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International Journal of Control and Automation 2016年第9期9卷 343-352页

作者： Zhang, Haiyan Gao, Shangbing Xue, Jianxun Zheng, Hao Faculty of computer and software Jiangsu Provincial Key Laboratory for advanced manufacturing technology Huaiyin Institute of Technology Huai'an China The Key Laboratory for traffic and transportation security of Jiangsu Province Huai'an China Key Laboratory of Trusted Cloud Computing and Big Data Analysis Nanjing Xiaozhuang University Nanjing China

To address the problem of detecting the specific object of flame, this paper proposes quaternion discrete cosine transform based video flame detection algorithm in conjunction with the bottom-up visual attention mechanisms and the flame features. According to the characteristics of the flame to be detected, the brightness, color, texture and motion information of the image are respectively defined and extracted to form a quaternion image, and then the flame saliency map is produced by Quaternion discrete cosine Transform with this quaternion image. Extensive experimental results verify the accuracy and robustness of the proposed method on flame detection. © 2016 SERSC.

关键词： Discrete cosine transforms

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Possible pairing symmetry in the FeSe-based superconductors determined by quasiparticle interference

arXiv

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arXiv 2018年

作者： Gao, Yi Wang, Yuting Zhou, Tao Huang, Huaixiang Wang, Qiang-Hua Center for Quantum Transport and Thermal Energy Science School of Physics and Technology Nanjing Normal University Nanjing210023 China Jiangsu Key Lab on Opto-Electronic Technology School of Physics and Technology Nanjing Normal University Nanjing210023 China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication Engineering South China Normal University Guangzhou510006 China Department of Physics Shanghai University Shanghai200444 China National Laboratory of Solid State Microstructures & School of Physics Nanjing University Nanjing210093 China Collaborative Innovation Center of Advanced Microstructures Nanjing210093 China

We study the momentum-integrated quasiparticle interference (QPI) in the FeSe-based superconductors. This method was recently proposed theoretically and has been applied to determine the pairing symmetry in these materials experimentally. Our findings suggest that, if the incipient bands and the superconducting (SC) pairing on them are taken into consideration, then the experimentally measured bound states and momentum-integrated QPI can be well fitted, even if the SC order parameter does not change sign on the Fermi surfaces. Therefore, we offer an alternative explanation to the experimental data, calling for more careful identification of the pairing symmetry that is important for the pairing mechanism. Copyright © 2018, The Authors. All rights reserved.

关键词： Selenium compounds

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System Calibration Towards Automated Nanomanipulation Inside Scanning Electron Microscope

System Calibration Towards Automated Nanomanipulation Inside...

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IEEE International Conference on Cyber technology in Automation, Control, and Intelligent Systems

作者： Mingyu Wang Yaqiong Wang Zhan Yang Tao Chen Lining Sun Toshio Fukuda Jiangsu Provincial Key Laboratory of Advanced Robotics & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Department of Micro-Nano Systems Engineering Nagoya University

ISBN: (纸本)9781538604915

This paper presented the calibration of the nanorobotic manipulator inside Scanning Electron Microscope (SEM). Repeating movement is frequently happing to reach the predetermined position and in order to realize the automated nanomanipulation inside SEM, the errors of the nanomanipultor and the system must be analyzed. A series of experiments based on SEM image feedback were conducted and the end-effectors can characterize the relationship of the two axis. An atomic force microscope (AFM) cantilever was assembled on the top of the nanorobotic manipulator, which moved straightly along the X or Y axis under stable speed. Through SEM video stream, a image processing method was used to analyze the errors of the nanomanipultor and the thermal drift of the encoder. The movement of nanomanipultor presented the good linearity and the error between the platform and the image coordinates were deteced. The slope of the x-direction is less than 1.7° and the slope of the y-direction is less than 0.8°. The nanomanipultor corrected his own track until the drift error is accumulated to 260 nm.

