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2019 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE)最新文献

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Identification of joints and their positions 识别关节及其位置
A. Ortega-Gonzalez, U. Robles-Cervantes, I.N. Espiritu-Lopez, M. Ibarra-Manzano
This article presents the implementation of an algorithm for the classification of flexion angles in the joints. The proposed algorithm statistical models the data coming from a fiber sensor to detect flexion in a join. The system filters, models and classifies the signals of a fiber sensor, in addition to comparing the results of the classification for different joints.
本文介绍了一种用于关节屈曲角度分类的算法的实现。该算法对来自光纤传感器的数据进行统计建模,以检测连接处的弯曲。该系统对光纤传感器的信号进行滤波、建模和分类,并对不同关节的分类结果进行比较。
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引用次数: 0
A novel electrothermal compliance microgripper 一种新型电热顺应微夹持器
P. Vargas-Chable, C. A. Ferrara-Bello, J. O. Sandoval-Reyes, M. Tecpoyotl-Torres, J. Varona
In this paper, a novel microgripper based on two perpendicular arrangements of beams and a chevron actuator is shown. In each perpendicular arrangement, the constrained displacement of the double clamped beams, joined at their endpoint, produces a buckling in each beam, which favors the displacement of each arm of the microgripper, normally open. These arrangements constitute the highly flexible structures of the microgripper. Their buckling is produced by the force applied by chevron arrow, producing a reaction force in the range of 174.44 $mu$ N in the microgripper jaws. Chevron actuator is fed by a thermal source. Temperature in microgripper tips is of 34.42°C and the operation frequency is 33.966 kHz, at maximum load thermal applied of 200°C. The mechanical, thermal and modal analyses of this integrated structure was supported by SIMSOLIDTM, based on Finite Element Analysis. The simulation was developed with Polysilicon as structural material.
本文提出了一种基于两根垂直梁和一个v形驱动器的新型微夹持器。在每个垂直排列中,在其端点连接的双夹紧梁的约束位移在每个梁中产生屈曲,这有利于微夹持器的每个臂的位移,通常是打开的。这些安排构成了微夹持器的高度柔性结构。它们的屈曲是由v形箭头施加的力产生的,在微夹持钳爪中产生的反作用力在174.44 $mu$ N范围内。雪佛龙执行机构是由一个热源。微夹持器尖端温度为34.42°C,工作频率为33.966 kHz,最大负载温度为200°C。采用基于有限元分析的SIMSOLIDTM软件对整体结构进行力学、热、模态分析。以多晶硅为结构材料进行仿真。
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引用次数: 3
NoC Performance Estimation Based on Queueing Theory for Real Scientific Applications 基于排队理论的NoC性能评估在实际科学应用中的应用
Carlos A. Piedrahita-Velásquez, Gustavo Patiño, Juan Pablo Urrea Duque
The estimation of performance metrics of a Network-on-Chip (NoC) is an increasingly important aspect of Multiprocessor System-on-Chip (MPSoC) design. As systems grow in number of components and features, the correct design of the Network-on-Chip has a central role in meeting the performance requirements of the system, because it is responsible for the efficient movement of data inside the MPSoC. In this paper a software tool called NoCSimulator which is based in queueing theory for the estimation of latency and throughput of a NoC is proposed. The contribution of this tool is its ability to generate stochastic traffic patterns based on real data traffic of scientific applications, not only synthetic traffic as similar tools reported in literature. This makes it possible to study NoC performance under real working conditions, which gives better insights about NoC behavior, and improves the design space exploration at early stages of system development. NoCSimulator was validated using two state-of-the-art cycle-accurate simulators (BookSim and Garnet). NoCSimulator, based in queueing theory, does not model hardware aspects of the NoC as a cycle-accurate simulator, so, long simulation times of complex systems can be avoided during design space exploration.
