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International Conference on Advances in Computational Tools for engineering Applications, ACTEA

作者： A. Asadi Ghanbari M. R. Nazari Kousarrizi M. Teshnehlab M. Aliyari Computer Department Science and Research Islamic Azad University Tehran Iran Biomedical Engineering Group Electrical Engineering Department K.N. Toosi University of Technology Tehran Iran Control Group Electrical Engineering Department K.N. Toosi University of Technology Tehran Iran Mechatronics Group Electrical Engineering Department K.N. Toosi University of Technology Tehran Iran

Brain Computer Interface (BCI) is a technology that developed over the last three decades has provided a novel and promising alternative method for interacting with the environment. BCI is a system which translates a subject's intentions into a control signal for a device, e.g., a computer application, a wheelchair or a neuroprosthesis. Electroencephalogram-based BCI has become a hot spot in the research of neural engineering, rehabilitation, and brain science. The artifacts are disturbance that can occur during the signal acquisition and that can alter the analysis of the signals themselves. Removing artifacts produced in Electroencephalogram (EEG) data by muscle activity, eye blinks and electrical noise is a common and important problem in EEG analysis. In this research, for artifact rejection, EEG data are filtered to the frequency range between 8 and 32 Hz with a butterworth band-pass filter. Finally two different structures of neural network and a support vector machine used to classify features that are extracted by Hilbert and Wavelet transform.

关键词： Brain computer interfaces Electroencephalography Band pass filters control systems Computer applications Wheelchairs Neural engineering Signal analysis Muscles Frequency

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A Robust and Accurate Method for Visual Hull Computation

A Robust and Accurate Method for Visual Hull Computation

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2009 IEEE International Conference on Information and Automation(2009年 IEEE信息与自动化国际学术会议)

作者： Peng Song Xiaojun Wu Michael Yu Wang Shenzhen Graduate School Harbin Institute of Technology518055China Division of Control and Mechatronics Engineering Shenzhen Graduate SchoolHarbin Institute of Techno Mechanical and Automation Engineering Department Chinese University of Hong KongShatinN.T.Hong Ko

A novel method for computing visual hull mesh from a sequence of silhouettes is addressed in this paper. Firstly we use genetic algorithm to estimate the bounding box of the scene object from the silhouettes. Secondly, we develop a method for computing the octree of visual hull through a new projection test strategy to determine whether a voxel locating outside, on or inside the visual hull. The projection test depends on a fact that the projection of a voxel in an image is the same as the convex hull of the projections of the cube's 8 vertices. Finally, the visual hull can be extracted from the Octree. In order to get smooth visual hull mesh, we compute the 2D distance to the silhouette, and use it to evaluate the 3D distance to the real visual hull surface. Experiments with several real data sets are presented to validate our algorithm.

关键词： Robustness Fingers control systems Service robots Robotics and automation Couplings DC motors Design automation Motion control Cleaning

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A local-dimming LED BLU driving circuit for a 42-inch LCD TV

A local-dimming LED BLU driving circuit for a 42-inch LCD TV

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International Conference on Telecommunications Energy (INTELEC)

作者： Yu-Cheol Park Hee-Jun Kim Back-Haeng Lee Dong-Hyun Shin Yu Cheol Park Intelligent Vehile Technology Research and Development Center KATECH South Korea Hee Jun Kim Back Haen Lee Department of Electronics Electrical Control and Instrumentation Engineering Hanyang University South Korea Dong Hyun Shin Department of Mechatronics Engineering Hanyang University South Korea

ISBN: (纸本)9781424424900

This paper presents an LED BLU driving circuit with a local-dimming structure. The efficiency of the proposed LED driver has been improved by parallel driving 8 serial-connected LED arrays. It employed the soft-switching boost converter topology to reduce the switching power loss of the hard switching boost converter. The soft-switching converter reveals superior ripple and efficiency. A smaller inductance can be used for the soft-switching converter contrasting to the hard-switching one and studied on an over-voltage protection circuit of the output of the driver at the no load condition.

关键词： Light emitting diodes TV Pulse width modulation converters Switching converters Pulse width modulation Light sources Energy consumption Automotive engineering Circuit topology Protection

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Mechanical modeling characterization of biological cells using microrobotics cell injection test bed

Mechanical modeling characterization of biological cells usi...

