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Multi-objective Optimization of Multi-Agent Elevator Group Control System Based on Real-time Particle Swarm Optimization Algorithm 被引量:3
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作者 Yanwu Gu 《Engineering(科研)》 2012年第7期368-378,共11页
In order to get a globally optimized solution for the Elevator Group Control System (EGCS) scheduling problem, an algorithm with an overall optimization function is needed. In this study, Real-time Particle Swarm Opti... In order to get a globally optimized solution for the Elevator Group Control System (EGCS) scheduling problem, an algorithm with an overall optimization function is needed. In this study, Real-time Particle Swarm Optimization (RPSO) is proposed to find an optimal solution to the EGCS scheduling problem. Different traffic patterns and controller mechanisms for EGCS are analyzed. This study focuses on up-peak traffic because of its critical importance to modern office buildings. Simulation results show that EGCS based on Multi-Agent Systems (MAS) using RPSO gives good results for up-peak EGCS scheduling problem. Besides, the elevator real-time scheduling and reallocation functions are realized based on RPSO in case new information is available or the elevator becomes busy because it is unavailable or full. This study contributes a new scheduling algorithm for EGCS, and expands the application of PSO. 展开更多
关键词 MULTI-AGENT system ELEVATOR group control system REAL-TIME Particle SWARM Optimization Up-Peak Traffic
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A Dynamic Active Multicast Group Access Control Framework Based on Trust Management System
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作者 YANG Chang CHEN Xiaolin ZHANG Huanguo 《Wuhan University Journal of Natural Sciences》 CAS 2006年第6期1809-1813,共5页
The current multicast model provides no access control mechanism. Any host can send data directly to a multicast address or join a multicast group to become a member, which brings safety problems to multicast. In this... The current multicast model provides no access control mechanism. Any host can send data directly to a multicast address or join a multicast group to become a member, which brings safety problems to multicast. In this paper, we present a new active multicast group access control mechanism that is founded on trust management. This structure can solve the problem that exists in multicast members' access control and distributing authorization of traditional IP multicast. 展开更多
关键词 active multicast group access control trust management distributed authorization
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Group Hybrid Coordination Control of Multi-Agent Systems With Time-Delays and Additive Noises
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作者 Chuanjian Li Xiaofeng Zong 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第3期737-748,共12页
A new kind of group coordination control problemgroup hybrid coordination control is investigated in this paper.The group hybrid coordination control means that in a whole multi-agent system(MAS)that consists of two s... A new kind of group coordination control problemgroup hybrid coordination control is investigated in this paper.The group hybrid coordination control means that in a whole multi-agent system(MAS)that consists of two subgroups with communications between them,agents in the two subgroups achieve consensus and containment,respectively.For MASs with both time-delays and additive noises,two group control protocols are proposed to solve this problem for the containment-oriented case and consensus-oriented case,respectively.By developing a new analysis idea,some sufficient conditions and necessary conditions related to the communication intensity betw een the two subgroups are obtained for the following two types of group hybrid coordination behavior:1)Agents in one subgroup and in another subgroup achieve weak consensus and containment,respectively;2)Agents in one subgroup and in another subgroup achieve strong consensus and containment,respectively.It is revealed that the decay of the communication impact betw een the two subgroups is necessary for the consensus-oriented case.Finally,the validity of the group control results is verified by several simulation examples. 展开更多
关键词 Additive noises consensus control containment control group hybrid coordination control multi-agent systems(MASs) TIME-DELAYS
