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A feedback control method for the stabilization of a nonlinear diffusion system on a graph
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作者 于欣 许超 林群 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第8期240-245,共6页
In this paper, we consider the internal stabilization problems of FitzHugh-Nagumo (FHN) systems on the locally finite connected weighted graphs, which describe the process of signal transmission across axons in neur... In this paper, we consider the internal stabilization problems of FitzHugh-Nagumo (FHN) systems on the locally finite connected weighted graphs, which describe the process of signal transmission across axons in neurobiology. We will establish the proper condition on the weighted Dirichlet-Laplace operator on a graph such that the nonlinear FHN system can be stabilized exponentially and globally only using internal actuation over a sub-domain with a linear feedback form. 展开更多
关键词 FitzHugh-Nagumo system graph STABILIZATION internal controller
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基于Graph图形控件技术的休哈特控制图设计与实现 被引量:2
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作者 刘宇 赵嵩正 徐恒 《微型电脑应用》 2007年第6期51-52,55,共3页
以Adaptive Server Anywhere为后台数据库管理系统,以PowerBuilder为前台开发工具,利用Graph图形控件技术设计与实现了质量管理中休哈特控制图的计算机绘制。该方法可广泛应用于质量管理信息系统的开发中。
关键词 graph图形控件 休哈特控制图 POWERBUILDER
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基于Visual Graph的电气控制仿真 被引量:1
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作者 霍俊仪 靳会超 《石家庄铁路职业技术学院学报》 2006年第2期68-70,共3页
主要介绍软件VisualGraph在电气控制电路仿真方面的应用。以“电动机正反转控制”为例,说明如何利用VisualGraph实现对电气控制电路的仿真。
关键词 VISUAL graph 电气控制 仿真
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钠离子通道阻滞剂药物治疗颞叶癫痫相关的脑功能复杂网络的变化
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作者 罗翠蜜 陈子蓉 +1 位作者 黄东莹 郑金瓯 《实用医学杂志》 北大核心 2025年第2期250-257,共8页
目的 探讨钠离子通道阻滞剂(SCB)治疗相关的脑功能复杂网络的变化以及对执行控制功能影响的神经机制。方法 将21例服用SCB的颞叶癫痫患者(TLE-SCB)和12例未服用SCB的颞叶癫痫患者(TLE-N)与18例健康对照(HC)一起纳入研究。完成行静息态... 目的 探讨钠离子通道阻滞剂(SCB)治疗相关的脑功能复杂网络的变化以及对执行控制功能影响的神经机制。方法 将21例服用SCB的颞叶癫痫患者(TLE-SCB)和12例未服用SCB的颞叶癫痫患者(TLE-N)与18例健康对照(HC)一起纳入研究。完成行静息态功能磁共振成像(rs-fMRI)和注意网络测试(ANT),应用图论方法研究3组受试者脑功能复杂网络的变化,研究脑网络变化与执行功能的关系。结果 TLE-SCB组和TLE-N组相比HC组均出现执行功能损害。脑网络拓扑属性分析结果显示,TLE-SCB组与TLE-N组相比,多个节点介数中心性降低(均Bonferroni校正,P <0.017);右侧杏仁核节点聚类系数、左侧枕下回局部效率都降低(t=-2.953,P=0.006;t=-2.597,P=0.0142)。TLE-SCB相比于HC组,多个节点介数中心性降低(均Bonferroni校正,P <0.017);左侧眶部额中回节点聚类系数增加(t=2.861,P=0.007);左侧颞下回局部效率降低(t=-2.870,P=0.007)。TLE-N组相比于HC组,右侧中央旁小叶介数中心性、局部效率增加(t=2.644,P=0.013;t=3.464,P=0.002);右侧杏仁核节点聚类系数增加(t=2.884,P=0.007)。相关分析显示:TLE-SCB组左侧枕下回介数中心性降低与执行效率呈负相关(P=0.045,r=-0.441)。结论 使用SCB药物患者出现相关脑功能网络拓扑属性的改变,可能是SCB认知障碍的网络基础。左侧枕下回可能在使用SCB的癫痫患者执行控制功能损害中发挥重要作用。 展开更多
关键词 颞叶癫痫 钠离子通道阻滞剂 图论 复杂网络 执行控制功能
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S7-GRAPH在桑葚饮料生产线控制系统中的应用 被引量:1
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作者 李妙祺 杨婉霞 王关平 《自动化与仪器仪表》 2014年第12期145-146,共2页
传统的桑葚饮料加工系统各设备分立,加工转运过程需要大量的人工,生产效率低下并且生产成本高。本文使用西门子PLC S7-GRAPH编程软件为桑葚生产线设计了控制流程,并且介绍了S7-GRAPH和别的编程方法相比较的优点。
关键词 S7-graph PLC 桑葚饮料加工 控制系统
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Visual Graph动画在“电气控制与PLC技术”教学中的应用
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作者 翁国庆 《科教导刊》 2022年第29期116-119,共4页
Visual Graph是近年来出现的新型图形交互和动画展示技术,具有直观性好、交互性强等优点。文章从“电气控制与PLC技术”课程的实际教学效果出发,讨论了课程动画辅助教学的需求分析和规划,并展示了典型动画设计案例,供广大教学人员参考。
关键词 Visual graph 动画辅助教学 电气控制
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基于知识图谱的中职《数控技术》新形态AI课程研究与实践
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作者 甘志玮 《模具制造》 2025年第1期42-44,48,共4页
针对中职《数控技术》科目教学中存在的理论与实际脱节、传统教学方法与学生需求不匹配等问题,提出了基于知识图谱技术构建的新形态AI课程教学模式,并在此框架下设计并实施了相关的教学实践。通过构建知识图谱,让学生在学习《数控技术... 针对中职《数控技术》科目教学中存在的理论与实际脱节、传统教学方法与学生需求不匹配等问题,提出了基于知识图谱技术构建的新形态AI课程教学模式,并在此框架下设计并实施了相关的教学实践。通过构建知识图谱,让学生在学习《数控技术》时得以形成完整的知识结构,同时运用知识图谱嵌入技术将复杂的数控知识体系转换为低维度、高效率的知识表示形式。在教学实施方面,采取混合式教学方法,利用虚拟仿真实验室和实体实训基地相结合的方式,提高学生的实操能力。对比实验结果显示,应用该新形态AI教学模式的学生在知识理解程度、技能掌握水平以及创新思维能力等方面均有显著提高。 展开更多
关键词 中职教育 数控技术 知识图谱嵌入 AI教学模式 混合式教学
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The Formation Control of Multi-agent Systems on a Circle 被引量:4