片上网络(NoC)的性能指标评估是多处理器片上系统(MPSoC)设计中越来越重要的一个方面。随着系统组件和功能的增加,片上网络的正确设计在满足系统的性能要求方面起着核心作用,因为它负责MPSoC内部数据的有效移动。本文提出了一种基于排队理论的NoC模拟器软件,用于估计NoC的时延和吞吐量。该工具的贡献在于它能够根据科学应用的真实数据流量生成随机流量模式,而不仅仅是文献中报道的合成流量。这使得在实际工作条件下研究NoC性能成为可能,从而更好地了解NoC行为,并改善系统开发早期阶段的设计空间探索。nosimulator使用两个最先进的周期精确模拟器(BookSim和Garnet)进行验证。基于排队理论的NoC模拟器没有将NoC的硬件方面建模为周期精确的模拟器,因此在设计空间探索时可以避免复杂系统的长时间仿真。
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引用次数: 0
A Comparison of Feature Extractors for Panorama Stitching in an Autonomous Car Architecture 自动驾驶汽车架构全景拼接特征提取器的比较
Edgar Cortés-Gallardo, C. Moreno-García, Alfredo Zhu, Daniela. Chípuli-Silva, J. A. Gonzalez-Gonzalez, Domenico. Morales-Ortiz, Sebastian Fernandez, Bernardo. Urriza, Juan. Valverde-López, Arath Marín, Hugo Pérez, J. Izquierdo-Reyes, Rogelio Bustamante-Bello
Panorama stitching consists on frames being merged to create a 360° view. This technique is proposed for its implementation in autonomous vehicles instead of the use of an external 360-degree camera, mostly due to its reduced cost and improved aerodynamics. This strategy requires a fast and robust set of features to be extracted from the images obtained by the cameras located around the inside of the car, in order to effectively compute the panoramic view in real time and avoid hazards on the road. This paper compares and creates discussion of three feature extraction methods (i.e. SIFT, BRISK and SURF) for image feature extraction, in order to decide which one is more suitable for a panorama stitching application in an autonomous car architecture. Experimental validation shows that SURF exhibits an improved performance under a variety of image transformations, and thus appears to be the most suitable of these three methods, given its accuracy when comparing features between both images, while maintaining a low time consumption. Furthermore, a comparison of the results obtained with respect to similar work allows us to increase the reliability of our methodology and the reach of our conclusions.
全景拼接包括将帧合并以创建360°视图。这项技术被提议用于自动驾驶汽车,而不是使用外部360度摄像头,主要是因为它降低了成本,改善了空气动力学。该策略要求从汽车内部周围的摄像头获得的图像中提取一组快速且鲁棒的特征,以便实时有效地计算全景视图并避免道路上的危险。本文对SIFT、BRISK和SURF三种图像特征提取方法进行了比较和讨论,以确定哪种方法更适合自动驾驶汽车架构中的全景拼接应用。实验验证表明,SURF在各种图像变换下表现出更好的性能,因此在比较两种图像特征时具有准确性,同时保持较低的时间消耗,似乎是这三种方法中最合适的。此外,对类似工作所获得的结果进行比较,使我们能够增加我们方法的可靠性和我们结论的范围。
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引用次数: 5
Toward a Mexican Sign Language System using Human Computer Interface 基于人机界面的墨西哥手语系统研究
C.R. Estrivero-Chavez, M. A. Contreras-Teran, J.A. Miranda-Hernandez, J. Cardenas-Cornejo, M. Ibarra-Manzano, D. Almanza-Ojeda
This article presents a new algorithm that serves as support for people interested in learning sign language base on the Mexican Sign Language Dictionary provided by the CONAPRED (National Council to Prevent Discrimination) in the 2011 edition. The system uses the Leap Motion machine shadow interaction system to capture the position of each finger of both hands, and by geometric modeling up to 27 signs can be statically modeled with an accuracy of 99.80%.