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Controllability of heterogeneous interdependent group systems under undirected and directed topology
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作者 Hui-Qin Pei Shi-Ming Chen 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第10期642-651,共10页
The controllability problem of heterogeneous interdependent group systems with undirected and directed topology is investigated in this paper. First, the interdependent model of the heterogeneous system is set up acco... The controllability problem of heterogeneous interdependent group systems with undirected and directed topology is investigated in this paper. First, the interdependent model of the heterogeneous system is set up according to the difference of individual characteristics. An extended distributed protocol with the external sliding-mode control is designed, under which it is shown that a heterogeneous interdependent group system is controllable when the corresponding communication topology is controllable. Then, using the network eigenvalue method, the driving individuals are determined for a heterogeneous system with undirected topology. Under directed topology, the maximum match method is utilized to confirm the driving individuals. Some sufficient and necessary conditions are presented to assure that the heterogeneous interdependent group system is structurally controllable. Via theoretical analysis, the controllability of heterogeneous interdependent systems is related to the interdependent manner and the structure of the heterogeneous system. Numerical simulations are provided to demonstrate the effectiveness of the theoretical results. 展开更多
关键词 controlLABILITY heterogeneous group systems interdependent model sliding-mode control
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Consensus intuitionistic fuzzy group decision-making method for aircraft cockpit display and control system evaluation 被引量:6
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作者 Tao Geng An Zhang Guangshan Lu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2013年第4期634-641,共8页
A novel group decision-making (GDM) method based on intuitionistic fuzzy sets (IFSs) is developed to evaluate the ergonomics of aircraft cockpit display and control system (ACDCS). The GDM process with four step... A novel group decision-making (GDM) method based on intuitionistic fuzzy sets (IFSs) is developed to evaluate the ergonomics of aircraft cockpit display and control system (ACDCS). The GDM process with four steps is discussed. Firstly, approaches are proposed to transform four types of common judgement representations into a unified expression by the form of the IFS, and the features of unifications are analyzed. Then, the aggregation operator called the IFSs weighted averaging (IFSWA) operator is taken to synthesize decision-makers’ (DMs’) preferences by the form of the IFS. In this operator, the DM’s reliability weights factors are determined based on the distance measure between their preferences. Finally, an improved score function is used to rank alternatives and to get the best one. An illustrative example proves the proposed method is effective to valuate the ergonomics of the ACDCS. 展开更多
关键词 aircraft cockpit display and control system (ACDCS) group decision-making (GDM) intuitionistic fuzzy set (IFS) different preference representation weighted averaging (WA) operator.
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GROUP VELOCITY CONTROL SCHEME WITH LOW DISSIPATION 被引量:3
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作者 程军波 傅德薰 马延文 《Chinese Journal of Aeronautics》 SCIE EI CSCD 2000年第3期138-145,共8页
In order to prevent smearing the discontinuity, a modified term is added to the third order Upwind Compact Difference scheme to lower the dissipation error. Moreover, the dispersion error is controled to hold back the... In order to prevent smearing the discontinuity, a modified term is added to the third order Upwind Compact Difference scheme to lower the dissipation error. Moreover, the dispersion error is controled to hold back the non physical oscillation by means of the group velocity control. The scheme is used to simulate the interactions of shock density stratified interface and the disturbed interface developing to vortex rollers. Numerical results are satisfactory. 展开更多
