复杂系统建模与仿真(英文)最新文献_第9页

Scheduling Storage Process of Shuttle-Based Storage and Retrieval Systems Based on Reinforcement Learning 基于强化学习的梭式存储检索系统存储过程调度

复杂系统建模与仿真(英文) Pub Date : 2021-06-01 DOI: 10.23919/CSMS.2021.0013

Lei Luo;Ning Zhao;Gabriel Lodewijks

{"title":"Scheduling Storage Process of Shuttle-Based Storage and Retrieval Systems Based on Reinforcement Learning","authors":"Lei Luo;Ning Zhao;Gabriel Lodewijks","doi":"10.23919/CSMS.2021.0013","DOIUrl":"10.23919/CSMS.2021.0013","url":null,"abstract":"The Shuttle-Based Storage and Retrieval System (SBS/RS) has been widely studied because it is currently the most efficient automated warehousing system. Most of the related existing studies are focused on the prediction and improvement of the efficiency of such a system at the design stage. Hence, the control of existing SBS/RSs has been rarely investigated. In existing SBS/RSs, some empirical rules, such as storing loads column by column, are used to control or schedule the storage process. The question is whether or not the control of the storage process in an existing system can be improved further by using a different approach. The storage process is controlled to minimize the makespan of storing a series of loads into racks. Empirical storage rules are easy to control, but they do not reach the minimum makespan. In this study, the performance of a control system that uses reinforcement learning to schedule the storage process of an SBS/RS with fixed configurations is evaluated. Specifically, a reinforcement learning algorithm called the actor-critic algorithm is used. This algorithm is made up of two neural networks and is effective in making decisions and updating itself. It can also reduce the makespan relative to the existing empirical rules used to improve system performance. Experiment results show that in an SBS/RS comprising six columns and six tiers and featuring a storage capacity of 72 loads, the actor-critic algorithm can reduce the makespan by 6.67% relative to the column-by-column storage rule. The proposed algorithm also reduces the makespan by more than 30% when the number of loads being stored is in the range of 7-45, which is equal to 9.7%-62.5% of the systems' storage capacity.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43439508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Simulation Research on Fire Evacuation of Large Public Buildings Based on Building Information Modeling 基于建筑信息建模的大型公共建筑火灾疏散仿真研究

复杂系统建模与仿真(英文) Pub Date : 2021-06-01 DOI: 10.23919/CSMS.2021.0012

Fuyu Wang;Xiao Xu;Mengkai Chen;Juma Nzige;Fawen Chong

{"title":"Simulation Research on Fire Evacuation of Large Public Buildings Based on Building Information Modeling","authors":"Fuyu Wang;Xiao Xu;Mengkai Chen;Juma Nzige;Fawen Chong","doi":"10.23919/CSMS.2021.0012","DOIUrl":"10.23919/CSMS.2021.0012","url":null,"abstract":"Reasonable evacuation strategies are important in reducing casualties in the event of a fire. In this work, we conduct a simulation of a fire evacuation of a large public building based on the building information modeling technology to find the best evacuation strategy. We identify the tolerance limit of evacuees in case of a fire as the basis of the simulation using the fire dynamics simulator software. The following four evacuation strategies are proposed and simulated: stratified evacuation only by stairs, stratified evacuation mainly by stairs and supplemented by fire elevators, holistic evacuation only by stairs, and holistic evacuation mainly by stairs and supplemented by fire elevators. The case study of a college canteen shows that if 10% of evacuees (mainly elderly people who walk slowly and children who take up less space) are instructed to evacuate via fire elevators and the other 90% of evacuees (young men and women who move fast) use the stairs, the evacuation time can be reduced to a minimum. Some improvements in the design drawing result in the enhanced efficiency of the proposed strategy. The findings of this work are of great significance for the optimization of the structural design of large public buildings and provide some references for emergency evacuation.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42081394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Public Opinion Dissemination with Incomplete Information on Social Network: A Study Based on the Infectious Diseases Model and Game Theory 不完全信息下的社会网络舆论传播——基于传染病模型和博弈论的研究