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作者 Qiang Wang Yuzhen Wang Huaxiang Zhang 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2018年第1期148-154,共7页
This paper investigates the formation control of a class of multi-agent systems moving on a circle, whose topology is a cyclic graph, and presents several new results for the following two cases: Case I, the agents wi... This paper investigates the formation control of a class of multi-agent systems moving on a circle, whose topology is a cyclic graph, and presents several new results for the following two cases: Case I, the agents with single-integrator kinematics,and Case II, the agents with double-integrator kinematics. Firstly,for Case I, two control protocols are proposed under which the multiagent systems keep a uniformly-spaced formation. Secondly,we study Case II, and a control protocol is designed for this case, then the stability of the formation is proved. Finally, three simulations are studied by using our presented results. The study of illustrative examples with simulations shows that our results as well as designed control protocols work very well in studying the formation control of this class of multi-agent systems. 展开更多
关键词 Circle cyclic graph formation control multiagent systems uniformly spaced
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A Novel Multi-agent Formation Control Law With Collision Avoidance 被引量:8
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作者 Arindam Mondal Laxmidhar Behera +1 位作者 Soumya Ranjan Sahoo Anupam Shukla 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2017年第3期558-568,共11页
In this paper a stable formation control law that simultaneously ensures collision avoidance has been proposed.It is assumed that the communication graph is undirected and connected.The proposed formation control law ... In this paper a stable formation control law that simultaneously ensures collision avoidance has been proposed.It is assumed that the communication graph is undirected and connected.The proposed formation control law is a combination of the consensus term and the collision avoidance term(CAT).The first order consensus term is derived for the proposed model,while ensuring the Lyapunov stability.The consensus term creates and maintains the desired formation shape,while the CAT avoids the collision.During the collision avoidance,the potential function based CAT makes the agents repel from each other.This unrestricted repelling magnitude cannot ensure the graph connectivity at the time of collision avoidance.Hence we have proposed a formation control law,which ensures this connectivity even during the collision avoidance.This is achieved by the proposed novel adaptive potential function.The potential function adapts itself,with the online tuning of the critical variable associated with it.The tuning has been done based on the lower bound of the critical variable,which is derived from the proposed connectivity property.The efficacy of the proposed scheme has been validated using simulations done based on formations of six and thirty-two agents respectively. 展开更多
关键词 CONSENSUS collision avoidance formation control graph theory STABILITY
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基于交通流预测的交通信号灯控制研究
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作者 付韵竹 孙海义 +1 位作者 吴泉江 张清晨 《科学技术创新》 2025年第3期93-96,共4页
随着道路上车流量的不断增多,交通拥堵问题愈加严重。本文提出了一种基于交通流预测对交通信号灯进行控制的一种方法——TFPLight,可以根据交通流量的预测结果提前控制交通信号灯,同时可以根据车流量多少调整绿灯的持续时间:先对交通流... 随着道路上车流量的不断增多,交通拥堵问题愈加严重。本文提出了一种基于交通流预测对交通信号灯进行控制的一种方法——TFPLight,可以根据交通流量的预测结果提前控制交通信号灯,同时可以根据车流量多少调整绿灯的持续时间:先对交通流量进行预测,把结果应用于交通环境当中,加入图注意力机制以实时应对交通环境的变化,通过深度Q学习输出交通信号灯的相序,模糊逻辑算法输出绿灯的持续时间,此方法已在大规模路网进行实验,结果表明与其他几个基线模型相比所提出的模型具有更好的性能。 展开更多
关键词 交通信号灯控制 深度Q学习 模糊逻辑算法 图注意力机制
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Model-Based Fault Tolerant Control for Hybrid Dynamic Systems with Sensor Faults 被引量:3
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作者 YANG Hao MAO Ze-Hui JIANG Bin 《自动化学报》 EI CSCD 北大核心 2006年第5期680-685,共6页
