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2022 26th International Conference on System Theory, Control and Computing (ICSTCC)最新文献

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Parametrization of Airloads Using a Homogeneity-based Orthogonal Decomposition 基于齐次正交分解的航空载荷参数化
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931879
Finn Matras, D. Reinhardt, M. D. Pedersen
This work proposes a novel parametrization strategy for steady aerodynamic forces. We point out that air-loads are homogeneous and enforce this property by using a parametrization based on spherical harmonics. The parametrization enables an analogue of frequency-based truncation and a variation on the Singular Value Decomposition (SVD), constituting an orthogonal decomposition of the modeled airloads. The method's utility is showcased for model reduction and identification purposes.
本文提出了一种新的定常气动力参数化策略。我们指出空气载荷是均匀的,并通过基于球谐波的参数化来强化这一性质。参数化实现了基于频率的截断和奇异值分解(SVD)的变化的模拟,构成了模型航空载荷的正交分解。该方法的实用程序展示了模型简化和识别的目的。
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引用次数: 1
Object Detection in Invoices 发票中的对象检测
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931900
Andrei-Stefan Bulzan, C. Cernazanu-Glavan
Key field information extraction from documents is an increasingly covetable task. Previous related work has touched upon the subject through the lens of rule-based systems or through natural language processing methods. In this paper we see the task of information extraction from invoices as an object detection task. To this end, we used three different models YOLOv5, Scaled YOLOv4 and Faster R-CNN to detect key field information in invoices. Additionally, we propose a data preprocessing method that helps to better generalize the learning. All of the experiments were performed on a custom made dataset with a very high variety of invoice layouts. This decision comes in part from the lack of any suitable public dataset and from the need of finding the best procedure for annotating data pertaining to this task. The obtained results were encouraging, leading us to the conclusion that object detection is a viable method for information extraction.
从文档中提取关键字段信息是一项越来越令人垂涎的任务。以前的相关工作已经通过基于规则的系统或通过自然语言处理方法触及了这个主题。在本文中,我们把从发票中提取信息的任务看作是一个对象检测任务。为此,我们使用了三种不同的模型YOLOv5、Scaled YOLOv4和Faster R-CNN来检测发票中的关键字段信息。此外,我们提出了一种数据预处理方法,有助于更好地推广学习。所有的实验都是在一个定制的数据集上进行的,其中包含各种各样的发票布局。这一决定部分来自于缺乏任何合适的公共数据集,以及需要找到最好的过程来注释与此任务相关的数据。得到的结果令人鼓舞,使我们得出结论,目标检测是一种可行的信息提取方法。
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引用次数: 0
Model-free Control Under Passivity Constraint Applied to BLDC control 无源约束下无模型控制在无刷直流电机控制中的应用
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931864
Razvan Mocanu, A. Onea
The objective of this work is to derive the requirements for passivity for a model-free control strategy. We describe a method for model-free control of passive systems that can be applied to the speed control of a DC synchronous machine. The approach is intended for systems that are internally passive. We establish the conditions for the interconnected system's passivity. We use the strategy to control the angular velocity of a brushless DC machine (BLDC). Theoretical results are supported by simulation and experimental results, which demonstrate the effectiveness of the algorithm.
这项工作的目标是推导出无模型控制策略的被动需求。本文描述了一种无源系统的无模型控制方法,该方法可应用于直流同步电机的速度控制。该方法适用于内部被动的系统。建立了互联系统无源性的条件。我们使用该策略来控制无刷直流电机的角速度。仿真和实验结果验证了理论结果的正确性,验证了算法的有效性。
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引用次数: 0
Mobility, COVID-19 cases and virus reproduction rate data analysis for Romania using Machine Learning Algorithms 使用机器学习算法分析罗马尼亚的流动性、COVID-19病例和病毒繁殖率数据
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931806
G. Ene, A. Bâra, S. Oprea, Costin Baroiu, Dragos-Catalin Barbu
This paper examines the effect of lockdown measures on population mobility during the COVID-19 pandemic in Romania. Many countries, including Romania, have adopted quarantine and isolation for infected people in attempting to stop the virus transmission and the rapid escalation of the number of cases, which has put great pressure on hospitals. These measures have slowed down the economy leading to the loss of jobs with a massive impact on people's psychology by increasing panic or anxiety. Mobility data is used as a measurement representation of social distancing and therefore, combining mobility data sets with COVID-19-related data might support the analysis between the virus effects and mobility and, correspondingly, the population mobility impact on virus transmission. It is undeniable that the imposed restrictions have influenced the business environment, our aim being to investigate the relationship between the number of COVID-19 cases, the virus reproduction rate, and the changes in mobility toward retail outlets and workplaces.
