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38th Chinese Control Conference, CCC 2019

作者： Wang, Yi-Hao Huang, Yan-Li Ren, Shun-Yan Lu, Jian-Mou Liu, Dong-Fang Tianjin Key Laboratory of Optoelectronic Detection Technology and System School of Computer Science and Technology Tianjin Polytechnic University Tianjin300387 China School of Mechanical Engineering Tianjin Polytechnic University Tianjin300387 China Tianjin Tianhang Wisdom Technology Co. Ltd Tianjin300452 China

ISBN: (纸本)9789881563972

Synchronization and H∞ synchronization of multi-weighted coupled neural networks (MWCNNs) with event-triggered communication are researched in this paper. Firstly, we derive a synchronization criterion for MWCNNs with event-triggered communication by using Lyapunov stability theory and some inequality techniques. Then, we use the similar method to get a criterion for ensuring the H∞ synchronization of the considered network at the level of disturbance attenuation. Finally, two numerical examples are verified to demonstrate the effectiveness of the obtained synchronization and H∞ synchronization criteria. © 2019 Technical Committee on Control Theory, Chinese Association of Automation.

关键词： Synchronization Couplings Manganese Neural networks Lyapunov methods Complex networks Attenuation

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Network Parameter Generation for One-Shot Object Detection

Network Parameter Generation for One-Shot Object Detection

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2019 IEEE International Conference on Unmanned systems, ICUS 2019

作者： Wang, Kang Zhao, Jiajia Wang, Yang Zhou, Shuigeng Fudan University Shanghai Key Lab of Intelligent Information Processing School of Computer Science Shanghai200433 China Beijing Electro-Mechanical Engineer Institute Science and Technology on Complex System Control and Intelligent Agent Cooperation Laboratory Beijing China Nanchang University School of Information Engineering 330031 China

ISBN: (纸本)9781728137926

Recent object detection models have achieved satisfactory performance by deep learning with large-scale annotated datasets. However, these models often perform poorly when the training examples are not sufficient enough, especially for one-shot object detection where there is only one training example of each target class. In this paper, we propose a network parameter generation framework for effective one-shot object detection. By leveraging the semantic relationship between the source-domain and the target-domain (new classes), our framework can generate network parameters for the new classes directly. Furthermore, we develop two implementation schemes for this framework: weighting-based parameter generation and regression-based parameter generation. These two schemes use different information to construct the relationship and transfer knowledge from the source-domain to the target-domain. Experiments on the PASCAL-OSCD benchmark show that our methods can significantly boost the performance of one-shot object detection. © 2019 IEEE.

关键词： Object detection

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A novel method to increase energy density of permanent magnet machine based on multi-physical field analysis

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UPB Scientific Bulletin, Series D: mechanical engineering 2020年第4期82卷 79-92页

作者： Zheng, Qingchun Zhao, Yangyang Zhu, Peihao Wang, Sen Liu, Jingna Ma, Wenpeng Li, Xiang Xiao, Yinhong Wang, Naixin Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin300384 China School of Computer Science Tianjin University of Technology Tianjin300384 China School of Automation Shenyang Institute of Engineering Shenyang110136 China Baoding Power Supply Company Hebei Electric Power Company State Grid Corporation of China Baoding071000 China

As an important component of all-electric aircraft, the main propulsion machine is developing towards high energy density, high efficiency and high fault tolerance. In order to improve the energy density of main propulsion machine for all-electric aircraft, a novel approach, which can be used for excellent performance improvement of electric machine of all-electric aircraft, is reported in this paper. The analytical formula of energy density is put forward and the design method of high energy density permanent magnet machine is presented. A high energy density machine with rated power of 30kW is designed, and the electromagnetic field simulation analysis, strength and stress structure verification, temperature field simulation analysis and multi-physical field coupling analysis are obtained. A prototype is developed, the experiment platform is established, and experiments are performed. The energy density of main propulsion machine designed is up to 21kW·N·m/kg2, and the index is increased by 3.2 times. The optimal method based on the multi-physical field analysis can be also applied to other high energy density machines. © 2020, Politechnica University of Bucharest. All rights reserved.

关键词： Electromagnetic fields

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Effect of ply thickness on impact damage modes of thin-ply CFRP laminates 22

Effect of ply thickness on impact damage modes of thin-ply C...