关键词 low dissipation error group velocity control upwind compact difference scheme interactions of shock density stratified interface
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Elevator Group-Control Policy Based on Neural Network Optimized by Genetic Algorithm 被引量:1
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作者 沈虹 万健如 +2 位作者 张志超 刘英培 李光叶 《Transactions of Tianjin University》 EI CAS 2009年第4期245-248,共4页
Aiming at the diversity and nonlinearity of the elevator system control target, an effective group method based on a hybrid algorithm of genetic algorithm and neural network is presented in this paper. The genetic alg... Aiming at the diversity and nonlinearity of the elevator system control target, an effective group method based on a hybrid algorithm of genetic algorithm and neural network is presented in this paper. The genetic algorithm is used to search the weight of the neural network. At the same time, the multi-objective-based evaluation function is adopted, in which there are three main indicators including the passenger waiting time, car passengers number and the number of stops. Different weights are given to meet the actual needs. The optimal values of the evaluation function are obtained, and the optimal dispatch control of the elevator group control system based on neural network is realized. By analyzing the running of the elevator group control system, all the processes and steps are presented. The validity of the hybrid algorithm is verified by the dynamic imitation performance. 展开更多
关键词 elevator group control genetic algorithm neural network hybrid algorithm
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THE CONTROL OF POLYMETHACRYLATE MOLECULAR STRUCTURE BY GROUP TRANSFER POLYMERIZATION
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作者 OWEN W. WEBSTER 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1990年第1期1-9,共9页
INTRODUCTION Group transfer polymerization (GTP) is a method for controlling the structure of acrylic polymers in which reactive chain ends are covalentiy bound to a trimethylsilyl group. In the presence of a catalyst... INTRODUCTION Group transfer polymerization (GTP) is a method for controlling the structure of acrylic polymers in which reactive chain ends are covalentiy bound to a trimethylsilyl group. In the presence of a catalyst, monomer inserts into these chain ends between the silyl group and the last monomer unit. The process is illustrated by equation (1) for methyl methacrylate. GTP is a living polymerization, i. e., there is little or no chain termination and no chain transfer. A significant advantage of GTP is that it 展开更多
关键词 PMMA EA GTP rate PBMA THE control OF POLYMETHACRYLATE MOLECULAR STRUCTURE BY group TRANSFER POLYMERIZATION
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The Development Strategy of China Bao'an Group──From Investment Control Group to Bao'an Financial Group
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《China Today》 1997年第8期59-61,共3页
关键词 US The Development Strategy of China Bao’an group group From Investment control group to Bao’an Financial
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Application Experience of Quality Control Group Management Mode in Emergency Department Nursing Management
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作者 CHENRong 《外文科技期刊数据库(文摘版)医药卫生》 2022年第9期035-038,共4页
Objective: to sort out the clinical value of implementing quality control group management mode in emergency department nursing management, so as to provide reference and reference for gradually improving the quality ... Objective: to sort out the clinical value of implementing quality control group management mode in emergency department nursing management, so as to provide reference and reference for gradually improving the quality of emergency nursing. Methods: to sort out the nursing quality assessment results of the nursing staff in the emergency department of our hospital during the period from January 2019 to December 20, 2019, and then compare them with the nursing quality assessment results of the nursing staff after the establishment of the nursing quality control group in 2021, so as to provide reference and reference for the preparation of a scientific, standardized and efficient emergency nursing management plan, so as to continuously improve the nursing level of the undergraduate department. Results: according to the same version of the emergency