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2022 8th International Conference on Control, Decision and Information Technologies (CoDIT)最新文献

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Improved 2D laser slam graph optimization based on Cholesky decomposition 基于Cholesky分解的改进二维激光冲击图优化
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9803938
Liangliang Gao, Chaoyi Dong, Xiaoyang Liu, Qifan Ye, Kang Zhang, Xiaoyan Chen
Laser slam usually needs to complete a back-end graph optimization at a fast speed in some specific scenes, such as sharp turns, fast motion, and limited calculation time. Aiming at these problems, this paper proposed a 2D laser slam back-end graph optimization combined with Cholesky decomposition to accelerate a linear solution process and further to achieve a purpose of accelerating graph optimization. In MATLAB simulation experiments, the rate of 2D laser slam back-end graph optimization combined with Cholesky decomposition increased 24%, compared to that of the traditional method without Cholesky decomposition. The result verified the effectiveness of the improved method.
在急转弯、快速运动、计算时间有限等特定场景中,激光slam通常需要以较快的速度完成后端图形优化。针对这些问题,本文提出了一种结合Cholesky分解的二维激光slam后端图优化方法来加速线性求解过程,从而达到加速图优化的目的。在MATLAB仿真实验中,与不进行Cholesky分解的传统方法相比,结合Cholesky分解的二维激光slam后端图优化率提高了24%。实验结果验证了改进方法的有效性。
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引用次数: 1
The influence of the battery technology choice on motor optimisation for electric vehicles 电池技术选择对电动汽车电机优化的影响
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804068
A. Meddour, N. Rizoug, A. Babin, C. Vagg, R. Burke
This paper investigates the impact of battery technology on the electric motor's optimization process for an electric vehicle application. Matlab and Ansys Electronics are used to conduct the simulations. The needed autonomy is estimated for the WLTC driving cycle using a dynamic vehicle model while considering the storage system mass calculated with a connected sizing algorithm. The Motor model is constructed using the finite element soft-ware Ansys electronics. The genetic algorithm will determine its geometrical parameters while considering the new power and torque demands, including the storage system weight. The comparison of the optimization results was carried out for four battery technologies that have promising characteristics for an automotive application. The results discussed active material cost and performances evaluated for the entire selected driving cycle.
本文研究了电池技术对电动汽车电机优化过程的影响。利用Matlab和Ansys Electronics进行仿真。在考虑存储系统质量的情况下,采用连接分级算法估计WLTC行驶周期所需的自主性。利用有限元软件Ansys electronics建立了电机模型。遗传算法将确定其几何参数,同时考虑新的功率和扭矩需求,包括存储系统重量。对四种具有较好汽车应用前景的电池工艺进行了优化比较。结果讨论了整个选定驾驶周期的活性材料成本和性能评估。
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引用次数: 0
Reinforcement Learning for assistance of Alzheimer's disease patients 强化学习对老年痴呆症患者的帮助
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804114
Wafa Ben Taleb, Ahmed Snoun, T. Bouchrika, O. Jemai
Alzheimer's disease is a chronic brain disease with multi-factorial causes that begins in the middle of life. It affects the patient in many ways, like the ability to perform daily life activities. In this paper, we proposed an assistance system for Alzheimer's patients to assist them in performing their activities of daily living autonomously. The developed system is based on a human activity recognition system and a prompt system to provide alerts to the patient in case of need. To detect the anomalies in the patient's behavior and provide assistance, we used a reinforcement learning (RL) module as a decision-making system. This module may be responsible for identifying and prompting the patient's wanted assistance based on his or her behavior. The efficiency of the proposed system was proven after testing using the Dem Care dataset.