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22nd International Conference on Composite Materials, ICCM 2019

作者： Yamada, Kohei Yamamoto, Satoru Kanesaki, Manato Nishikawa, Masaaki Matsuda, Naoki Kawabe, Kazumasa Hojo, Masaki Industrial Technology Center of Fukui Prefecture 61-10 Kawaiwashizuka Fukui910-0102 Japan Department of System Engineering Faculty of Computer Science and Systems Engineering Okayama Prefectural University 111 Kuboki Soja Okayama719-1197 Japan Department of Mechanical Engineering and Science Kyoto University C3 Kyoto Daigaku-Katsura Nishikyo-ku Kyoto615-8540 Japan

In this study, impact tests and compressive after impact (CAI) tests of quasi-isotropic laminates, which had different ply thicknesses using thin-ply prepreg whose thickness was 0.02 mm, were conducted. The effects of ply thickness and impact energy on the damage modes in impact tests and CAI strength were investigated. Furthermore, a precise observation of failure by an impact load inside the laminates using X-ray computed tomography (X-ray CT) was carried out. Results confirmed that fiber breakages became a predominant damage mode by decreasing the ply thickness owing to constraining effect of neighbouring layers, while most of failures in thick-ply laminates were dominated by matrix damage such as matrix cracks and delamination. Moreover, when the ply thickness decreased, the decreasing rate of CAI strength became larger than that of thick-ply laminates owing to the accumulation of fiber breakage in thickness direction in the case of a high impact energy, while the CAI strength was improved when the impact energy was below 5 J/mm. © 2019 International Committee on Composite Materials. All rights reserved.

关键词： computerized tomography

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Group maintenance strategy for stochastic selective maintenance

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International Journal of Wireless and Mobile Computing 2018年第4期14卷 362-368页

作者： Zhao, Jing Zeng, Jianchao Division of Industrial and System Engineering Taiyuan University of Science of Technology Taiyuan030024 China College of Information Engineering Guangdong Mechanical and Electrical Polytechnic Guangzhou510515 China School of Computer Science and Control Engineering North University of China Taiyuan030051 China

Selective maintenance is often applied to many industrial environments when the maintenance actions are performed between sequence missions. When the length of maintenance or work mission time is stochastic and there are multiple maintenance workers with different capacity, previous works to determine maintenance and mission times are unsuitable for it. Assuming that the time of work mission is random and maintenance time is determined, to maximise system reliability of next work mission, this paper proposes a stochastic model for a two-state system comprising several series-parallel components with multiple maintenance workers under the maintenance time limit. The optimal maintenance plan is obtained by hybrid intelligent optimisation algorithm. The validity and feasibility of the model are verified by the simulation. Copyright © 2018 Inderscience Enterprises Ltd.

关键词： Stochastic models

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An intelligent system for identifying feasible routes for truck routing problem: An application to a Thai adhesive and sealant company (ATASC) 16

An intelligent system for identifying feasible routes for tr...

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16th International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information Technology, ECTI-CON 2019

作者： Phonwiphat, Pathawee Pannakkong, Warut Yenradee, Pisal Ekkachai, Kittipong Takahashi, Atsushi Thammasat University Department of School of Information and Communication Technology Klong Luang Pathumthani Thailand Thammasat University Department of School of Manufacturing System and Mechanical Engineering Klong Luang Pathumthani Thailand National Science and Technology Development Agency National Electronics and Computer Technology Center Klong Luang Pathumthani Thailand Tokyo Institute of Technology Department of School of Engineering Tokyo Japan

ISBN: (纸本)9781728133614

This paper proposes an algorithm implemented in a web application to find feasible route for planning in truck transportation. The logistic route planning problem has attracted a lot of effort, however, most of the earlier researches are not be directly applicable to this problem because practical logistic constraints such as the width of the road or height of the tunnel are not considered. Furthermore, drivers' basic needs in taking the time off for relaxation and lunch are involved into the delivery time computation as well. The web application has an ample amount of trials which were compared to a database of transportation in real-time. The results from a case study of Thai Adhesive and Sealant Company show a significant improvement, approximately about thirty-five percent, in forecast preciseness while the mistake rate is dropped. Moreover, this application can be applied to other industries that require feasible trucking logistics planning. © 2019 IEEE.

关键词： Sealants

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Optimization Method for an Information Interaction Interface from Error-Cognition to Information Feature Mapping

Research Square

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Research Square 2020年

作者： Wu, Xiaoli Caldwell, Sabrina School of Design Art & Medial Nanjing University of Science & Technology Nanjing210094 China Research School of Computer Science The Australian National University ACT Australia College of Mechanical and Electrical Engineering Hohai University Changzhou China Lab of Human Factors and Information System Interaction & Design Hohai University Changzhou China

Background- With the rapid development of digital and intelligent information systems, display of visual information in interfaces has become an important challenge in the field of human-computer interaction. Objective- We propose a method for the optimization of information interaction interfaces from error-cognition through the mapping of information characteristics. Method- A mapping method of matrix description is adopted to analyze the association properties between error-cognition sets and design information sets. Results- Based on the mapping relationship between the domains of error-cognition and design information, a cross-correlational analysis is carried out between error-cognition and design information. Conclusion- We obtain the relationship matrix between the error-cognition of correlation between design information and the degree of importance among design information. Application- Taking the task interface of a warfare navigation display as an example, error factors and the features of design information are extracted. Based on the results, we also propose an optimization design scheme for the monitoring task interface. © 2020, CC BY.

