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15th Annual Conference on Advances in Autonomous Robotics systems, TAROS 2014

作者： Liang, Peidong Yang, Chenguang Wang, Ning Li, Zhijun Li, Ruifeng Burdet, Etienne Centre for Robotics and Neural Systems School of Computing and Mathematics Plymouth University United Kingdom MOE Key Lab. of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology China State Key Laboratory of Robotics and System Harbin Institute of Technology China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Department of Bioengineering Imperial College of Science Technology and Medicine London United Kingdom

ISBN: (纸本)9783319104003

This paper presents an improved method to teleoperate impedance of a robot based on surface electromyography (EMG) and test it experimentally. Based on a linear mapping between EMG amplitude and stiffness, an incremental stiffness extraction method is developed, which uses instantaneous amplitude identified from EMG in a high frequency band, compensating for non-linear residual error in the linear mapping and preventing muscle fatigue from affecting the control. Experiments on one joint of the Baxter robot are carried out to test the approach in a disturbance attenuation task, and to compare it with automatic human-like impedance adaptation. The experimental results demonstrate that the new human operated impedance method is successful at attenuating disturbance, and results similarly to as automatic disturbance attenuation, thus demonstrating its efficiency. © 2014 Springer International Publishing.

关键词： Stiffness

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Two-stage heuristic-correction for dynamic reactive power optimization based on relaxation-MPEC and MIQP

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Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering 2014年第13期34卷 2100-2107页

作者： Ding, Tao Guo, Qinglai Bo, Rui Sun, Hongbin Wu, Wenchuan Zhang, Boming Yao, Zhengyi State Key Lab. of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing 100084 China Midwest ISO St. Paul 55108 United States Baoji Power Supply Bureau Baoji 721004 Shannxi Province China

To achieve a fast approach to the dynamic reactive power optimization model, a mixed integer nonlinear programming model was set up, with consideration of the discrete reactive power equipment operation limit and power grid security constraints, to minimize the transmission losses. Furthermore, a method called heuristic search and variable correction was proposed that for the first stage, the discrete variables are relaxed into continuous ones, which leads to an optimization model with equilibrium constraints. According to the optimal value of relaxed model, a mixed integer quadratic programming model is formulated to minimize the objective of approximation variance, satisfied the discrete switching operation constraints in primary model. For the second stage, the continuous variables are redressed with respect to the determined discrete variables. The impact of adjustment step and operation limit on the optimal solution was fully studied in IEEE 14-bus test system. Besides, the result of IEEE 30, 57, 118 test systems show that an optimal solution can fast be obtained by proposed method, and the precision satisfies the actual engineering, which can also employ the parallel technology. © 2014 Chinese Society for Electrical Engineering.

关键词： Integer programming

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Communication and control co-design for wireless sensor networked control systems

Communication and control co-design for wireless sensor netw...

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World Congress on Intelligent control and Automation (WCICA)

作者： Jinna Li Peng Zeng Xuejun Zong Meng Zheng Xiaoling Zhang Lab of Operation and Control Shenyang Shenyang University of Chemical Technology Liaoning P. R. China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Liaoning P. R. China College of Information Engineering Shenyang University of Chemical Technology Liaoning P.R. China

This paper is concerned with communication and control co-design for wireless sensor networked control system (WSNCS) with time-varying delay. Jointly designing communication and control is an attractive paradigm for WSNCS, since the control performance of WSNCS is high sensitive to resource-constrained communication networks. The main idea of devised scheme is searching an optimal event-triggered transmission condition on the premise that wireless link capacity constraint is satisfied and stability of systems is guaranteed. The main aim of devised scheme is to greatly optimize control performance of WSNCS. First, two wireless network architectures characterized by multi-hop and star topology are put forward. Secondly, a model of WSNCS with event-triggered transmission mechanism is constructed. It is followed by stability analysis of WSNCS to obtain the asymptotical stability condition of systems. And then a search algorithm is presented for communication and control co-design. Finally, numerical examples are given to illustrate the effectiveness of the proposed method.

关键词： Wireless sensor networks Wireless communication networked control systems Spread spectrum communication Network topology Topology

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An analysis of Beijing HFMD patients mobility pattern during seeking treatment

An analysis of Beijing HFMD patients mobility pattern during...

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2013 International Conference for Smart Health, ICSH 2013

作者： Zhu, Zhaonan Cao, Zhidong Zeng, Daniel Dajun State Key Lab. of Intelligent Control and Management of Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9783642398438

Previous epidemiological researches have studied HFMD transmission pattern, but the study on the patients mobility pattern while seeking treatment is absent. In this paper, we present a statistical analysis of the spatialtemporal pattern of the Beijing HFMD patients mobility based on a complete works dataset containing over 40,000 cases in 2010. The main findings are as follows: (1) the patents incline to take their sick children to hospitals on weekdays, especially on Monday;(2) the patients living far from city center are more likely to get to hospitals in the afternoon, while the patients in the downtown in the morning;(3) patients (or their parents) either select the nearby hospitals, or the Class-A hospitals in the downtown. Furthermore, we employ a gravity model to describe the spatial mobility pattern of patients. The experiment results show a good fit. © 2013 Springer-Verlag.

关键词： Hospitals

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Wearable gait analysis system for ambulatory measurement of kinematics and kinetics

Wearable gait analysis system for ambulatory measurement of ...

