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检索条件"任意字段=3rd International Conference on Robotics, Control and Automation Engineering, RCAE 2020"

共 546 条记录，以下是361-370 订阅

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Call-technolgy based approach to control acquisition of foreign language skills 3

Call-technolgy based approach to control acquisition of fore...

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3rd international conference on R. Piotrowski's Readings in Language engineering and Applied Linguistics, PRLEAL 2019

作者： Nymm, Voldemar Piotrowska, Xenia Nõmm, Sven Ronzhin, Andrey Herzen State Pedagogical University of Russia St. Petersburg Russia Department of Software Science School of Information Technology Tallinn University of Technology Tallinn Estonia St. Petersburg Institute for Informatics and Automation Russian Academy of Sciences St. Petersburg Russia

Foreign language skills acquisition with the support of CALL technology constitutes the subject of the present research. In the absence of the model to estimate the state of the student knowledge level one could not apply classic control algorithms to steer the language learning process. A solution combining the hypothesis about the holographic memory structure and auto-associative sampling is proposed to overcome this gap. This requires one to state desired learning outcomes between two learning goals. Then the single element learning model may be applied to control grammar skills acquisition process. The proposed solution has been implemented in the form of computer-assisted language learning software providing all the necessary functions to support and test the skill acquisition process. Moreover, being executed in the frameworks of the mass experiment allows easy integration with the language learning courses of university curricula and provides the data describing reactions of the students to the shown stimuli-exercises. The last one is essential for any academic research in this area. Copyright © 2019 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 international (CC BY 4.0).

关键词： Students

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Coverage and Deployment Analysis of NB-IoT Technology under Various Environment Scenarios

Coverage and Deployment Analysis of NB-IoT Technology under ...

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international conference on Societal automation (SA)

作者： Bruno Ferreira Bruno Gaspar Sofia Paiva António Santos Jorge Cabral Algoritmi Center University of Minho Braga Portugal Radio Access Network \ Architecture and Solutions NOS Technology Lisbon Portugal Hardware and Sensors DTx - Digital Transformation Colab Guimarães Portugal AI5 (Analytics IoT and 5G) CEiiA NOS Comunicações SA Lisbon Portugal Centre of Engineering and Product Development Algoritmi Center University of Minho Portugal

Standardized by the 3rd Generation Partnership Project (3GPP) and introduced in release 13, the Narrowband-IoT (NB-IoT) technology seems well suited for wireless IoT end devices with low power consumption, low data throughput, and long-range communication requirements, which need to control and monitor environmental conditions in remote and harsh locations. However, being NB-IoT an emerging technology, it is necessary to study its reliability under such use-case scenarios. This paper presents an NB-IoT coverage analysis in the North region of Portugal under various environment scenarios: indoor, underground, and inside an underground concrete dome with an iron cover, using a custom-developed NB-IoT end device equipped with the Quectel BC66 as the communication modem and a custom application executing over the Azure ThreadX RTOS. Our investigation leans over the coverage quality based on some indicators collected, such as RSRP, RSRQ, RSSI, ECL, PCI, and transmission power. The obtained results indicate that this technology is capable of satisfying the requirements of the most demanding IoT applications, with percentages of successful transmissions above 96%, even at distances greater than 1400m between the device and the communication infrastructure (LTE) cell, or even in regions with very low/noise floor coverage.

关键词： Wireless communication Power demand Key performance indicator Throughput Modems Internet of Things 3GPP

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Precision Cavity Length control System Design for Ring Laser Gyroscope

Precision Cavity Length Control System Design for Ring Laser...

引用

IEEE international conference on Mechatronics, robotics and automation (ICMRA)

作者： Shuying Li Zhaoyang Xu San Zhang School of automation Xi'an University of Posts and Telecommunications Xi'an China

ISBN: (数字)9781728190327

ISBN: (纸本)9781728190334

Laser gyroscope is a kind of high precision angular sensor which has been widely used in strapdown inertial navigation system. The cavity length of laser gyroscope varies with the external temperature changes, which have influence on the scale factor stability and bias stability. In this regard, to control cavity length of laser gyroscopes with higher precision and reliability, a precision cavity length control system with self-adaption temperature compensation method is designed. The main motivation of this contribution is to design the higher accurate cavity length control system with self-adaption temperature compensation algorithm embedded. Experimental tests show the significant performance and effectiveness of cavity length control system proposed.