本文研究了罗马尼亚COVID-19大流行期间封锁措施对人口流动的影响。包括罗马尼亚在内的许多国家对受感染的人采取了检疫和隔离措施,试图阻止病毒的传播和病例数量的迅速增加,这给医院带来了巨大压力。这些措施减缓了经济,导致失业,增加了恐慌或焦虑,对人们的心理产生了巨大影响。流动性数据被用作社会距离的度量表示,因此,将流动性数据集与covid -19相关数据相结合可能支持分析病毒效应与流动性之间的关系,并相应地支持分析人口流动性对病毒传播的影响。不可否认的是,实施的限制影响了商业环境,我们的目的是调查COVID-19病例数、病毒繁殖率以及向零售店和工作场所流动的变化之间的关系。
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引用次数: 1
An Information System for Cardiological Data Studying 心脏病学数据研究的信息系统
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931819
G. Georgieva-Tsaneva
This paper presents a training information system for studying biomedical cardiological data. The software system examines cardiological data obtained in real conditions (electrocardiographic, photoplethysmographic, and Holter data). The interactive system is oriented toward upgrading the training of students in medicine and health care, providing an opportunity to create a preliminary experience for future medical professionals in working with different types of cardiological data. The use of photoplethysmographic and Holter data is discussed in more detail. The presented system provides an opportunity to conduct research and studies on the interaction between the heart and the functioning of the human organism. The article shows the results obtained in the analysis of cardiac data registered in healthy subjects and patients with cardiovascular disease. Graphical results (Spectrogram and Global Power Spectral Density) from the study of healthy subjects compared with the graphic results of subjects with arrhythmia are presented and discussed.
提出了一种用于研究生物医学心脏学数据的训练信息系统。软件系统检查在实际条件下获得的心脏学数据(心电图、光电容积图和动态心电图数据)。互动系统旨在提升学生在医学和卫生保健方面的培训,为未来的医疗专业人员提供处理不同类型心脏病数据的初步经验。更详细地讨论了光电容积脉搏图和霍尔特数据的使用。提出的系统提供了一个机会,进行研究和研究心脏和人体有机体的功能之间的相互作用。本文展示了对健康受试者和心血管疾病患者登记的心脏数据进行分析所得的结果。图示结果(频谱图和全局功率谱密度)从健康受试者的研究与心律失常受试者的图形结果进行了比较和讨论。
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引用次数: 1
End-to-End Single Image Super-Resolution Based on Convolutional Neural Networks 基于卷积神经网络的端到端单图像超分辨率
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931762
L. Ferariu, Iosif-Alin Beti
Single image super-resolution algorithms aim to increase the resolution of an input image without deteriorating its visual perception. With a strong ability to understand the structure of an image, convolutional neural networks (CNNs) are successfully applied to this problem. Previous studies have shown that human perception is mainly influenced by variations in luminance. In this regard, this paper introduces two CNNs that operate only on the luminance channel, at low computational costs. Each model provides an end-to-end mapping between a low-resolution (LR) and a high-resolution (HR) map. Because upsampling is integrated into CNN, the design allows the control of HR image quality. In addition, the neural architectures can be configured with many layers operating with small LR feature maps, to provide fast run-time image processing. The approach is exemplified in two cases: generate the HR map or a residual map for the luminance channel; the residual map should be added to the map upsampled by interpolation. Besides having improved time performance, the two models can produce HR images with high NIQE scores, as shown experimentally.