本文提出了一种新的算法,以全国防止歧视委员会(CONAPRED) 2011年版《墨西哥手语词典》为基础,为有兴趣学习手语的人提供支持。该系统使用Leap Motion机器阴影交互系统捕捉双手每个手指的位置,通过几何建模,最多可以静态建模27个手势,准确率达到99.80%。
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引用次数: 1
Flexion Detection Algorithm’s Applied to Classifying Joint Movements Based on Fiber Sensors 弯曲检测算法在纤维传感器关节运动分类中的应用
O. Almanza-Conejo, M. Ibarra-Manzano
Telepresence is a necessity in today’s world, and it is very important to develop it with great precision for assisted robot. Analyzed the movement during the flexion in joins is important to adapt them to robots. This paper presents the signal processing to synthetize the finger movements applied to service robot. Fiber optics sensor is used to detect the angle in the join, after that Recursive Least Square algorithm was carried out to reduce the noise in the signal. Furthermore, statistical feature extraction and machine learning algorithm was performed to classifying the thresholds angle in the join. Comparative analysis was developed to select the best algorithm to detect the angle in the join.
远程呈现技术是当今世界的一种需要,对辅助机器人来说,高精度的远程呈现技术的发展具有十分重要的意义。分析关节屈曲过程中的运动规律对机器人的适应具有重要意义。提出了一种用于服务机器人手指动作合成的信号处理方法。采用光纤传感器检测连接处的角度,然后采用递推最小二乘算法降低信号中的噪声。在此基础上,采用统计特征提取和机器学习算法对连接中的阈值角进行分类。通过对比分析,选择最佳的连接角度检测算法。
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引用次数: 0
Sensorless Field Oriented Control of BLDC motor based on Sliding Mode Observer 基于滑模观测器的无刷直流电机无传感器场定向控制
O. Sandre-Hernández, P. Ordaz-Oliver, C. Cuvas-Castillo
This paper presents the sensorless field oriented control of a brushless direct current motor (BLDC). A sliding mode observer is used to estimate the phase currents, after the current observer, a back-EMF observer is proposed to estimate the electrical position and speed of the rotor. The back-EMF sensorless operation is intended for medium to high speed. A comparison with a conventional observer and the proposed observer is carried out. Numerical simulations are presented to validate the proposed sliding mode observer for the sensorless field oriented control of a BLDC motor.
提出了一种无刷直流电机的无传感器场定向控制方法。采用滑模观测器估计相电流,在电流观测器之后,提出反电动势观测器估计转子的电位置和速度。反电动势无传感器操作适用于中高速。并与传统观测器和所提出的观测器进行了比较。通过数值仿真验证了所提出的滑模观测器在无刷直流电机无传感器场定向控制中的应用。
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引用次数: 3
A Live Emotions Predictor System Using Convolutional Neural Networks 使用卷积神经网络的实时情绪预测系统
Alejandro Salinas-Medina, Humberto Poblano-Rosas, M. Bustamante-Bello, Luis A. Curiel-Ramirez, Sergio A. Navarro-Tuch, J. Izquierdo-Reyes
Facial expression recognition has been an active research area, with an increasing number of applications like avatar animation, cyber security, and neuromarketing. The use of neural networks and data science are having a strong growth in research centers and universities; the field of machine learning is booming because it is a strong tool and it has an immense amount of applications. The purpose of this paper is the development of a Live Emotions Predictor using Convolutional Neural Networks, this was developed in different sections, the part of data processing and its own training using a Convolutional Neural Network (CNN) that generates accurate and precise predictions of the 5 main emotions in a graphical way. For the processing part it is important to have data that can be trained, preprocessing, and thus be able to have better results. The data generated by iMotion® are CSV files and the first part was to be able to have a clean database for its training. In the training part, the challenge was to generate a sufficiently robust CNN so we can obtain highly reliable "accuracy's" (percentages greater than 88%), determining the main architecture and all its layers to obtain these results.