nursing quality standard, the emergency nursing quality assessment was carried out in 2019 and 2021. It can be found that in 2019, the average of the assessment results was (93.23 ± 2.46) points, and the number of adverse reaction events in the undergraduate department was 10 pieces. In 2021, the average result of roast goose was (97.02 ± 1.49) points, and the number of adverse reaction events occurred in the undergraduate room was 4 pieces. The difference between the two data was prominent and there was a statistical advantage (P < 0.05). Conclusion: in the nursing management of the emergency department, the establishment of the nursing quality control team can play a positive role. It can detect the shortcomings and shortcomings of the nursing period at the first time, and analyze and rectify the root causes, so as to avoid risks, and improve the clinical nursing level and patient satisfaction. 展开更多
关键词 quality control group management mode emergency department nursing management application experie
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Influence of Infection Control Professional Group on Surgical Site Infection in Obstetrics and Gynecology Patients
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作者 WANG Sumei 《外文科技期刊数据库(文摘版)医药卫生》 2021年第9期073-076,共6页
Objective: to study the specific effect of setting up a professional infection control team in hospital on surgical site infection in obstetrics and gynecology patients. Methods: a total of 300 cases of surgery patien... Objective: to study the specific effect of setting up a professional infection control team in hospital on surgical site infection in obstetrics and gynecology patients. Methods: a total of 300 cases of surgery patients in the department of obstetrics and gynecology admitted to our hospital since 2019 to 2020 were selected and randomly divided into the control group and the research group, with 150 cases in each group. A comparative study was conducted on the infection situation and specific control situation of the two groups to analyze the specific effects. Results: the incidence of surgical infection site in the control group was significantly higher, and the difference between the two groups was statistically significant. The research group was significantly better than the control group in terms of quality management, and the quality management score was higher. The experimental results of the two groups were different. Conclusion: the hospital through the establishment of obstetrics and gynecology hospital professional team, can reduce surgical site infections, obstetrics and gynecology patients to improve the control level of medical staff have very obvious effect, to promote the use of in the hospital, can reduce medical disputes, to alleviate the doctor-patient relationship has very obvious effect. 展开更多
关键词 sensory control professional group obstetrics and gynecology patients surgical conditions infecti
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Some Group Runs Based Multivariate Control Charts for Monitoring the Process Mean Vector
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作者 Mukund Parasharam Gadre Vikas Chintaman Kakade 《Open Journal of Statistics》 2016年第6期1098-1109,共13页
In this article, we propose two control charts namely, the “Multivariate Group Runs’ (MV-GR-M)” and the “Multivariate Modified Group Runs’ (MV-MGR-M)” control charts, based on the multivariate normal processes, ... In this article, we propose two control charts namely, the “Multivariate Group Runs’ (MV-GR-M)” and the “Multivariate Modified Group Runs’ (MV-MGR-M)” control charts, based on the multivariate normal processes, for monitoring the process mean vector. Methods to obtain the design parameters and operations of these control charts are discussed. Performances of the proposed charts are compared with some existing control charts. It is verified that, the proposed charts give a significant reduction in the out-of-control “Average Time to Signal” (ATS) in the zero state, as well in the steady state compared to the Hotelling’s T2 and the synthetic T2 control charts. 展开更多
关键词 Some group Runs Based Multivariate control Charts for Monitoring the Process Mean Vector
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铁路列车群运行多智能体感知模型与仿真
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作者 骆晖 《铁道运输与经济》 北大核心 2026年第1期141-150,共10页