阿尔茨海默病是一种慢性脑部疾病,由多因素引起,始于中年。它会在很多方面影响患者,比如日常生活活动的能力。在本文中,我们提出了一种老年痴呆症患者辅助系统,以帮助他们自主地进行日常生活活动。开发的系统基于人类活动识别系统和提示系统,以便在需要时向患者提供警报。为了检测患者行为中的异常并提供帮助,我们使用强化学习(RL)模块作为决策系统。该模块可能负责根据患者的行为识别并提示其所需的帮助。通过Dem Care数据集的测试,证明了该系统的有效性。
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引用次数: 2
Parameter Estimation and Indirect Adaptive Control of a Robot Arm* 机械臂参数估计与间接自适应控制*
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804061
Andrei Zhivitskii, O. Borisov, I. Dovgopolik
The problem addressed in the paper is twofold. First, the estimation of unknown robot parameters is carried out using three different approaches, namely the gradient descent method, extended Kalman filter, and dynamic regressor extension and mixing, to evaluate their performance as applied to the two-link planar elbow robot arm. Second, an indirect adaptive inverse dynamics controller based on the obtained estimates is designed to study performance achieved by the estimation methods in the control problem. The obtained results show advantages of the dynamic regressor extension and mixing in the both addressed problems.
这篇论文讨论的问题是双重的。首先,采用梯度下降法、扩展卡尔曼滤波和动态回归扩展混合三种不同的方法对未知机器人参数进行估计,并评估它们在两连杆平面肘形机械臂上的性能。其次,基于得到的估计设计了一个间接自适应逆动力学控制器,研究了估计方法在控制问题中的性能。得到的结果表明,动态回归量扩展和混合方法在这两个问题中都具有优势。
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引用次数: 2
Surface Defect Detection and Recognition Based on CNN 基于CNN的表面缺陷检测与识别
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9803911
Oleg Evstafev, Sergey V. Shavetov
The design and development of surface defect detection and recognition systems for optical non-destructive testing (NDT) tasks is a complex, important and pressing problem today. Detection and classification of surface defects using Computer Vision (CV) and Machine Learning (ML) algorithms serves as an effective tool for production process control, quality management and increasing the profitability of enterprises. In this paper, Deep Learning (DL) and Computer Vision (CV) techniques are used to solve the problem of surface defect detection. Using Convolutional Neural Network (CNN), detection and recognition of various defects is carried out to improve production standards and process efficiency. The outcome of this paper is a comparative analysis of DL models and the selection of an algorithm designed to find and classify defects online. The application of such CNN models could allow the creation of a tool that considerably facilitates human work.
设计和开发用于光学无损检测(NDT)任务的表面缺陷检测和识别系统是当今一个复杂、重要和紧迫的问题。利用计算机视觉(CV)和机器学习(ML)算法对表面缺陷进行检测和分类,是生产过程控制、质量管理和提高企业盈利能力的有效工具。本文采用深度学习(DL)和计算机视觉(CV)技术来解决表面缺陷检测问题。利用卷积神经网络(CNN)对各种缺陷进行检测和识别,以提高生产标准和工艺效率。本文的结果是对深度学习模型进行了比较分析,并选择了一种用于在线发现和分类缺陷的算法。这种CNN模型的应用可以创建一种工具,大大方便了人类的工作。
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引用次数: 1
The Labeled Two Edge Connected Subgraph Problem 标记的两条边连通子图问题
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9803882
Mariem Ben Salem, Raouia Taktak
In this paper, we address a variant of the Two Edge Connected Problem (TECP), that is the TECP with color constraint on the edges, also known as the Labeled Two Edge Connected Problem (LTECP). Given a connected undirected graph $G$ whose edges are labeled (or colored), the LTECP consists in finding a two-edge connected spanning subgraph of $G$ with a minimum number of distinct labels (or colors). We distinguish two variants of the problem: the first one is when each edge is associated with exactly one label (i.e., the LTECP), and the second is when each edge may be associated with more than one label. This variant is called the Generalized Labeled Two Edge Connected Problem (i.e., the GLTECP). Both problems are relevant in some application fields such as telecommunication networks or transportation networks. We propose Integer Linear Programming formulations for the two variants, we identify a new class of valid inequalities, and present preliminary computational results.