关键词： Temperature Laser stability control systems Gyroscopes Circuit stability Temperature control Thermal stability

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The Walking Robot Based on Mechanical Connecting-rod 3

The Walking Robot Based on Mechanical Connecting-rod

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3rd Artificial Intelligence and Cloud Computing conference, AICCC 2020

作者： Zhang, Jian-Bing Wang, Xiao-Ping School of Mechanical and Electrical Engineering and Automation Nanhang Jincheng College Nanjing China

ISBN: (纸本)9781450388832

In recent years, China's investment in space technology and natural environment has been increasing. In recent years, China's investment in space technology and natural environment has been increasing. First of all, it must be the bionic robot with strong adaptability to explore the surfaces of the moon, Mars and other planets under an uncertain environment. Compared with wheeled or tracked robot, the standpoints of the legged robot are discrete points, which can select optimal supporting spots on the ground, so the legged robot is better, especially the legged robot with eight legs. And the walking robot based on connecting-rod has been widely used because of its simple structure and strong load capacity. Secondly, due to the wide use of computer in society as well as the fast development of integrated circuit, SCM is playing a greater role. It has a lot of functions, can work steadily, and can be used conveniently but with small volume and low price so many of them are applied in the control systems, but more applications in the automatic control system, data acquisition, military products as well as appliances and other fields. And according to the specific hardware structure and the object, using the software makes it more perfect. In this paper, we designed a walking robot adopted the structure of connecting-rot, and take the SCM LM298 as the core of controlling. The robot takes its operation by using the integrated chips of encoding and decoding. This walking robot has realized many functions such as walking, turning back, left and right. © 2020 ACM.

关键词： Mobile robots

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The Strategy of Online Furnace of Pending Rolling Temperature Optimization Based on Genetic Algorithm

The Strategy of Online Furnace of Pending Rolling Temperatur...

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IEEE international conference on Mechatronics, robotics and automation (ICMRA)

作者： Zhengguang Xu Junxi Zhao Kuo Sun Siqaing Niu Yanrong Lu Li Yuan Tao Liu School of Automation & Electrical Engineering University of Science and Technology Beijing Beijing China

ISBN: (数字)9781728190327

ISBN: (纸本)9781728190334

A mathematical model of the steel billet heating process of the step-by-step heating furnace is established. According to the mathematical model, the state of the furnace billet's temperature is predicted after a period of time when the furnace is pending rolling, a genetic algorithm is proposed to make the billet temperature meet the process requirements and reduce energy consumption. The heating curve of the process of seeking heating furnace pending rolling on-line is realized and the energy consumption of the furnace is reduced and the heating time after the end of the pending rolling is eliminated.

关键词： Heating systems Temperature distribution Billets Energy consumption Furnaces Mathematical model Genetic algorithms

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Navigation and guidance control system of UNUSAITS AUV based on dynamical system using ensemble kalman filter square root 3

Navigation and guidance control system of UNUSAITS AUV based...

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3rd international conference on Combinatorics, Graph Theory, and Network Topology, ICCGANT 2019

作者： Herlambang, T. Subchan Nurhadi, H. Information System Department-University of Nahdlatul Ulama Surabaya [UNUSA Indonesia Department of Mathematics Fmksd Its Indonesia Department of Mechanical Engineering Vocational Faculty ITS Indonesia Center of Excellence for Mechatronics Industrial Automation [PUI-PT MIA-RC Indonesia

This study presents the development of navigation system of AUV. It is initially in the form of a nonlinear system model to determine the trajectory for the AUV motion control. The non-linear system model of UNUSAITS AUV is then implemented in the Square Root Ensemble Kalman filter (SR-EnKF) to estimate the trajectory of the AUV. The developed EnKF algorithm covers two types of simulations. The contribution from this paper is trajectory or position estimation of nonlinear UNUSAITS AUV system with 6-DOF AUV model. The result of model estimation is presented based on numeric study and simulation. The first simulation is dedicated to generate 400 ensembles, and the second simulation is to generate 400 ensembles. The second simulation shows that the 500 ensembles give more accurate results. A further examination on the accuracy has been performed by accounting for the RMSE of actual condition and the estimation from the simulation, which yields the range of accuracy between 97 % up to 99%. © Published under licence by IOP Publishing Ltd.

关键词： Trajectories

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Soft Robotic Module for Sensing and controlling Contact Force

Soft Robotic Module for Sensing and Controlling Contact Forc...

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IEEE international conference on Soft robotics (RoboSoft)

作者： A. Buso R.B.N. Scharff E.L. Doubrovski J. Wu C.C.L. Wang P. Vink Department of Design Engineering Delft University of Technology CE The Netherlands Department of Mechanical and Automation Engineering The Chinese University of Hong Kong Shatin N.T. Hong Kong

ISBN: (数字)9781728165707

ISBN: (纸本)9781728165714

This work presents a soft robotic module that can sense and control contact forces. The module is composed of a foam spring encapsulated by a pneumatic bellow that can be inflated to increase its stiffness. Optical sensors and a light source are integrated inside the soft pneumatic module. Changes in shape of the module lead to a variation in light reflectivity, which is captured by the optical sensors. These shape measurements are combined with air pressure measurements to predict the contact force through a machine learning model. Using these predictions, a closed-loop control of the contact force was implemented. The modules can be applied to realize pressure distribution control in support devices such as seats and mattresses. The presented method is robust and low-cost, can measure both shape and contact force, and does not require (rigid) sensors to be present at the movable contact interface between the support device and the user.