复杂系统建模与仿真(英文) Pub Date : 2021-06-01 DOI: 10.23919/CSMS.2021.0008

Bin Wu;Ting Yuan;Yuqing Qi;Min Dong

{"title":"Public Opinion Dissemination with Incomplete Information on Social Network: A Study Based on the Infectious Diseases Model and Game Theory","authors":"Bin Wu;Ting Yuan;Yuqing Qi;Min Dong","doi":"10.23919/CSMS.2021.0008","DOIUrl":"10.23919/CSMS.2021.0008","url":null,"abstract":"Given the fragmentation of public opinion dissemination and the lag of network users' cognition, the paper analyzes public opinion dissemination with incomplete information, which can provide reference for us to control and guide the spread of public opinion. Based on the derivative and secondary radiation of public opinion dissemination with incomplete information, the Susceptible-Susceptible-Infected-Recovered-Recovered-Infected (SSIRR-I) model is proposed. Given the interaction between users, the Deffuant opinion dynamics model and evolutionary game theory are introduced to simulate the public opinion game between dissemination and immune nodes. Finally, the numerical simulation and results analysis are given. The results reveal that the rate of opinion convergence significantly affects disseminating public opinion, which is positively correlated with the promotion effect of the dissemination node and negatively correlated with the suppression effect of the immune node of public opinion dissemination. Derivative and secondary radiations have different effects on public opinion dissemination in the early stage, but promote public opinion dissemination in the later stage. The dominant immune nodes have an apparent inhibitory effect on the spread of public opinion; nevertheless, they cannot block the dissemination of public opinion.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43325947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Multi-Robot Indoor Environment Map Building Based on Multi-Stage Optimization Method 基于多阶段优化方法的多机器人室内环境地图构建

复杂系统建模与仿真(英文) Pub Date : 2021-06-01 DOI: 10.23919/CSMS.2021.0011

Hui Lu;Siyi Yang;Meng Zhao;Shi Cheng

{"title":"Multi-Robot Indoor Environment Map Building Based on Multi-Stage Optimization Method","authors":"Hui Lu;Siyi Yang;Meng Zhao;Shi Cheng","doi":"10.23919/CSMS.2021.0011","DOIUrl":"10.23919/CSMS.2021.0011","url":null,"abstract":"For a multi-robot system, the accurate global map building based on a local map obtained by a single robot is an essential issue. The map building process is always divided into three stages: single-robot map acquisition, multi-robot map transmission, and multi-robot map merging. Based on the different stages of map building, this paper proposes a multi-staqe optimization (MSO) method to improve the accuracy of the global map. In the map acquisition stage, we windowed the map based on the position of the robot to obtain the local map. Furthermore, we adopted the extended Kalman filter (EKF) to improve the positioning accuracy, thereby enhancing the accuracy of the map acquisition by the single robot. In the map transmission stage, considering the robustness of the multi-robot system in the real environment, we designed a dynamic self-organized communication topology (DSCT) based on the master and slave sketch to ensure the efficiency and accuracy of map transferring. In the map merging stage, multi-layer information filtering (MLIF) was investigated to increase the accuracy of the global map. We performed simulation experiments on the Gazebo platform and compared the result of the proposed method with that of classic map building methods. In addition, the practicability of this method has been verified on the Turtlebot3 burger robot. Experimental results proved that the MSO method improves the accuracy of the global map built by the multi-robot system.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45148750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

A Threshold-Control Generative Adversarial Network Method for Intelligent Fault Diagnosis 智能故障诊断的阈值控制生成对抗网络方法