关键词： Errors

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Offset-Free MPC for Resource Sharing on a Nonlinear SCARA Robot⁎

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IFAC-PapersOnLine 2018年第20期51卷 265-272页

作者： Bianchi, M. van der Maas, A. Maljaars, E. Heemels, W.P.M.H. Department of Mechanical Engineering Control System Technology Group Eindhoven University of Technology Eindhoven5600MB Netherlands Department of Information Engineering Computer Science and Mathematics Center of Excellence DEWS University of L'Aquila L'Aquila67100 Italy

High-precision motion industrial systems must satisfy tight performance requirements. Both positioning accuracy and throughput demands are typically achieved through improvements in hardware, thereby raising the bill of materials. A cost saving alternative could be to strive for a reduction in the hardware components needed, in combination with advanced motion control, to still meet the desired specifications. Particularly, in this paper, the possibility is analyzed to allow for resource sharing among several actuators. This results in a switched system, for which we develop a real-time MPC algorithm for optimization of both the input and the switching signals. This implementation applies to a fairly general class of nonlinear systems and uses a novel offset-free formulation in velocity form for LTV prediction models, to realize good tracking performance under the resource sharing constraints. We provide a proof of concept for this MPC solution on a high fidelity model of an industrial SCARA robot, where it is proposed to use a single amplifier to serve two actuators. The MPC solution is compared to heuristically switched LTI controllers, and the potential of the proposed approach is shown in simulations. © 2018

关键词： computer systems programming

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Experimental Study of Heat Transfer Using Water – Cooled Condensers to Increase Oil Production from Plastic Waste

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Journal of Physics: Conference Series 2021年第1期1764卷

作者： Suryadimal Rizky Arman Elmi Sundari Yeasy Darmayanti Raimon Efendi Mechanical Engineering Department Industrial Faculty Engineering Universitas Bung Hatta Indonesia Chemical Engineering Department Industrial Faculty Engineering Universitas Bung Hatta Indonesia Accountancy Department Economic and Bisnis Faculty Universitas Bung Hatta Indonesia Information System Department Computer Science Faculty Universitas Dharmas Indonesia

This study aims to determine the performance of the heat exchanger in Low Density Polyethylene non-organic waste refining tools into fuel oil. This research is an experimental study that uses plastic waste obtained from scavengers and then cleaned, dried and chopped with a small size and then inserted into a three condenser level during a certain time. After the combustion temperature rises, water as a cooling medium is flowed in the pipe so that condensation occurs in the oil pipe. The results of the test carried out in the process of cracking plastic waste into fuel oil are affected by time, volume, temperature and heat transfer rate. Testing time for 30 minutes on the condenser obtained the heat transfer rate in the pipe 558.4 W, at 60 minutes the value of heat transfer was 732.2 W, while at 90 minutes the average heat transfer value was 1039.7 W. There was an increase in the heat transfer value as it increased Combustion time and oil produced by the reactor averaged 812 ml.

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Data-Driven Modeling & Analysis of Dynamic Wake for Wind Farm Control: A Comparison Study

Data-Driven Modeling & Analysis of Dynamic Wake for Wind Far...

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Chinese Automation Congress (CAC)

作者： Zhenyu Chen Bart M Doekemeijer Zhongwei Lin Zhen Xie Zongming Si Jizhen Liu Jan-Willem van Wingerden State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control Computer and Engineering North China Electric Power University Beijing China Delft Center for Systems and Control (DCSC) Faculty of Mechanical Maritime and Materials Engineering (3mE) Delft University of Technology The Netherlands CHN ENERGY (Shandong) New Energy Co. Ltd Jinan PR China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

For the study of wind farm and wake effect, the steady-state wake models like FLORIS were proposed and used during wind farm operations to achieve higher wind power utilization and conversion. However, the dynamic performance of the wake should also be involved in favor of better optimizations. In this paper, a data-driven analysis and modeling method, dynamic mode decomposition (DMD), is used to construct dynamic flow model with high-fidelity flow data. Two DMD-derived models are constructed based on flow data in three-dimensional and two-dimensional spaces, respectively. The obtained models and respective flows are compared in the time and frequency domain. Results show that both models have apparent differences in the frequency domain, but the dominant wake characteristics' consistency is maintained.

关键词： Wind turbines Wind farms Analytical models Mathematical model Computational modeling Solid modeling Wind speed

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