单图像超分辨率算法旨在提高输入图像的分辨率,而不损害其视觉感知。卷积神经网络(cnn)具有很强的理解图像结构的能力,成功地应用于这一问题。先前的研究表明,人类的感知主要受亮度变化的影响。在这方面,本文介绍了两种仅在亮度通道上运行的cnn,其计算成本较低。每个模型都提供低分辨率(LR)和高分辨率(HR)映射之间的端到端映射。由于上采样集成到CNN中,该设计允许对HR图像质量进行控制。此外,神经结构可以配置许多层,使用小型LR特征映射,以提供快速的运行时图像处理。该方法在两种情况下进行了举例说明:为亮度通道生成HR映射或残差映射;残差图应该添加到插值上采样的图中。实验结果表明,这两种模型在时间性能上都有提高,并且可以产生具有较高NIQE分数的HR图像。
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引用次数: 0
Marine Mine Detection Using Deep Learning 基于深度学习的海洋水雷探测
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931775
Moina Diana, Nicoleta Munteanu, D. Munteanu, D. Cristea
The paper addresses the detection of floating and underwater marine mines from images recorded from cameras (taken from drones, submarines, ships, boats). Due to the lack of image datasets, images were taken from the Internet and by using the technique of augmentation and synthetic image generation (by overlapping images with different types of mines over water backgrounds) 2 data sets were built (one for floating mines and one for underwater mines). The networks were trained and compared using 3 types of Deep Learning models Yolov5, SSD and EfficientDet (Yolov5, SSD for floating mines and Yolov5 and EfficientDet for underwater mines). The networks were also tested in the context of an IoT device (RaspberryPi 4, RPi camera).
该论文解决了从相机(从无人机,潜艇,船只,船只)记录的图像中检测浮动和水下水雷的问题。由于缺乏图像数据集,我们从互联网上获取图像,利用增强和合成图像生成技术(在水背景上叠加不同类型水雷的图像)构建了2个数据集(浮动水雷和水下水雷)。使用3种深度学习模型Yolov5、SSD和EfficientDet (Yolov5、SSD用于浮式水雷,Yolov5和EfficientDet用于水下水雷)对网络进行训练和比较。这些网络还在物联网设备(RaspberryPi 4, RPi相机)的背景下进行了测试。
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引用次数: 0
Sensitivity-Based Iterative State-Feedback Tuning for Nonlinear Systems 非线性系统基于灵敏度的迭代状态反馈整定
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931769
A. Wache, H. Aschemann
In this paper, a new approach to tuning and optimisation of controlled systems regarding the tracking behaviour is presented. This approach can be understood as an extension to the iterative feedback tuning (IFT) approach known from the literature. Motivated by the sensitivity concept, the IFT algorithm is extended to both linear and nonlinear systems in state-space description with static state-feedback control, resulting in the proposed iterative state-feedback tuning (ISFT) method. The main contribution consists of the derivation of a closed sensitivity function for quadratic cost functions, which is typical for control optimisation problems. The proposed approach results in a gradient-based iterative algorithm for control parameter adaptation. In the end, two exemplary simulation results will be presented for a linear and a nonlinear system, demonstrating the usability of this new approach and a slight improvement w.r.t. the classical IFT.