A model-based fault tolerant control approach for hybrid linear dynamic systems is proposed in this paper. The proposed method, taking advantage of reliable control, can maintain the performance of the faulty system d... A model-based fault tolerant control approach for hybrid linear dynamic systems is proposed in this paper. The proposed method, taking advantage of reliable control, can maintain the performance of the faulty system during the time delay of fault detection and diagnosis (FDD) and fault accommodation (FA), which can be regarded as the first line of defence against sensor faults. Simulation results of a three-tank system with sensor fault are given to show the efficiency of the method. 展开更多
关键词 Hybrid system bond graph reliable control fault tolerant control
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Research of the Control Domain of Edges in Regression Testing 被引量:1
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作者 高建华 《Journal of Donghua University(English Edition)》 EI CAS 2005年第3期57-61,共5页
Regression testing is the process of validating modified software to provide confidence that the changed parts of the software behave as intended and that the unchanged parts have not been adversely affected by the mo... Regression testing is the process of validating modified software to provide confidence that the changed parts of the software behave as intended and that the unchanged parts have not been adversely affected by the modifications. The goal of regression testing is to reduce the test suit by testing the new characters and the modified parts of a program with the original test suit. Regression testing is a high cost testing method. This paper presents a regression testing selection technique that can reduce the test suit on the basis of Control Flow Graph (CFG). It import the inherit strategy of object-oriented language to ensure an edge’s control domain to reduce the test suit size effectively. We implement the idea by coding the edge. An algorithm is also presented at last. 展开更多
关键词 regression testing control flow graph control domain of edges code value of edge inherit strategy
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Robust Delay-dependent H∞ Consensus Control for Multi-agent Systems with Input Delays 被引量:2
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作者 LI Zhen-Xing JI Hai-Bo 《自动化学报》 EI CSCD 北大核心 2014年第11期2556-2562,共7页
关键词 多代理系统 控制输出 时滞相关 延迟 输入 状态反馈控制器 线性化算法 不确定性
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Reduced Model Based Control of Two Link Flexible Space Robot 被引量:11
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作者 Amit Kumar Pushparaj Mani Pathak Nagarajan Sukavanam 《Intelligent Control and Automation》 2011年第2期112-120,共9页
Model based control schemes use the inverse dynamics of the robot arm to produce the main torque component necessary for trajectory tracking. For model-based controller one is required to know the model parameters acc... Model based control schemes use the inverse dynamics of the robot arm to produce the main torque component necessary for trajectory tracking. For model-based controller one is required to know the model parameters accurately. This is a very difficult task especially if the manipulator is flexible. So a reduced model based controller has been developed, which requires only the information of space robot base velocity and link parameters. The flexible link is modeled as Euler Bernoulli beam. To simplify the analysis we have considered Jacobian of rigid manipulator. Bond graph modeling is used to model the dynamics of the system and to devise the control strategy. The scheme has been verified using simulation for two links flexible space manipulator. 展开更多
关键词 Flexible Space ROBOTS BOND graph Modeling REDUCED Model Based controlLER Euler-Bernoulli Beam
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Distributed tracking control of unmanned aerial vehicles under wind disturbance and model uncertainty 被引量:3