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2009 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Youhua Tan Dong Sun Wenhao Huang Control and Mechatronics Group Suzhou Research Institute of City University of Hong Kong and University of Science and Technology and China Suzhou Hong Kong China Department of Manufacturing Engineering and Engineering Management City University of Hong Kong Hong Kong China Department of Precision Machinery and Precision Instrumentation University of Science and Technology Hefei China

Mechanical properties of biological cells play an important role in regulating cellular functions. Some micromanipulation methods have been reported in the literature to measure cell mechanics, but they are either high-costly or difficultly-operated. This paper presents our approach to use microrobotic cell injection technology as the test bed to characterize the mechanical properties of biological cells, by virtue of low cost and easy operation. By extending our previous work [41], we develop a mechanical model to interpret the mechanical responses during microinjection and extract the cells properties. Both finite element analysis and microinjection experiments are performed to verify the mechanical model. It is shown that the results obtained from the proposed mechanical model agree well with that obtained from finite element analysis and the experiments. Elastic moduli of zebrafish embryos at different developmental stages are characterized. This demonstrates not only the validity of the proposed model but also the fact that the microrobotic cell injection technology combining with the mechanical model can be used to characterize the mechanical properties of biological cells.

关键词： Biological system modeling Biological cells Cells (biology) Testing Mechanical factors Microinjection Finite element methods Mechanical variables measurement Costs Performance analysis

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Robotics-mechatronics design competition in Kyushu area, Japan

Robotics-mechatronics design competition in Kyushu area, Jap...

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SICE Annual Conference

作者： Taisuke Sakaki Takanori Kiyota Hitoshi Kino Shinichi Sagara Ryuichi Oguro Shunji Moromugi Keiji Imado Hidetaka Ikeuchi Manabu Fukushima Takeshi Ikeda Kanta Aoki Nobuhiro Ushimi Department of Engineering Kyushu Sangyo University Fukuoka Japan Department of Mechanical Systems Engineering University of Kitakyushu Kitakyushu Japan Department of Intelligent Mechanical Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Control Engineering Kyushu Institute of Technology Kitakyushu Japan Department of Computer Science and System Engineering Kyushu Institute of Technology Lizuka Japan Department of Mechanical Systems Engineering Nagasaki University Nagasaki Japan Department of Architecture and Mechatronics Oita University Oita Japan Department of Media Technology Nippon Bunri University Oita Japan Department of Mechanical Engineering Kyushu University Fukuoka Japan Department of Art Kyushu Sangyo University Fukuoka Japan

We describe a unique competition based on the novel concept of robotics and mechatronics products that included evaluation of the products' engineering function and interface design. Seventy-seven students of eleven teams from seven universities in the Kyushu area participated in the competition, whose subject was ldquoHealth care, life supporting and communication or other technical aids for the elderly or *** Many of the plans presented ideas that balanced function and design, showing the results of collaboration among students studying engineering and students studying product design.

关键词： Design engineering Electronic mail mechatronics Educational institutions Senior citizens Service robots Systems engineering and theory Art Educational robots Collaborative work

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A dynamic priority strategy in decentralized motion planning for formation forming of multiple mobile robots

A dynamic priority strategy in decentralized motion planning...

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2009 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Shuang Liu Dong Sun Changan Zhu Wen Shang Control and Mechatronics Group Suzhou Research Center University of Science and Technology Suzhou China Department of Manufacturing Engineering and Engineering Management City University of Hong Kong Hong Kong China Department of Precision Machinery and Instrumentations University of Science and Technology Hefei China Suzhou Research Center City University of Hong Kong Suzhou Hong Kong China

This paper presents a new approach to formation forming of multiple mobile robots with decentralized motion planning. When the robots enter the required formation, there exists the formation-structure constraint, which causes disorder or even deadlock of the formation. A dynamic priority strategy is developed to solve the problem of the formation-structure constraint, and coordinate the robots to form the formation in a proper order. Simulations are performed on a group of mobile robots to demonstrate the validity of the proposed strategy to the formation system.

关键词： Motion planning Strategic planning Mobile robots Robot kinematics Intelligent robots Sun Collision avoidance Path planning USA Councils Interference

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A Decentralized Local Constraint Path Planner for Multiple Mobile Robots

A Decentralized Local Constraint Path Planner for Multiple M...