面部表情识别一直是一个活跃的研究领域,在化身动画、网络安全和神经营销等领域的应用越来越多。在研究中心和大学中,神经网络和数据科学的使用正在强劲增长;机器学习领域正在蓬勃发展,因为它是一个强大的工具,它有大量的应用。本文的目的是使用卷积神经网络开发一个实时情绪预测器,这是在不同的部分开发的,数据处理部分和使用卷积神经网络(CNN)的自身训练,以图形方式生成准确和精确的5种主要情绪预测。对于处理部分来说,重要的是要有可以训练、预处理的数据,从而能够得到更好的结果。iMotion®生成的数据是CSV文件,第一部分是能够有一个干净的数据库进行培训。在训练部分,挑战是生成一个足够鲁棒的CNN,这样我们就可以获得高度可靠的“准确率”(百分比大于88%),确定主架构及其所有层以获得这些结果。
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引用次数: 1
Design and 3D printed implementation of a microgripper actuated by a piezoelectric stack 由压电堆叠驱动的微夹持器的设计和3D打印实现
C. A. Ferrara-Bello, J. O. Sandoval-Reyes, P. Vargas-Chable, M. Tecpoyotl-Torres, J. Varona
This article presents the design and implementation of a microgripper device actuated by a piezoelectric stack. In order to reduce fabrication costs, conventional piezoelectric buzzers are used that are easily found in the market at very low cost. Polylactic Acid (PLA) was chosen as the structural material for the design of the mechanisms of the microgripper, the choice of this material considerably reduces the total implementation cost. The originality of this work resides in the material used and in the stacked piezoelectric actuator. The main contribution is the demonstration of a design methodology that implements prototype compliance mechanisms at millimeter scale for validation purposes before proceeding to the fabrication in micrometric scale. Even so, the system in mm scale can also be used for micromanipulation due to the range of its microgripper jaws’ aperture and its reliability. ANSYSTM was used as the software tool for simulation.
本文介绍了一种由压电堆叠驱动的微夹持器装置的设计与实现。为了降低制造成本,传统的压电蜂鸣器在市场上很容易找到,成本很低。采用聚乳酸(PLA)作为微夹持器机构设计的结构材料,大大降低了总实施成本。这项工作的独创性在于使用的材料和堆叠的压电驱动器。主要贡献是演示了一种设计方法,该方法在进行微米尺度的制造之前,在毫米尺度上实现原型遵从机制以进行验证。尽管如此,由于其微夹持钳口孔径的范围和可靠性,该系统在毫米尺度上也可以用于微操作。采用ANSYSTM作为仿真软件工具。
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引用次数: 2
Autonomous Robotic Platform Training on Behavioral Cloning Neural Networks using ROS and VESC Project Resources 基于ROS和VESC项目资源的行为克隆神经网络自主机器人平台训练
Bernardo A. Urriza-Arellano, Edgar Cortés-Gallardo, Rogelio Bustamante-Bello, Antonio C. Rivera-Corona, Areli Rodriguez-Tirado, Christian Tena-Padilla
The endeavor on this paper aims to present a physical robotic platform with the main purpose of addressing the subject of autonomous mobility for both people and goods. The platform, which runs on ROS (Robot Operating System) and VESC Project resources, contains a basic implementation of a behavioral cloning deep neural network in order to achieve a certain level of autonomy, which will be further developed in a series of subsequent papers. Use cases for the autonomous platform are warehouse commodity management, medical material transportation in hospitals, airport luggage logistics and personal mobility for handicapped people. The progress landed in this regard goes in hand with self-driving cars, another key target use case for the proposed platform as test bench. Mobility tests are carried out to assert adequate physical operation, resulting in effective performance at up to 17km/h and secure current, voltage and temperature values for the brushless DC motors, battery and controllers. As for artificial intelligence testing, training accuracy for the neural network presents a value of 0.9536, whereas validation settles at 0.9481, which provides a confident trained model for later implementation.
本文的努力旨在提出一个物理机器人平台,其主要目的是解决人和货物的自主移动问题。该平台运行在ROS (Robot Operating System)和VESC Project资源上,包含了一个行为克隆深度神经网络的基本实现,以实现一定程度的自主性,这将在后续的一系列论文中进一步发展。该自主平台的用例包括仓库商品管理、医院医疗物资运输、机场行李物流和残疾人个人出行。在这方面取得的进展与自动驾驶汽车密切相关,自动驾驶汽车是该平台作为试验台的另一个关键目标用例。进行流动性测试以确保适当的物理操作,从而在高达17公里/小时的速度下实现有效性能,并确保无刷直流电机、电池和控制器的电流、电压和温度值。在人工智能测试中,神经网络的训练精度为0.9536,验证值为0.9481,为后续实现提供了一个可信的训练模型。
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引用次数: 0
期刊
2019 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE)
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