关键词： Scanning Electron Microscope (SEM) Nanorobot Nanomanipulation Nanorobotics Scanning Electron Microscope drift loss Atomic Force Microscopy y axis lateral axis image processing method y direction Automation Electron Microscope

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A non-resonant rotational triboelectric energy harvester with high output performance

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Journal of Physics: Conference Series 2018年第1期1052卷

作者： J Lin H Liu T Chen Z Yang L Sun School of Mechanical and Electric Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 China

Energy harvesting technology has received significant attention around the globe over decades. However, it meets with difficulties of achieving high output performance under non-resonant frequency. In this paper, a non-resonant rotational triboelectric energy harvester with high output performance, which relied on the coupling of triboelectrification and electrostatic induction, was presented. The harvester introduced a cylindrical stator and disk-shaped rotor, which are made of NdFeB. Without complicated movement mechanism, the stator and rotor, of a higher pair have theoretical line contact by magnetic attractive force. Under a hand shake frequency of about 8Hz, the peak-peak value can reach to 140V. The maximum power of 0.31mW was obtained at a resistance of about 107Ω. In addition, the voltage can reach up to 154V when running at a speed of 8 km/h on the treadmill. The harvester can be potentially used as a power supply to intelligent wearable devices.

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A Low-Frequency Three-Dimensional Hybrid Energy Harvester

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Journal of Physics: Conference Series 2018年第1期1052卷 012089-012089页

作者： Zhang, J Chen, T Liu, H Sun, L School of Mechanical and Electric Engineering Jiangsu Provincial Key Laboratory of Advanced Robotics Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 China

This paper reports a new design of a three-dimensional vibration energy harvester with high energy output and low working frequency. In a three-dimensional vibrating environment, this electromagnet harvesting structure will have voltage outputs from any directions under a low driving frequency. The volume is about 30mm*30mm*27mm. For an excitation acceleration of 1g, the peak voltage and power output of the electromagnetic part under the vertical vibration can reach to 1.3 V and 0.31mW/cm3, respectively. When the excitation comes from horizontal direction, the peak voltage and power output of electromagnetic part can reach to 361 mV and 0.88mW at 30 Hz. The maximum output of triboelectric part under the vertical vibration can reach to 20V and 17.32μW/cm2 at the excitation frequency of 35 Hz.

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Design and verification of multi micro-manipulation strategies

Design and verification of multi micro-manipulation strategi...

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2016 IEEE Workshop on advanced robotics and its Social Impacts, IEEE ARSO 2016

作者： Li, Guanghui Chen, Tao Cao, Junjie Yang, Zhan Liu, Huicong Jiangsu Provincial Key Laboratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215123 China

ISBN: (纸本)9781509040773

This paper presents different micro-manipulation strategies on various micro-spheres and adaptive end-effectors. Adjustable multi-gripper platform was designed to carry out these strategies. Among these strategies, two kinds of mechanical clamping methods were established based on double-gripper. Three kinds of micro spheres were picked up in the experiments with adhesive force strategies. Triple-finger gripper was used to verify the clamping and releasing strategy. The end-effectors such as tungsten probes, fibers and AFM probes had been used. Spheres with diameters of 20 μm, 60 μm, 80 μm and 800 μm were used to verify these composite strategies. The materials of spheres are silica, iron and boron silicate. The results show that this design of strategies is closely adapted to the manipulation tools, end-effectors and vision systems. © 2016 IEEE.

关键词： MEMS

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Design of a flexible polishing force control flange

Design of a flexible polishing force control flange

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2016 IEEE Workshop on advanced robotics and its Social Impacts, IEEE ARSO 2016

作者： Huang, Ting Li, Chuang Wang, Zhenhua Sun, Lining Chen, Guodong Jiangsu Provincial Key Laboratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215012 China

ISBN: (纸本)9781509040773

In order to resolve issues such as excessive rigidity in polishing process with industrial robot, this paper proposed a solving method by installing a force feedback device at the robot end, designed an integrated pneumatic drive, servo control, mechanical drive force control flange device, built its control system platform, and proved in experiments that the dynamic performance of this device meets the requirements of the grinding and polishing system with industrial robot. © 2016 IEEE.