为探讨铁路高精度与智能化运行仿真,研究铁路工程数据驱动建模与列车群多智能体自主感知仿真理论与方法。首先以工程勘察设计数据驱动生成线路等矢量数据模型,构建轨道区段、信号机、道岔、列车等智能体模型;其次研究单列车自主感知控... 为探讨铁路高精度与智能化运行仿真,研究铁路工程数据驱动建模与列车群多智能体自主感知仿真理论与方法。首先以工程勘察设计数据驱动生成线路等矢量数据模型,构建轨道区段、信号机、道岔、列车等智能体模型;其次研究单列车自主感知控制模型的构建与运行;最后通过构建CTC智能体实现数据感知与处理分析、列车群运行状态的动态监控与调度,完成列车群自主仿真运行。仿真实验结果表明,在CTC智能体的智能监测和决策下,单列车及列车群模型可实现安全、高效地仿真运行。研究通过数据驱动建模,解决传统仿真系统模型精度不足、建模效率低下的问题,通过CTC智能体集中控制,实现列车群的协同仿真与自主决策,为构建自主化、智能化的铁路运输仿真系统提供了理论支撑和技术路径,为铁路线路及车站设计、能力评估提供高可信度仿真工具。 展开更多
关键词 数据驱动建模 铁路运行仿真 列车群多智能体 CTC智能体 自主感知控制
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Group Formation Tracking Control for Air–Ground Multi-Agent Systems
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作者 Haichao Liu Juntong Qi +4 位作者 Yan Peng Yuan Ping Chong Wu Mingming Wang Hailong Huang 《Guidance, Navigation and Control》 2025年第2期255-269,共15页
This paper presents a weight-based group formation tracking control method for air–ground multi-agent systems,where the system consists of unmanned aerial vehicles(UAVs)and unmanned ground vehicles(UGVs).Specifically... This paper presents a weight-based group formation tracking control method for air–ground multi-agent systems,where the system consists of unmanned aerial vehicles(UAVs)and unmanned ground vehicles(UGVs).Specifically,a three-layer directed communication topology consisting of a master leader,group leaders,and followers is designed first.Subsequently,a formation tracking controller is developed,and the stability of the system is proven using Lyapunov theory.Additionally,to address the collision issues that can arise during the grouping and flight of multi-UAV formations,a collision avoidance controller is designed based on a rotational potential field function.Finally,simulation experiments validate that the proposed method can achieve stable and safe grouping,formation,and collaborative tracking of air–ground multi-agent systems. 展开更多
关键词 Air–ground cooperative control group formation tracking control consensus theory automatic grouping
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A Novel Sliding-mode Guidance Law Based on Lie-group Method
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作者 韩大鹏 孙未蒙 刘昆 《Defence Technology(防务技术)》 SCIE EI CAS 2010年第1期25-34,共10页
Although the channel-decoupling assumption is often used in design of three-dimensional guidance laws, it loses its rationality for aircrafts with strong kinematics coupling because body rotation arises. To overcome t... Although the channel-decoupling assumption is often used in design of three-dimensional guidance laws, it loses its rationality for aircrafts with strong kinematics coupling because body rotation arises. To overcome this trouble, a novel guiding method was proposed based on Lie-group. After a model of 3D guidance is formulated using vectors, the precision guidance with ending angular constraints can be transformed into a problem involving the relation between directional angles and rotational angular velocities of certain vectors. When the guidance model is imposed a SO(3)-based description, a novel 3D sliding mode guidance law with ending angular constraints can be developed via Lie-group control method and variable structure control theory. Finally, the feasibility and performance of the guidance law were shown by simulating the examples. 展开更多
关键词 control and navigation technology of aircraft multi-constraint guidance Lie group control sliding-mode control
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Observation on the Application of Quality Control Team Management in Nursing of Breast Surgery
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作者 WANG Jing 《外文科技期刊数据库(文摘版)医药卫生》 2021年第11期721-722,共3页
Objective: to analyze the effect of quality control group management in the nursing of nail breast surgery. Methods: from December 2020 to April 2021, 98 cases of patients undergoing nail breast surgery in our hospita... Objective: to analyze the effect of quality control group management in the nursing of nail breast surgery. Methods: from December 2020 to April 2021, 98 cases of patients undergoing nail breast surgery in our hospital were selected as the observation objects of this study. The patients were randomly divided into two groups. The control group adopted routine nursing, and the observation group adopted routine nursing + quality control management. The occurrence of nursing errors and patient satisfaction were compared between the two groups. Results: the incidence of adverse events in observation group was 8.16%, which was lower than that in control group (26.52%) (P < 0.05). The satisfaction of the observation group was 93.88%, which was higher than that of the control group (80.43%) (P < 0.05). Conclusion: the intervention of quality control management on the basis of routine nursing can effectively reduce the occurrence of adverse events such as nursery-patient disputes, improve patient satisfaction, and the effect is ideal. 展开更多
