低温高频条件下表现得更为明显。低温和常温条件下(–10、5、20℃),沥青混合料的相位角随着再生骨料掺量增大而减小,随着频率增加而减小,在中高温条件下再生骨料掺量的变化对沥青混合料相位角的影响规律并不统一。通过动态黏弹性拟合参数结果分析发现Sigmoid模型的拟合参数变化趋势与再生掺量增幅之间存在着较大的相关性。该研究聚焦于道路工程中建筑垃圾资源化利用的环保设计需求,可为建筑垃圾应用于道路养护工程提供试验参考,可作为教学案例应用于工程领域的研究生课程。

关键词：再生骨料沥青混合料动态模量试验相位角动态黏弹性

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我国智慧农业的发展现状、路径与对策建议

智慧农业导刊 2024年第10期4卷 1-4页

作者：吴宗钒易春龙吴争光吴光星中工武大设计集团有限公司武汉430223 湖北省精准农业工程技术研究中心武汉430070

为进一步促进农业高质量发展,推动农业供给侧结构性改革,我国在智慧农业建设方面作出重大部署。该文首先介绍智慧农业的提出背景和内涵,分析当前我国智慧农业发展情况,指出我国智慧农业发展存在的问题,从完善顶层设计、提升核心技术、... 详细信息

为进一步促进农业高质量发展,推动农业供给侧结构性改革,我国在智慧农业建设方面作出重大部署。该文首先介绍智慧农业的提出背景和内涵,分析当前我国智慧农业发展情况,指出我国智慧农业发展存在的问题,从完善顶层设计、提升核心技术、培育新型经营主体和深化产学研用联动等方面提出推动我国智慧农业高质量发展的路径与对策建议。

关键词：智慧农业数字化转型技术创新农业改革高质量发展

One-pot Synthesis of 1,5-Diaza-2,6-cyclooctadiene-3,7-dicarboxylates Through a Multiple-component Reaction

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Chemical Research in Chinese Universities 2014年第3期30卷 387-389页

作者： LI Yufeng WANG Xinglong LI Wei wu zhengguang SHI Jie MA Hongfei College of Science Nanjing Tech University Nanjing 211816 P. R. China

Methyl propiolate, formaldehyde, and various acyclic amines were assembled in one-pot into a series of 1,5-diaza-2,6-cyclooctadiene-3,7-dicarboxylates in moderate to good yields. This multiple-component reaction benef... 详细信息

关键词： Multiple-component reaction Methyl propiolate 1,5-Diaza-2,6-cyclooctadiene-3,7-dicarboxylate

Sheep-related Culture of Guizhou

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China & The World Cultural Exchange 2003年第2期69卷 35-37页

作者： wu zhengguang

Sheep and goats, major livestock in Guizhou Steppe of southwest China, are of both practical and social value for local dwellers. As sheep is pronounced similar as "auspicious" in Chinese, its image is widely applied to every aspect of local society, including religious rites, calendar calculation, arts creation and architecture. Thus a sheep-related culture has been developed and prospered.

关键词：中国贵州羊文化建筑艺术日常生活

White-skin Paper of Miao Villages

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China & The World Cultural Exchange 2008年第6期74卷 34-35页

作者： wu zhengguang

White-skin paper enjoys a special position in the culture of Miao ethnic group. It is used as paper-cut sketches for embroideries and to pack silver adornments and festive apparels of Miao people. It is said that worm... 详细信息

关键词：村庄白种人苗族文化特征