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2022 5th International Conference on Advanced Systems and Emergent Technologies (IC_ASET)最新文献

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Classification of sEMG Biomedical Signals for Upper-Limb Rehabilitation Using the Random Forest Method 基于随机森林方法的上肢康复表面肌电信号生物医学信号分类
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765871
Sami Briouza, H. Gritli, N. Khraief, S. Belghith, Dilbag Singh
To use surface electromyography (sEMG) signals for therapy and rehabilitation purposes, we first need to tackle a fundamental problem which is the pattern recognition of these signals. Recently, Machine Learning (ML) techniques have drawn a lot of attention from researchers working on sEMG pattern recognition, and the usage of these techniques showed a lot of potentials and proved to be a viable option. For this work, we adopt the random forest classifier, as an ML technique, for the classification of the sEMG signals for the rehabilitation of upper limbs. Furthermore, to be able to test its performance, we considered and tested different combinations of five different time-domain features, namely MAV, WL, ZC, SSC, and finally RMS. Thus, and via experimental results on the adopted dataset, we show how the choice of features influences the quality of classification.
为了将表面肌电信号用于治疗和康复目的,我们首先需要解决一个基本问题,即这些信号的模式识别。最近,机器学习(ML)技术引起了肌电信号模式识别研究人员的广泛关注,这些技术的使用显示出很大的潜力,并被证明是一种可行的选择。在这项工作中,我们采用随机森林分类器作为一种机器学习技术,对上肢康复的表面肌电信号进行分类。此外,为了测试其性能,我们考虑并测试了五种不同时域特征的不同组合,即MAV, WL, ZC, SSC,最后是RMS。因此,通过对所采用数据集的实验结果,我们展示了特征的选择如何影响分类质量。
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引用次数: 5
Non-Parallel Voice Conversion System Using An Auto-Regressive Model 基于自回归模型的非并行语音转换系统
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765886
Kadria Ezzine, M. Frikha, J. Di Martino
Much existing voice conversion (VC) systems are attractive owing to their high performance in terms of voice quality and speaker similarity. Nevertheless, without parallel training data, some generated waveform trajectories are not yet smooth, leading to degraded sound quality and mispronunciation issues in the converted speech. To address these shortcomings, this paper proposes a non-parallel VC system based on an auto-regressive model, Phonetic PosteriorGrams (PPGs), and an LPCnet vocoder to generate high-quality converted speech. The proposed auto-regressive structure makes our system able to produce the next step outputs from the previous step acoustic features. Further, the use of PPGs aims to convert any unknown source speaker into a specific target speaker due to their speaker-independent properties. We evaluate the effectiveness of our system by performing any-to-one conversion pairs between native English speakers. Objective and subjective measures show that our method outperforms the best non-parallel VC method of Voice Conversion Challenge 2018 in terms of naturalness and speaker similarity.
许多现有的语音转换系统由于其在语音质量和说话者相似度方面的高性能而具有吸引力。然而,在没有并行训练数据的情况下,一些生成的波形轨迹还不光滑,导致转换后的语音出现音质下降和发音错误的问题。为了解决这些缺点,本文提出了一种基于自回归模型、语音后置图(PPGs)和LPCnet声码器的非并行VC系统,以生成高质量的转换语音。所提出的自回归结构使我们的系统能够从前一步声学特征中产生下一步输出。此外,使用ppg的目的是将任何未知的源说话者转换为特定的目标说话者,因为它们与说话者无关。我们通过在英语母语者之间进行任意对一的转换对来评估我们系统的有效性。客观和主观测量表明,我们的方法在自然度和说话人相似度方面优于2018年语音转换挑战赛的最佳非并行VC方法。
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引用次数: 0
Emotional and cognitive dissonance revealed using VEMOS emotion analysis system 使用VEMOS情绪分析系统揭示情绪和认知失调
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765892
Nadia Jmour, S. Masmoudi, A. Abdelkrim
Artificial intelligence is used in different fields. This paper describes a new opportunity to connect artificial intelligence to cognitive social psychology. We touch two important psychology paradigms: emotional and cognitive dissonance. Our hypotheses are proved using the new video based emotions analysis system (VEMOS) by testing labeled videos samples filmed by an actor according to specific scenarios and situations proposed by an expert on cognitive psychology describing the two paradigms. First, our approach has shown relevant results that confirm the notion of emotional and cognitive dissonance and the reliability of the intelligent system VEMOS on recognizing emotions efficiently. Then, we successfully add a new method of measuring a score of the individual emotional dissonance as well as his degree of spontaneity and degree of control.