关键词 quality control group management breast surgery application of observation
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A review of aerial manipulation of small-scale rotorcraft unmanned robotic systems 被引量:26
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作者 Xilun DING Pin GUO +1 位作者 Kun XU Yushu YU 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2019年第1期200-214,共15页
Small-scale rotorcraft unmanned robotic systems(SRURSs) are a kind of unmanned rotorcraft with manipulating devices. This review aims to provide an overview on aerial manipulation of SRURSs nowadays and promote relati... Small-scale rotorcraft unmanned robotic systems(SRURSs) are a kind of unmanned rotorcraft with manipulating devices. This review aims to provide an overview on aerial manipulation of SRURSs nowadays and promote relative research in the future. In the past decade, aerial manipulation of SRURSs has attracted the interest of researchers globally. This paper provides a literature review of the last 10 years(2008–2017) on SRURSs, and details achievements and challenges. Firstly, the definition, current state, development, classification, and challenges of SRURSs are introduced. Then, related papers are organized into two topical categories: mechanical structure design, and modeling and control. Following this, research groups involved in SRURS research and their major achievements are summarized and classified in the form of tables. The research groups are introduced in detail from seven parts. Finally, trends and challenges are compiled and presented to serve as a resource for researchers interested in aerial manipulation of SRURSs. The problem,trends, and challenges are described from three aspects. Conclusions of the paper are presented,and the future of SRURSs is discussed to enable further research interests. 展开更多
关键词 AERIAL MANIPULATION Mechanical structure design Modeling and control Research groupS SMALL-SCALE ROTORCRAFT unmanned AERIAL systems TRENDS and challenges
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重载列车群组运行控制系统及控制理论研究综述
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作者 宋宗莹 张辰东 +3 位作者 王兴中 张韦 王文斌 李湘宜 《铁道运输与经济》 北大核心 2025年第10期17-29,共13页
重载列车群组运行控制系统创新加密提效技术路线,以单元列车协同群组化运行实现区间高密度紧追踪和站内高效接发车,为突破重载铁路运输瓶颈、提高重载铁路运能运量提供了一种新模式。针对重载列车群组运行控制系统概念、架构、组成、地... 重载列车群组运行控制系统创新加密提效技术路线,以单元列车协同群组化运行实现区间高密度紧追踪和站内高效接发车,为突破重载铁路运输瓶颈、提高重载铁路运能运量提供了一种新模式。针对重载列车群组运行控制系统概念、架构、组成、地面和车载设备、功能、运行过程、效果以及与典型列控系统的对比进行阐述,从概念、原理及控制算法优劣势等方面描述列车运行模型及多种具有代表性的控制方法,说明对应控制方法在控制性能方面的优缺点以及针对群组列控系统的适配性,并从系统应用、优化、演进以及控制理论模型、策略研究方面对未来的研究方向进行展望,为构建满足铁路运能提升、运输安全及多制式兼容要求的群组列控系统奠定基础。 展开更多
关键词 列车运行控制系统 群组运行 系统架构 协同控制 控制方法
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电梯群控仿真模型构建及群控调度策略研究
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作者 魏东 张靖媛 方硕 《控制工程》 北大核心 2025年第10期1895-1905,共11页
当前电梯群控调度系统的调试安全性不足、设计评估难度大、调试成本高昂。为此,构建了电梯群控仿真模型,并基于该模型,根据乘客平均候梯时间、长时间候梯率、电梯能耗等指标对电梯群控调度方案进行动态评估。针对电梯运行效率和乘客乘... 当前电梯群控调度系统的调试安全性不足、设计评估难度大、调试成本高昂。为此,构建了电梯群控仿真模型,并基于该模型,根据乘客平均候梯时间、长时间候梯率、电梯能耗等指标对电梯群控调度方案进行动态评估。针对电梯运行效率和乘客乘梯舒适度有待提高的问题,采用深度Q网络(deep Q network,DQN)实现电梯群控优化调度,根据影响电梯运载效率的主要因素设计相应的状态空间、奖励信号和智能体结构;鉴于强化学习智能体的在线训练耗时长,无法提供实时决策,利用电梯群控仿真模型的运行数据训练前馈神经网络,构建电梯群控环境预测模型作为智能体训练环境。在电梯群控仿真模型中进行仿真实验,结果表明:相较于目前广泛应用的最小响应时间策略,所提策略减少了乘客平均候梯时间、乘客平均乘梯时间、长时间候梯率、电梯启停次数,增加了5 min平均到达人数。 展开更多
关键词 强化学习 深度Q网络 电梯群控系统 电梯调度
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群控导叶底部造流系统仿真研究
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作者 徐剑 胡涛 +3 位作者 盛其虎 潘欣钰 徐永春 黄宏 《船舶标准化工程师》 2025年第2期75-78,共4页
为了提升底部造流水动力试验装置测试区域流态,针对可调角度导叶组进行多工况计算流体力学(CFD)模拟对比优化。结果表明:在8 m、6 m和4 m等不同水深工况下,调节进水端导叶组角度分别为50°、40°和30°,出水端导叶组角度统... 为了提升底部造流水动力试验装置测试区域流态,针对可调角度导叶组进行多工况计算流体力学(CFD)模拟对比优化。结果表明:在8 m、6 m和4 m等不同水深工况下,调节进水端导叶组角度分别为50°、40°和30°,出水端导叶组角度统一为30°时,测试区可形成平均流速为1m/s、均匀度为±15%的水流,且减少了回水端管路中涡流区的存在。因此,通过可调角度导流措施可使得底部造流系统在不影响大水深造波的前提下在测试区和回水管道中形成较为均匀的水流分布。 展开更多
关键词 导叶 群控 造流系统 计算流体力学
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