关键词： Force control

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Weld seam detection based on visual saliency for autonomous welding robots

Weld seam detection based on visual saliency for autonomous ...

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2016 IEEE Workshop on advanced robotics and its Social Impacts, IEEE ARSO 2016

作者： Li, Na Wang, Zhenhua Xu, Hui Sun, Lining Chen, Guodong Jiangsu Provincial Key Laboratory of Advanced Robotics and Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215012 China

ISBN: (纸本)9781509040773

Nowadays autonomous welding robots are gaining importance. Weld seam detection is a key technology in robotic welding which is usually performed using a visual system. In most existing vision-based approaches, traditional image processings are used to obtain weld seams. Generally, these approaches are sensitive to their surrounding environment, especially illumination. Therefore, we address the problem by introducing the visual attention mechanism of the primate. Firstly, image preprocessing is executed to block visual interferences. Secondly, a visual saliency model based on local contrast is proposed to emphasize weld seam candidates. Finally, some basic image processings are performed to extract the desired weld seam. In order to validate the proposed approach, experiments are carried out in different cases: two types of joints (butt and fillet joint) and three types of shapes (straight line, zigzag and curve). The results demonstrate that this method is effective and robust, and is useful for autonomous welding robots. © 2016 IEEE.

关键词： Image processing

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C4N3H monolayer: A two-dimensional organic Dirac material with high Fermi velocity

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Physical Review B 2017年第19期96卷 195412-195412页

作者： Hongzhe Pan Hongyu Zhang Yuanyuan Sun Jianfu Li Youwei Du Nujiang Tang National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for Nanotechnology Nanjing University Nanjing 210093 China School of Physics and Electronic Engineering Linyi University Linyi 276005 China Department of Physics East China University of Science and Technology Shanghai 200237 China

Searching for two-dimensional (2D) organic Dirac materials, which have more adaptable practical applications compared with inorganic ones, is of great significance and has been ongoing. However, only two such materials with low Fermi velocity have been discovered so far. Herein, we report the design of an organic monolayer with C4N3H stoichiometry that possesses fascinating structure and good stability in its free-standing state. More importantly, we demonstrate that this monolayer is a semimetal with anisotropic Dirac cones and very high Fermi velocity. This Fermi velocity is roughly one order of magnitude larger than the largest velocity ever reported in 2D organic Dirac materials, and it is comparable to that in graphene. The Dirac states in this monolayer arise from the extended π-electron conjugation system formed by the overlapping 2pz orbitals of carbon and nitrogen atoms. Our finding paves the way to a search for more 2D organic Dirac materials with high Fermi velocity.

关键词： Electrical properties Local density of states Spin-orbit coupling 2-dimensional systems Two-dimensional electron gas Density functional theory First-principles calculations

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A flexible system of complex surface polishing based on the analysis of the contact force and path research

A flexible system of complex surface polishing based on the ...

引用

2016 IEEE Workshop on advanced robotics and its Social Impacts, IEEE ARSO 2016

作者： Huang, Ting Li, Chuang Wang, Zhenhua Liu, Yiming Chen, Guodong Jiangsu Provincial Key Laboratory of Advanced Robotics and Collab Orative Innovation Center of Suzhou Nano Science and Technology Soocho W University Suzhou215012 China

ISBN: (纸本)9781509040773

Based on the requirement of complicated surface polishing from manufacturing automation, aiming at solving the complex and inefficient online teaching of robotic polishing system, this paper proposes a force-controlled polishing system and implements off-line programming on process path of blade polishing by robot through analyzing the deformation of the contact part between blade and buffing wheel. Finite element was used to analyze the contact part, and the blade polishing module was developed in the environment of robot studio combining the horizontal line cutting method and the Douglas-Peucker algorithm. Simulation was taken on the off-line module and the resulting file was input into the industrial robot to carry out experiments. The results show that this method had better experimental effect and faster processing efficiency. © 2016 IEEE.

关键词： robot programming

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