本文提出了一种针对被控系统的跟踪行为进行调谐和优化的新方法。这种方法可以理解为从文献中已知的迭代反馈调优(IFT)方法的扩展。在灵敏度概念的激励下,将IFT算法扩展到具有静态状态反馈控制的线性和非线性系统的状态空间描述,从而提出了迭代状态反馈调谐(ISFT)方法。主要贡献包括二次代价函数的封闭灵敏度函数的推导,这是典型的控制优化问题。提出了一种基于梯度的控制参数自适应迭代算法。最后,将给出线性和非线性系统的两个示例性仿真结果,以证明这种新方法的可用性以及对经典IFT的略微改进。
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引用次数: 2
UML to code, and code to UML, a view inside implementation challenges and cost UML到代码,代码到UML,实现内部的挑战和成本
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931871
Dumitru-Cristian Apostol, Paul-Daniel Rusovan, M. Marcu
Due to benefits such as cost savings and accuracy, automated translation of UML models to executable code is becoming more popular. However, important issues in this field include maintainability and efficiency of the produced code, as well as evaluating the consistency of UML models. This paper describes a mechanism for automatically translating UML models into code in a specific programming language. For automatic code creation, the program UML to Code employs UML class diagrams for structural reference. The program creates code structure based on the class diagram, having as backbone, a state machine that converts the XML into code. The code generating tool is experimentally validated using a case study. The resulting code is compatible with UML models, functional, efficient and intelligible, according to the results.
由于成本节约和准确性等优点,UML模型到可执行代码的自动翻译正变得越来越流行。然而,该领域的重要问题包括所生成代码的可维护性和效率,以及UML模型的一致性评估。本文描述了一种自动将UML模型转换为特定编程语言代码的机制。对于自动代码创建,程序UML to code使用UML类图作为结构参考。该程序基于类图创建代码结构,并以将XML转换为代码的状态机作为主干。该代码生成工具通过案例研究进行了实验验证。根据结果,生成的代码与UML模型兼容,功能齐全,高效且易于理解。
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引用次数: 0
Digital Twin for a Mechatronics Line with Integrated Mobile Robotic Systems 集成移动机器人系统的机电一体化生产线的数字孪生
Pub Date : 2022-10-19 DOI: 10.1109/ICSTCC55426.2022.9931782
A. Filipescu, D. Cernega, E. Minca, R. Șolea, D. Ionescu, Georgian Simion, A. Filipescu
The paper presents digital twin multi-functional technology for flexible production on an assembly, disassembly and repair (A/D/RML) mechatronics line assisted by a complex autonomous system (CAS). The real world consists of A/D/RML a mechatronic line (ML) with six workstations (WS) connected to a flexible cell (FC) equipped with an industrial robotic manipulator (IRM). The multifunctionality of the system is given by the three actions, assembly, disassembly and repair (the flexibility is due to the assembly of different types of products). After disassembly or repair, CAS picks up and transports the disassembled components to the appropriate storage positions for reuse. The technology works synchronously with signals from various sensors and a mobile visual servo system (VSS eye-in-hand). The virtual representation serving as a digital counterpart consists of task assignment, scheduling and A/D/RML synchronisation with integrated robotic systems. The virtual world also includes hybrid modeling and simulation with synchronized hybrid Petri nets (SHPN), VSS eye-in-hand modeling and implementation, simulation in MobileSim and graphical user interface (GUI) for real-time control monitoring, so that the whole system becomes fully automated.
本文提出了在复杂自主系统(CAS)辅助下,实现装配线、拆修线(A/D/RML)柔性生产的数字孪生多功能技术。现实世界由A/D/RML组成,一条机电一体化线(ML)与六个工作站(WS)连接到一个柔性单元(FC),配备一个工业机器人机械手(IRM)。该系统的多功能性是由装配、拆卸和维修三个动作赋予的(灵活性是由于装配不同类型的产品)。在拆卸或修理后,CAS将拆卸的部件收集并运送到适当的存储位置以供重复使用。该技术与来自各种传感器和移动视觉伺服系统(VSS眼在手)的信号同步工作。作为数字对应物的虚拟表示由任务分配、调度和与集成机器人系统的a /D/RML同步组成。虚拟世界还包括混合建模和仿真与同步混合Petri网(SHPN), VSS眼在手建模和实现,仿真在MobileSim和图形用户界面(GUI)的实时控制监控,使整个系统变得完全自动化。
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引用次数: 0
期刊
2022 26th International Conference on System Theory, Control and Computing (ICSTCC)
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