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2009 IEEE International Conference on Information and Automation(2009年 IEEE信息与自动化国际学术会议)

作者： Shuang Liu Dong Sun Changan Zhu Wen Shang Control and Mechatronics Group Suzhou Research Institute of City University of Hong Kong and the Uni Department of Manufacturing Engineering and Engineering Management City University of Hong KongHong Department of Precision Machinery and nstrumentations University of Science and Technology of China Suzhou Research Institute of City University of Hong Kong SuzhouP. R. China

This paper presents a decentralized motion planning methodology for multiple mobile robots. A novel three-step Local-Constraint-Path Planner (LCPP) is proposed to perform path planning for each robot while considering kinematic constraint and online implement efficiency. A priority-based strategy is employed in the planning to avoid mutual collisions amongst the robots. Simulations are performed on a group of mobile robots to demonstrate the performance of the proposed planning method.

关键词： Mobile robots Motion planning Robot kinematics Path planning Orbital robotics Collision avoidance Sun Strategic planning Robotics and automation Trajectory

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Active modeling based course control of Unmanned Surface Vehicles

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ICIC Express Letters 2009年第3期3卷 579-584页

作者： Peng, Yan Huang, Qingjiu He, Yuqing Han, Jianda State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Nanta street 114 Shenyang 110016 China School of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China Department of Mechanical and Control Engineering Tokyo Institute of Technology 2-12-1-13-11 O-okayama Meguro-ku Tokyo 152-8552 Japan

Model uncertainties and external disturbances extensively exist in UnmannedSurface Vehicle (USV) systems, which will greatly deteriorate the autonomousability. In this paper, a, new kind, of robust controller design strategy based,on active modeling technique is proposed, to attenuate the uncertaintiespre-described, in the coarse control of USV systems. Firstly, with detailed,analysis, the uncertainties are introduced, into the new-designed, coarsedynamics model by using the concept of modeling errors;Secondly, Kalman filteris used to estimate simultaneously the modeling errors, which is subsequentlyused, to design the robust controller;Finally, the new strategy is tested withrespect to the unmanned trimaran vehicles system-Tri-0601 to show thefeasibility and validity of it. ICIC International © 2009.

关键词： Kalman filters

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Aircraft Pose Recognition Using Locally Linear Embedding

Aircraft Pose Recognition Using Locally Linear Embedding

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International Conference on Measuring Technology and mechatronics Automation, ICMTMA

作者： Wenting Yuan Peng Jia Luping Wang Lin Shao School of Electronic Science and Engineering National University of Defense Technology Changsha Hunan China Department of Automatic Control College of Mechatronics and Automation National University of Defense Technology Changsha Hunan China Unit 96115 of the Chinese PLA National University of Defense Technology Changsha Hunan China

Locally linear embedding (LLE) is a prevalent manifold learning method in pattern recognition and machine learning. It preserves the intrinsic structure information of data set and has been widely applied to feature extraction and dimensionality reduction. This paper introduces LLE to aircraft pose recognition. The representative motion poses of an aircraft in the air are analyzed. Unfolding results of aircraft images in different poses show LLE has a natural connection to clustering. Moreover, we employ back propagation neural networks and nearest neighbor algorithms to classify the input samples after dimensionality reduction. Computer simulation testifies the efficiency and accuracy of LLE in aircraft pose recognition.

关键词： Aircraft Manifolds Learning systems Pattern recognition Machine learning Feature extraction Motion analysis Image motion analysis Neural networks Nearest neighbor searches

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Tool support for the design of self-optimizing mechatronic multi-agent systems

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International Journal on Software Tools for Technology Transfer 2008年第3期10卷 207-222页

作者： Burmester, Sven Giese, Holger Münch, Eckehard Oberschelp, Oliver Klein, Florian Scheideler, Peter Software Engineering Group Department of Computer Science University of Paderborn Paderborn Germany System Analysis and Modeling Group Hasso Plattner Institute University of Potsdam Potsdam Germany Control Engineering and Mechatronics University of Paderborn Paderborn Germany Heinz Nixdorf Institute University of Paderborn Paderborn Germany

Complex technical systems, such as mechatronic systems, can exploit networking as well as the computational power available today to achieve an automatic improvement of the technical system performance at run-time through self-optimization. To realize this vision, appropriate means for the design of such self-optimizing mechatronic systems are required. Well-established techniques and tools for the modeling of cognitive behavior, reflective behavior, and control behavior exist. However, to really enable self-optimization and its full potential, these different aspects have to be safely integrated in a manner that remains comprehensible to the designer. In this article, we present how this required integration has been realized at the semantic level by extending the unified modeling language (UML), and at the tool level by integrating the CAE tool CAMeL and the CASE tool Fujaba real-time tool suite. The presented Mechatronic UML approach supports the design of verifiable, complex, reconfigurable mechatronic systems using the multi-agent system metaphor. © Springer-Verlag 2008.

关键词： Multi agent systems

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