在本文中,我们解决了两个边缘连接问题(TECP)的一个变体,即边缘上有颜色约束的TECP,也称为标记的两个边缘连接问题(LTECP)。给定一个连通无向图$G$,其边被标记(或着色),LTECP包括找到$G$具有最小数量的不同标记(或颜色)的两边连通生成子图。我们区分了问题的两个变体:第一个是当每条边与一个标签(即LTECP)相关联时,第二个是当每条边可能与多个标签相关联时。这种变体称为广义标记两边连通问题(即GLTECP)。这两个问题都与电信网或交通网等应用领域有关。我们提出了这两个变量的整数线性规划公式,我们识别了一类新的有效不等式,并给出了初步的计算结果。
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引用次数: 0
Optimizing the charging stations allocation for efficient electric vehicles routing 优化充电站配置,实现电动汽车高效行驶
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9803974
Chaima Taieb, Takwa Tlili, I. Nouaouri, S. Krichen
In this paper, we present a charging station allocation model for electric vehicles. The goal is to assign each electric vehicle to the closest charging station with respect to capacity and charging time constraints. We assume that each vehicle's arrival time is provided by a GPS device and each charging station capacity as well as the required charging time are known in advance. We propose an integer programming model solved with CPLEX to efficiently deal with this combinatorial problem. The objective of Electric Vehicles Charging Stations Allocation (EVCSA) is to minimize the total required time from a start point to a destination going through a Charging Station (CS). To evaluate the performance of the proposed approach, computational experiments are conducted on large scale randomly generated instances simulating a real world scenario.
本文提出了一种电动汽车充电站配置模型。目标是根据容量和充电时间的限制,将每辆电动汽车分配到最近的充电站。我们假设每辆车的到达时间都是由GPS设备提供的,并且每个充电站的容量和所需的充电时间都是已知的。为了有效地处理这一组合问题,我们提出了一个用CPLEX求解的整数规划模型。电动汽车充电站分配(EVCSA)的目标是使从起点到目的地经过充电站所需的总时间最小。为了评估所提出的方法的性能,在模拟真实世界场景的大规模随机生成实例上进行了计算实验。
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引用次数: 0
CPM Remote: A Remote Access to the CPM Lab CPM远程:远程访问CPM实验室
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804088
Armin Mokhtarian, Bassam Alrifaee
Laboratories with model vehicles offer a middle ground between field tests and simulations. Thereby, the lab-oratories benefit from the advantages of more realistic setups and reduce acquisition and maintenance costs. However, the efficient use of a fixed laboratory presents further organizational hurdles. In addition, special hardware requirements, complex installation processes, and the cost and length of travel to the laboratories discourage users from getting involved. In this paper, we present the web app CPM Remote, which addresses these hurdles. The Cyber-Physical Mobility (CPM) Lab is an open source platform for networked and autonomous vehicles. Our online framework www.cpm-remote.de. provides a simulation environment and remote access to our CPM Lab (based in Aachen, Germany), making it accessible from anywhere in the world. The simulation environment is outsourced to our servers, reducing the hardware and software requirements of the users. CPM Remote aims to offer a user-friendly platform for making solutions to current research questions more transparent since results can be reproduced and extended quickly with little effort.
拥有模型车辆的实验室提供了介于现场测试和模拟之间的中间地带。因此,实验室受益于更现实的设置优势,并减少购置和维护成本。然而,一个固定的实验室的有效利用提出了进一步的组织障碍。此外,特殊的硬件要求、复杂的安装过程,以及前往实验室的费用和路程,都阻碍了用户参与其中。在本文中,我们提出了解决这些障碍的web应用程序CPM Remote。网络物理移动(CPM)实验室是一个面向联网和自动驾驶汽车的开源平台。我们的在线框架www.cpm-remote.de。提供了一个模拟环境和远程访问我们的CPM实验室(总部设在亚琛,德国),使其从世界任何地方访问。仿真环境外包给我们的服务器,减少了用户对硬件和软件的需求。CPM Remote旨在提供一个用户友好的平台,使当前研究问题的解决方案更加透明,因为结果可以毫不费力地快速复制和扩展。
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引用次数: 3
Parkinson's Disease Gait Evaluation Leveraging Wearable Insoles and Deep Learning Approach* 基于可穿戴鞋垫和深度学习方法的帕金森病步态评估*
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804064
Asma Channa, N. Popescu, Muhammad Faisal
Gait evaluation is important for apprehension and management of different neurocognitive disorders (NCD). The gait events are changing with the age factor and this variability is being incorrectly linked with people with NCD. So, there is a high need to analyze gait events correctly. The gait analysis is mostly performed on temporal and spectral feature extraction in which there is a high rate of missing important features. Apart from this, monitoring and quantification of Parkinson's disease patients raise many therapeutic challenges in terms of severity analysis of motor symptoms i.e. freezing of gait (FOG), bradykinesia and continuous remote monitoring of patients. The objective of this study is to use a smart insole dataset for the assessment of computational techniques focusing on gait evaluation. The objective of this research study is to use continuous wavelet transform to convert time series signals into an images instead of using more traditional techniques for dealing with time series based on e.g. recurrent architectures. The results evidence that the proposed system works efficiently with the accuracy of 96.5% in gait variability analyzing three cohorts i.e. adults, elderly, and patients with Parkinson's disease (PwPD) and 91% for analyzing the gait symptoms in different severity stages of PD patients.