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作者 Kun Zhang Xiaoguang Gao 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2016年第6期1262-1271,共10页
A distributed robust method is developed for cooperative tracking control of unmanned aerial vehicles under unknown wind disturbance and model uncertainty. The communication network among vehicles is a directed graph ... A distributed robust method is developed for cooperative tracking control of unmanned aerial vehicles under unknown wind disturbance and model uncertainty. The communication network among vehicles is a directed graph with switching topology. Each vehicle can only share its states with its neighbors. Dynamics of the vehicles are nonlinear and affected by the wind disturbance and model uncertainty. Feedback linearization is adopted to transform the dynamics of vehicles into linear systems. To account for the wind disturbance and model uncertainty, a robust controller is designed for each vehicle such that all vehicles ultimately synchronize to the virtual leader in the three-dimensional path. It is theoretically shown that the position states of the vehicles will converge to that of the virtual leader if the communication network has a directed spanning tree rooted at the virtual leader. Furthermore, the robust controller is extended to address the formation control problem. Simulation examples are also given to illustrate the effectiveness of the proposed method. © 2016 Beijing Institute of Aerospace Information. 展开更多
关键词 Aircraft control controllers Directed graphs Feedback linearization Linear systems Mathematical transformations NAVIGATION TOPOLOGY Uncertainty analysis Unmanned aerial vehicles (UAV) VEHICLES
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Leader-following formation control of multi-agent networks based on distributed observers 被引量:4
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作者 罗小元 韩娜妮 关新平 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第10期7-15,共9页
To investigate the leader-following formation control, in this paper we present the design problem of control protocols and distributed observers under which the agents can achieve and maintain the desired formation f... To investigate the leader-following formation control, in this paper we present the design problem of control protocols and distributed observers under which the agents can achieve and maintain the desired formation from any initial states, while the velocity converges to that of the virtual leader whose velocity cannot be measured by agents in real time. The two cases of switching topologies without communication delay and fixed topology with time-varying communication delay are both considered for multi-agent networks. By using the Lyapunov stability theory, the issue of stability is analysed for multi-agent systems with switching topologies. Then, by considering the time-varying communication delay, the sufficient condition is proposed for the multi-agent systems with fixed topology. Finally, two numerical examples are given to illustrate the effectiveness of the proposed leader-following formation control protocols. 展开更多
关键词 formation control distributed observer multi-agent system graph theory
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OPTIMAL CONTROL PROBLEM OF PARABOLIC DIFFERENTIAL EQUATION WITH TWO POINT BOUNDARY CONDITION
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作者 汪更生 刘昌良 《Acta Mathematica Scientia》 SCIE CSCD 1999年第2期138-147,共10页
This paper deals with optimal control problem of parabolic differential equation with two point boundary conditions tin the time variable). The results here extend those in [3] on optimal control of the heat equations... This paper deals with optimal control problem of parabolic differential equation with two point boundary conditions tin the time variable). The results here extend those in [3] on optimal control of the heat equations. Moreover, the technique used in this paper is based on some smooth approximations of 'tangent cones' in the sense of Clarke and some maximal monotone operators. 展开更多