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0006

Xinyu Li;Sican Cao;Liang Gao;Long Wen

{"title":"A Threshold-Control Generative Adversarial Network Method for Intelligent Fault Diagnosis","authors":"Xinyu Li;Sican Cao;Liang Gao;Long Wen","doi":"10.23919/CSMS.2021.0006","DOIUrl":"https://doi.org/10.23919/CSMS.2021.0006","url":null,"abstract":"Fault diagnosis plays the increasingly vital role to guarantee the machine reliability in the industrial enterprise. Among all the solutions, deep learning (DL) methods have achieved more popularity for their feature extraction ability from the raw historical data. However, the performance of DL relies on the huge amount of labeled data, as it is costly to obtain in the real world as the labeling process for data is usually tagged by hand. To obtain the good performance with limited labeled data, this research proposes a threshold-control generative adversarial network (TCGAN) method. Firstly, the 1D vibration signals are processed to be converted into 2D images, which are used as the input of TCGAN. Secondly, TCGAN would generate pseudo data which have the similar distribution with the limited labeled data. With pseudo data generation, the training dataset can be enlarged and the increase on the labeled data could further promote the performance of TCGAN on fault diagnosis. Thirdly, to mitigate the instability of the generated data, a threshold-control is presented to adjust the relationship between discriminator and generator dynamically and automatically. The proposed TCGAN is validated on the datasets from Case Western Reserve University and Self-Priming Centrifugal Pump. The prediction accuracies with limited labeled data have reached to 99.96% and 99.898%, which are even better than other methods tested under the whole labeled datasets.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49910171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Nonlinear Equations Solving with Intelligent Optimization Algorithms: A Survey 非线性方程求解的智能优化算法研究进展

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0002

Wenyin Gong;Zuowen Liao;Xianyan Mi;Ling Wang;Yuanyuan Guo

引用次数: 41

3D Environmental Perception Modeling in the Simulated Autonomous-Driving Systems 模拟自动驾驶系统中的三维环境感知建模

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0004

Chunmian Lin;Daxin Tian;Xuting Duan;Jianshan Zhou

引用次数: 5

Overview of Research on Transformation of Multi-AUV Formations 多auv编队转换研究综述

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0003

Bin Xin;Junxi Zhang;Jie Chen;Qing Wang;Yun Qu

{"title":"Overview of Research on Transformation of Multi-AUV Formations","authors":"Bin Xin;Junxi Zhang;Jie Chen;Qing Wang;Yun Qu","doi":"10.23919/CSMS.2021.0003","DOIUrl":"https://doi.org/10.23919/CSMS.2021.0003","url":null,"abstract":"Because of their wide detection range and rich functions, autonomous underwater vehicles (AUVs) are widely used for observing the marine environment, for exploring natural resources, for security and defense purposes, and in many other fields of interest. Compared with a single AUV, a multi-AUV formation can better perform various tasks and adapt to complex underwater environments. With changes in the mission or environment, a change in the UAV formation may also be required. In the last decade, much progress has been made in the transformation of multi-AUV formations. In this paper, we aim to analyze the core concepts of multi-AUV formation transformation; summarize the effects of the AUV model, underwater environment, and communication between AUVs within formations on formation transformation; and elaborate on basic theories and implementation approaches for multi-AUV formation transformation. Moreover, this overview includes a bibliometric analysis of the related literature from multiple perspectives. Finally, some challenging issues and future research directions for multi-AUV formation transformation are highlighted.","PeriodicalId":65786,"journal":{"name":"复杂系统建模与仿真(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.23919/CSMS.2021.0003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49918166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Matching Uncertain Renewable Supply with Electric Vehicle Charging Demand—A Bi-Level Event-Based Optimization Method 不确定可再生能源供应与电动汽车充电需求匹配——一种双层事件优化方法

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0001

Teng Long;Qing-Shan Jia

引用次数: 9

Research on Influencing Factors of Innovation Network Performance of Industrial Enterprises above Designated Size in Nanjing Based on System Dynamics 基于系统动力学的南京规模以上工业企业创新网络绩效影响因素研究

复杂系统建模与仿真(英文) Pub Date : 2021-03-01 DOI: 10.23919/CSMS.2021.0005

Yibin Lu;Yexiang Fang

引用次数: 0