步态评估对不同神经认知障碍(NCD)的理解和治疗具有重要意义。步态事件随着年龄因素而变化,这种可变性被错误地与非传染性疾病患者联系在一起。因此,正确分析步态事件是非常必要的。步态分析主要是在时间和光谱特征提取上进行的,其中重要特征的缺失率很高。除此之外,帕金森病患者的监测和量化在运动症状的严重程度分析方面提出了许多治疗挑战,例如步态冻结(FOG),运动迟缓和患者的连续远程监测。本研究的目的是使用智能鞋垫数据集来评估专注于步态评估的计算技术。本研究的目的是利用连续小波变换将时间序列信号转换成图像,而不是使用传统的基于循环结构的时间序列处理技术。结果表明,该系统在分析成人、老年人和帕金森病患者(PwPD)三个队列时的步态变异性准确率为96.5%,在分析帕金森病患者不同严重程度阶段的步态症状时准确率为91%。
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引用次数: 0
Plant Leaf Classification Using Convolutional Neural Network 基于卷积神经网络的植物叶片分类
Pub Date : 2022-05-17 DOI: 10.1109/CoDIT55151.2022.9804121
N. A. Othman, N. S. Damanhuri, Nabilah Md Ali, Belinda Chong Chiew Meng, A. Samat
Plant classification systems, in general, could be a beneficial tool in the agricultural industry, especially when it comes to recognising plant types in a systematic and manageable manner. Previously, plant growers used to rely on observation and experienced personnel to distinguish between plant varieties. However, some plants, such as leaves and branches, have nearly identical traits, making identification difficult. Hence, there is a need for a system capable of resolving this issue. Thus, the focus of this research is on classifying plant leaves using a convolutional neural network (CNN) technique. Coriander and parsley were chosen as test subjects for this study because their leaves have comparable structures. The input image was subjected to a number of filter layers using CNN. A total of 100 coriander and parsley leaf photos are collected for this research. These photos were filtered using kernels. These kernels have a set size and extract features from the input photos to create a feature map. These extracted features will then be used to classify plant leaves according to its classes type. With the use of the Graphical User Interface (GUI), the end user will be able to determine the type of leaf. Results show that, using the ReLu activation layer with 15 layers of network design and a 70–30 training-testing proportion, this plant leaf classification system was able to attain a coriander and parsley classification accuracy of 90% with an error rate of 0.1. In addition, due to its great accuracy, this system can be extended for additional uses such as recognising plant diseases and species.
总的来说,植物分类系统在农业中可能是一个有益的工具,特别是在以系统和可管理的方式识别植物类型方面。以前,植物种植者依靠观察和有经验的人员来区分植物品种。然而,一些植物,如叶子和树枝,有几乎相同的特征,使鉴定困难。因此,需要一个能够解决这个问题的系统。因此,本研究的重点是利用卷积神经网络(CNN)技术对植物叶片进行分类。之所以选择香菜和欧芹作为这项研究的测试对象,是因为它们的叶子具有相似的结构。使用CNN对输入图像进行多次滤波。本研究共收集香菜和欧芹叶片照片100张。这些照片是用滤芯过滤的。这些内核有一个固定的大小,并从输入照片中提取特征以创建特征映射。然后,这些提取的特征将用于根据植物叶子的类类型对其进行分类。通过使用图形用户界面(GUI),最终用户将能够确定叶子的类型。结果表明,采用15层网络设计的ReLu激活层和70-30的训练测试比例,该植物叶片分类系统的香菜和欧芹分类准确率达到90%,错误率为0.1。此外,由于其极高的准确性,该系统可以扩展到其他用途,例如识别植物疾病和物种。
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引用次数: 0
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2022 8th International Conference on Control, Decision and Information Technologies (CoDIT)
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