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IEEE Sensors

作者： Guangyi Li Tao Liu Linyi Gu Yoshio Inoue Haojie Ning Meimei Han The State Key Laboratory of Fluid Power Transmission and Control Dept. of Mech. Eng. Zhejiang University 310027 Hangzhou China School of Systems Engineering Kochi University of Technology Kochi Japan INSENCO R&D LAB. INC. Tokyo Japan

ISBN: (纸本)9781479901609

A wearable gait analysis system composed of mobile six-axial force plates and multi-axial motion sensors is capable of gait analysis in non-lab.ratory environment. Triaxial ground reaction force (GRF), triaxial joint angle, joint force and joint moment for the three joints of lower limbs were extracted using the measured data. Presently, we have discussed the components of main axis of these experiment results. GRF, joint angle and joint force showed reasonable agreement with the reference system composed of an optical motion analysis system and stationary force plate (average RMSE of 5.5° and correlation coefficient of 0.94). Only the x-axial moments of ankle and hip showed relatively low consistency.

关键词： gait analysis six-axial force plate motion sensor GRF joint angle joint force joint moment

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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In Deep UV Quantitative Analysis of Multi-Element Low Alloy Steel by Laser-Induced Breakdown Spectroscopy

In Deep UV Quantitative Analysis of Multi-Element Low Alloy ...

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Winter Symposium on Photonics and Optoelectronics(W-SOPO 2013)

作者： Yong Xin Lanxiang Sun Zhibo Cong Lifeng Qi Yang Li Zhijia Yang Lab. of Networked Control Systems Shenyang Institute of AutomationChinese Academy of Sciences

The multi-element components of low alloy steel were quantified by using laser-induced breakdown spectroscopy (LIBS) in deep UV. The Nd:YAG pulsed laser was used to produce plasma. The spectrum was simultaneously obtained by deep UV spectrometer. This paper studied the influence of experiment parameters on LIBS spectral intensity, such as delay, energy of laser, and the distance between the focusing lens and the surface of the sample. With the optimal experiment parameters, the characteristic lines of C, Ni, Si, Cr and Cu contained in low alloy steel were selected for quantitative analysis and the calibration curves of these elements were obtained. The linear correlation coefficient was good. Using the calibration curves to quantitative analysis for the sample 05-d, and the relative error of analytical results is less than 10% for most elements.

关键词： Laser-Induced Breakdown Spectroscopy Plasma Quantitative Analysis Deep UV

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Comparison of Calibration Curve Method and Partial Least Square Method in the Laser Induced Breakdown Spectroscopy Quantitative Analysis

Comparison of Calibration Curve Method and Partial Least Squ...

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Winter Symposium on Photonics and Optoelectronics(W-SOPO 2013)

作者： Zhi-bo Cong Lan-xiang Sun Yong Xin Yang Li Li-feng Qi Lab. of Networked Control Systems Shenyang Institute of AutomationChinese Academy of Sciences

The Laser Induced Breakdown Spectroscopy (LIBS) is a fast, non-contact, no sample preparation analytic technology;it is very suitable for on-line analysis of alloy composition. In the copper smelting industry, analysis and control of the copper alloy concentration affect the quality of the products greatly, so LIBS is an efficient quantitative analysis technology in the copper smelting industry. But for the lead brass, the components of Pb, Al and Ni elements are very low and the atomic emission lines are easily submerged under copper complex characteristic spectral lines because of the matrix effects. So it is difficult to get the online quantitative result of these important elements. In this paper, both the partial least squares (PLS) method and the calibration curve (CC) method are used to quantitatively analyze the laser induced breakdown spectroscopy data which is obtained from the standard lead brass alloy samples. Both the major and trace elements were quantitatively analyzed. By comparing the two results of the different calibration method, some useful results were obtained: both for major and trace elements, the PLS method was better than the CC method in quantitative analysis. And the regression coefficient of PLS method is compared with the original spectral data with background interference to explain the advantage of the PLS method in the LIBS quantitative analysis. Results proved that the PLS method used in laser induced breakdown spectroscopy was suitable for simultaneous quantitative analysis of different content elements in copper smelting industry.

关键词： Laser-Induced Breakdown Spectroscopy (LIBS) Partial Least Square Method (PLS) Matrix Effects Quantitative Analysis

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Double-Pulse Remote Laser-Induced Breakdown Spectroscopy Analysis of Magnesium Alloys

Double-Pulse Remote Laser-Induced Breakdown Spectroscopy Ana...

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Winter Symposium on Photonics and Optoelectronics(W-SOPO 2013)

作者： Lifeng Qi Lanxiang Sun Zhibo Cong Yong Xin Yang Li Lab. of Networked Control Systems Shenyang Institute of AutomationChinese Academy of Sciences

A self-built double-pulse remote Laser-Induced Breakdown Spectroscopy system in a collinear configuration was used to investigate the magnesium alloys. The enhancement of the intensity was observed, about 4.7 times compared with single pulse LIBS. The peak intensities of line Y II 366.4 nm and Zr I 468.7 nm were used in the calibration curves, and the correlation coefficients were 0.9998 and 0.9547 respectively.

关键词： Double Pulse LIBS Remote Magnesium Alloys

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Double-Pulse Remote Laser-Induced Breakdown Spectroscopy Analysis of Magnesium Alloys

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Journal of Computer and Communications 2013年第7期1卷 36-39页

作者： Lifeng Qi Lanxiang Sun Zhibo Cong Yong Xin Yang Li Lab. of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences Shenyang China.

A self-built double-pulse remote Laser-Induced Breakdown Spectroscopy system in a collinear configuration was used to?investigate?the magnesium?alloys. The enhancement of the intensity was observed, about 4.7 times compared with single pulse LIBS. The peak intensities of line Y II 366.4 nm and Zr I 468.7 nm were used in the calibration curves, and the correlation coefficients were 0.9998 and 0.9547 respectively.

关键词： Double Pulse LIBS Remote Magnesium Alloys

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