人工智能应用于不同的领域。本文描述了将人工智能与认知社会心理学联系起来的新机会。我们触及两个重要的心理学范式:情绪失调和认知失调。我们的假设是使用新的基于视频的情绪分析系统(VEMOS),根据认知心理学专家提出的描述这两种范式的具体场景和情境,通过测试演员拍摄的标记视频样本来证明的。首先,我们的方法显示了相关的结果,证实了情绪和认知失调的概念,以及智能系统VEMOS在有效识别情绪方面的可靠性。然后,我们成功地增加了一种新的方法来测量个人情绪失调的得分以及他的自发性程度和控制程度。
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引用次数: 0
Mechanical Design and Control of an Arm with Two Degrees of Freedom for Inspection and Cleaning Operations 用于检测和清洗操作的二自由度机械臂的机械设计与控制
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765933
C. Zaoui, Helmi Abrougui, Mohamed Amine Meftah, Saber Hachicha, Ahmed Moulhi, Habib Dallagi
This paper deals with the modeling and control of an autonomous arm with two degrees of freedom. The arm mechanical design was firstly proposed and described. It is designed for ship inspection and cleaning operations. The proposed control technique was developed using sliding mode control combined with feedback linearization approach. Simulation results were carried out to show the effectiveness of the proposed control law.
本文研究了二自由度自主机械臂的建模与控制问题。首先提出并描述了机械手的机械设计。它是为船舶检查和清洁操作而设计的。采用滑模控制与反馈线性化相结合的控制方法。仿真结果表明了所提控制律的有效性。
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引用次数: 0
Unipolar SHEPWM for Pure Sine Wave Single-Phase Inverter 单极SHEPWM纯正弦波单相逆变器
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765879
Aymen Chaaira, Rabiaa Gamoudi, L. Sbita
Modern power systems, such as DC-AC inverters, have improved in efficiency. They employ simple control methods. During the switching process, however, they cause harmonic difficulties. This has an effect on the overall system's performances. To reduce these undesired harmonic distortions, unipolar Selective Harmonic Elimination SHEPWM was used in this work. At optimal switching angles, it cancels out odd harmonics. Its goal is to get rid of the first 100 low-order harmonics. By solving non-linear transcendental equations in MATLAB, the fsolve function was utilized to calculate the optimal 50 angles for the SHEPWM. The resulting SHEPWM control signal is implemented in LTspice. It operates a single-phase pure sine wave inverter. Finally, at the inverter output, an LC low-pass filter is used to improve the response and obtain a better sinusoidal AC waveform with lower THD.