关键词 maximal monotone graph tangent cone OPTIMALITY control
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Stability Analysis and Hadamard Synergic Control for a Class of Dynamical Networks
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作者 Xinjin Liu Yun Zou 《Intelligent Control and Automation》 2010年第1期36-47,共12页
Hadamard synergic control is a new kind of control problem which is achieved via a composite strategy of the state feedback control and the direct regulation of the part of connection coefficients of system state vari... Hadamard synergic control is a new kind of control problem which is achieved via a composite strategy of the state feedback control and the direct regulation of the part of connection coefficients of system state variables. Such a control is actually used very often in the practical areas. In this paper, we discuss Hadamard synergic stabilization problem for a class of dynamical networks. We analyze three cases: 1) Synergic stabilization problem for the general twonodenetwork. 2) Synergic stabilization problem for a special kind of networks. 3) Synergic stabilization problem for special kind of networks with communication timedelays. The mechanism of the synergic action between two control strategies: feedback control and the connection coefficients regulations are presented. 展开更多
关键词 HADAMARD Synergic control Algebraically graph Theory DECENTRALIZED Feedback control Connection COEFFICIENT GAIN Matrix
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Consensus Control for a Kind of Dynamical Agents in Network
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作者 Hongwang Yu 《International Journal of Communications, Network and System Sciences》 2016年第1期29-37,共9页
This paper discusses consensus control for a kind of dynamical agents in network. It is assumed that the agents distributed on a plane and their location coordinates are measured by remote sensor and transmitted to it... This paper discusses consensus control for a kind of dynamical agents in network. It is assumed that the agents distributed on a plane and their location coordinates are measured by remote sensor and transmitted to its neighbors. By designing the linear distributed control protocol, it is shown that the group of agents will achieves consensus. The simulations are given to show the effectiveness of our theoretical result. 展开更多
关键词 Distributed control graph Laplacian Dynamical Agents
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Experiments in Consensus-based Decentralized Information Feedback Control Strategies on a Real Robotic Fish Platform
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作者 Hong-Fei Han Wen Tan 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2013年第5期62-68,共7页
A decentralized information feedback mechanism was introduced to a group of mobile robots such that the robots asymptotically converge to a given moving formation. While various distributed cooperative control strateg... A decentralized information feedback mechanism was introduced to a group of mobile robots such that the robots asymptotically converge to a given moving formation. While various distributed cooperative control strategies have been studied in theory,few of them have been systematically validated on experimental platforms. This paper demonstrates the experimental results of consensus-based decentralized information feedback mechanism on a multiple mobile robotic fish platform. In this paper, we firstly introduced a fundamental consensus algorithm for systems model and the cooperative control experimental platform,and then experimentally implemented and validated the formation control algorithm through setting transit point and lookup table method and so on. The experimental results show the effectiveness of the consensus-based decentralized information feedback control strategies. 展开更多
关键词 decentralized feedback formation control communication graph muhi-robot systems
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