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A Robust Visual Loop-Closure Detection Method of vSLAM for Ambiguous Environment 3

A Robust Visual Loop-Closure Detection Method of vSLAM for A...

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3rd international conference on control and Computer Vision, ICCCV 2020

作者： Chen, Kaixuan Wu, Junjun Li, Zhen Tu, Ruiwei School of Mechanical Engineering and Automation Foshan University China School of Cosmetics and Artistic Designing Guangdong Food Drug Vocational College China School of Software Guangdong Food Drug Vocational College China

ISBN: (纸本)9781450388023

Loop-closure detection is a significant component for autonomous robot SLAM to build a map of the environment. However, the robustness of visual SLAM loop-closure detection in outdoor complex environment is severely restricted by perceptual aliasing, which is caused by changes in illumination, viewpoint and scale. In this paper, we present a novel method with high robustness and low complexity for visual loop-closure detection of autonomous robot. Our method extracts invariable local features, then clusters environmental invariable image descriptors. To reduce the selection complexity of massive loop-closure candidates to sub-linear, hash the image descriptors to Locality-Sensitive Hashing table without losing the invariant ability of image descriptors. The proposed method is tested efficiency and complexity experimentally using a publicly available dataset, results demonstrate that our method can recognize complex surroundings online with good robustness and has good applied value in constructing map accurately for autonomous robot visual SLAM in outdoor environment. © 2020 ACM.

关键词： Robots

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Open-Box Target for Extrinsic Calibration of LiDAR, Camera and Industrial Robot

Open-Box Target for Extrinsic Calibration of LiDAR, Camera a...

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IEEE international conference on Mechatronics, robotics and automation (ICMRA)

作者： Aquib Rashd Wolfram Hardt Alexey Kolker Mohamad Bdiwi Matthias Putz Fraunhofer IWU Chemnitz Germany TUC Chemnitz Germany Faculty of Automation and Computer Engineering Novosibirsk State Technical University Russia Fraunhofer IWU

ISBN: (数字)9781728190327

ISBN: (纸本)9781728190334

Low cost 3D LiDAR complements cameras in perception algorithms for various robotic applications. Safe and efficient human robot collaboration requires easy and accurate extrinsic calibration of sensors with an industrial robot. This work presents an efficient and accurate method for extrinsic calibration between LiDAR, camera and an industrial robot. Open-box target mounted on robot enables parameter estimation by constraining sensor data to multiple planes, which constitute the target planner surface. The method enables extraction of eight correspondences between the sensors and the robot in each data sample. The method enables speedup in sensor setup and drastically reduces efforts required for data collection through automation. The results have been evaluated for a simulated and real environment.

关键词： Laser radar Service robots Robot vision systems Estimation Cameras Calibration Sensors

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An Island Remote Sensing Image Segmentation Algorithm Based on A Fusion Network with Attention Mechanism 3

An Island Remote Sensing Image Segmentation Algorithm Based ...

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2020 3rd international conference on Computer Information Science and Artificial Intelligence, CISAI 2020

作者： Chen, Tianyuan Wang, Hongfei Liu, Hao Wu, Peng Key Laboratory of Space Utilization Technology and Engineering Center for Space Utilization Chinese Academy of Sciences Beijing100094 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing100190 China School of Artificial Intelligence University of Chinese Academy of Sciences Beijing100049 China

With the increasing importance of islands in many fields, it has become the focus of research to obtain information from island remote sensing images efficiently by using image semantic segmentation algorithm. In recent years, deep learning methods based on convolutional neural network have been widely used in image segmentation. However, in view of the problems that remote sensing images contain richer ratio information and complex background interference, we propose an island remote sensing image segmentation algorithm based on a fusion network with attention mechanism, called AFU-Net. The network is built on the basis of FC_U-Net [1]. An attention mechanism is added to pre-weight the shallow features before deep-shallow layer feature fusion, in order to enhance the response capability of the target features, suppress the background interference and improve the segmentation accuracy of the network. The testing and comparative experiments on NWPU-RESISC45 dataset show that the quantitative metrics and visual effects of AFU-Net are greatly improved compared to FC_U-Net, and are also superior to other three state-of-the-art methods, U-Net, FCN, SegNet, which indicates the effectiveness of our method. © Published under licence by IOP Publishing Ltd.

关键词： Semantic Segmentation

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