现代电力系统,如直流-交流逆变器,已经提高了效率。他们采用简单的控制方法。然而,在开关过程中,它们会引起谐波问题。这对整个系统的性能有影响。为了减少这些不希望的谐波失真,在这项工作中使用了单极选择性谐波消除SHEPWM。在最佳的开关角度,它抵消了奇谐波。它的目标是去掉前100个低次谐波。通过在MATLAB中求解非线性超越方程,利用fsolve函数计算出SHEPWM的最佳50个角度。得到的SHEPWM控制信号在LTspice中实现。它操作一个单相纯正弦波逆变器。最后,在逆变器输出端,采用LC低通滤波器提高响应,得到较低THD下较好的正弦交流波形。
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引用次数: 0
Deep Neural Network for visual Emotion Recognition based on ResNet50 using Song-Speech characteristics 基于ResNet50的基于歌曲-语音特征的深度神经网络视觉情感识别
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765898
Souha Ayadi, Z. Lachiri
Visual emotion recognition is a very large field. It plays a very important role in different domains such as security, robotics, and medical tasks. The visual tasks could be either image or video. Unlike the image processing, the difficulty of video processing is always a challenge due to changes in information over time variation. Significant performance improvements when applying deep learning algorithms to video processing. This paper presents a deep neural network based on ResNet50 model. The latter is conducted on the Ryerson Audio-Visual Database of Emotional Speech and Song (RAVDESS) due to the variance of the nature of the data exists which is speech and song. The choice of ResNet model is based on the ability of facing different problems such as of vanishing gradients, the performing stability offered by this model, the ability of CNN for feature extraction which is considered to be the base architecture for ResNet, and the ability of improving the accuracy results and minimizing the loss. The achieved results are 57.73% for song and 55.52% for speech. Results shows that the Resnet50 model is suitable for both speech and song while maintaining performance stability.
视觉情感识别是一个非常大的领域。它在安全、机器人和医疗任务等不同领域发挥着非常重要的作用。视觉任务可以是图像或视频。与图像处理不同,由于信息随时间的变化而变化,视频处理的难度始终是一个挑战。将深度学习算法应用于视频处理时,显著提高了性能。本文提出了一种基于ResNet50模型的深度神经网络。后者是在瑞尔森情感言语与歌曲视听数据库(RAVDESS)上进行的,因为数据存在言语与歌曲性质的差异。ResNet模型的选择是基于面对梯度消失等不同问题的能力,该模型提供的性能稳定性,CNN的特征提取能力(被认为是ResNet的基础架构),以及提高精度结果和最小化损失的能力。实现的结果为歌曲57.73%,语音55.52%。结果表明,Resnet50模型在保持性能稳定性的情况下,既适合语音又适合歌曲。
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引用次数: 3
Modelling of an Intelligent Control Strategy for an Autonomous Sailboat - SenSailor 自主帆船智能控制策略建模-传感器
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765928
Arom Moreno-Ortiz, Daniela Sánchez-Orozco, Luis López-Estrada, C. Tutivén, Y. Vidal, Marcelo Fajardo-Pruna
This paper studies the mathematical model required to implement an intelligent control system for the autonomous sailboat SenSailor Drone. This work presents the required equations and defines the hardware configuration and interactions between sensors and actuators in the system to be mounted. The proposed model was developed in Python, and it is feasible to interact with open source tools of machine learning. The generated trajectories will be used as input trajectories to train a Neural Network that identifies a plant model and gives an optimal controller for the desired behaviors.
研究了实现自主帆船传感器无人机智能控制系统所需的数学模型。这项工作提出了所需的方程,并定义了硬件配置以及待安装系统中传感器和执行器之间的相互作用。提出的模型是用Python开发的,并且可以与开源的机器学习工具进行交互。生成的轨迹将用作输入轨迹来训练神经网络,该神经网络识别植物模型并给出期望行为的最优控制器。
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引用次数: 0
Design of Continuous-Time ΣΔ-modulator With Single-Bit Quantizer With Hysteresis Operating at Limit Cycle 限环滞滞的连续时间单比特量化器ΣΔ-modulator的设计
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765931
Boncho Nikov
This paper presents a novel design methodology of a Continuous-time ΣΔ-Modulator operating at a limit cycle. The methodology employs both the describing functions linearization method and the out-of-band gain theory to find the parameters of the loop filter. As a result of the unification a single mathematical description of the loop requirements is obtained as a system of inequalities. Each of the solutions of the inequalities represents a possible modulator. An example is provided to demonstrate the design process.
本文提出了一种新的极限环连续时间系统ΣΔ-Modulator的设计方法。该方法采用描述函数线性化法和带外增益理论来确定环路滤波器的参数。作为统一的结果,环路要求的单一数学描述作为一个不等式系统得到。不等式的每个解表示一个可能的调制器。给出了一个示例来演示设计过程。
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引用次数: 0
A comparative analysis of techniques for extracting features from the object in image processing 图像处理中物体特征提取技术的比较分析
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765905
Touka Hafsia, H. Tlijani, K. Nouri
Visual informations is very rich to control and pursue mobile robots, like wheeled mobile robots, underwater robots and aerospace mobile robots, etc. These are considered as mobile robots that move in different spaces, their main problem in this case is navigation especially in unknown environments. In effect, this navigation is possible only by the localisation and orientation of the robot by using different embedded sensors. We have the camera which is a necessary sensor in this work, it is an embedded instrument that gives very rich visual information as a sensor complementing the other sensors. In this context, the recognition of objects from visual informations is a main function among the functions very useful in image processing tasks due to its varied applications in the field of robotics. Based on the analysis of this informations and the determination of image features like color or shape or object primitives (points, lines, edges, etc.) or some other features. What interest us in this paper, various feature extraction techniques and classification of point and edge detection are discussed which are required for object recognition showing advantages and disadvantages of the selected algorithms. So, points and edge detection refers to the process of identifying and detecting sharp discontinuities in an image. In this work, we try to develop a novel algorithm using the work on the existing to create a novel detector.
对于轮式移动机器人、水下移动机器人和航空航天移动机器人等移动机器人的控制和跟踪来说,视觉信息是非常丰富的。这些被认为是在不同空间移动的移动机器人,它们在这种情况下的主要问题是导航,特别是在未知环境中。实际上,这种导航只能通过使用不同的嵌入式传感器来定位和定位机器人。我们有相机,这是一个必要的传感器在这项工作中,它是一个嵌入式仪器,提供非常丰富的视觉信息,作为一个传感器补充其他传感器。在这种情况下,从视觉信息中识别物体是图像处理任务中非常有用的功能之一,因为它在机器人领域的应用非常广泛。基于对这些信息的分析和图像特征的确定,如颜色或形状或物体原语(点、线、边等)或其他一些特征。本文讨论了目标识别所需的各种特征提取技术和点边缘检测分类,并展示了所选算法的优缺点。因此,点边缘检测是指对图像中明显的不连续点进行识别和检测的过程。在这项工作中,我们试图开发一种新的算法,利用现有的工作来创建一个新的检测器。
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引用次数: 1
An Optimal Power Control Strategy For A Plug In Electric Vehicle Based On Online Multi-Objective Particle Swarm Optimization 基于在线多目标粒子群优化的插电式电动汽车最优功率控制策略
Pub Date : 2022-03-22 DOI: 10.1109/IC_ASET53395.2022.9765949
M. Rekik, Marwa Grami, L. Krichen
The developed work in this paper focuses on the optimal integration of rechargeable electric vehicles into the smart grid. Indeed, an optimization control is proposed to improve the dynamics and the response of these vehicles by adjusting all the parameters of their regulators during participation in the both concepts: vehicles to grid and grid to vehicles. The suggested approach is performed using the Online multi-objective Particle-Swarm-Optimization (PSO) algorithm. Simulation results obtained by "Matlab Simulink" will be presented to show the feasibility of this studied approach.
本文主要研究可充电电动汽车与智能电网的优化集成问题。实际上,在车辆到电网和电网到车辆这两个概念中,提出了一种优化控制方法,通过调整其调节器的所有参数来改善这些车辆的动力学和响应。该方法采用在线多目标粒子群优化(PSO)算法。通过Matlab Simulink仿真得到的结果表明了所研究方法的可行性。
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引用次数: 0
期刊
2022 5th International Conference on Advanced Systems and Emergent Technologies (IC_ASET)
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