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Monitoring the segment parameters during long term physical training from motion capture data

Monitoring the segment parameters during long term physical ...

引用

Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Gentiane Venture Ko Ayusawa Dana Kulic Yoshihiko Nakamura Department of Mechanical System Engineering Tokyo University of Agriculture슠and슠Technology Japan Department of Mechano-Informatics University of Tokyo Japan Department of Electrical and Computer Engineering University of Waterloo Canada

The segment parameters (SP) consisting of inertia and position of the center of mass of each segment, of the human body are crucial data when one wants investigate motion dynamics. The segment parameters vary with time according to immobilization, physical training, rehabilitation, muscular diseases. This knowledge provides valuable information to support medical diagnosis and to quantify the effect of medical treatment, rehabilitation or training. However they are usually difficult to measure in-vivo for these kinds of applications and thus are not specifically used. In this paper we propose to apply a previously developed identification method in order to monitor the evolutions of those parameters over 5 months, during which the candidate followed a 16-week marathon training before running the 2009 Tokyo Marathon. The motion data is recorded on a weekly basis and the parameters are computed after each session. The obtained results are presented and the changes in body SP are discussed in the light of typical results occurring to the body fitness.

关键词： Condition monitoring Humans Biological system modeling Diseases Biomedical monitoring USA Councils Medical diagnosis Medical treatment Biomechanics Medical services

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Genetic Algorithm for optimizing cutting conditions of uncoated carbide (WC-Co) in milling machining operation

Genetic Algorithm for optimizing cutting conditions of uncoa...

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IEEE Conference on Innovative Technologies in Intelligent systems and Industrial Applications (CITISIA)

作者： Azlan Mohd Zain Habibollah Haron Safian Sharif Faculty of Computer Science & Information System Universiti Teknologi Malaysia Skudai Johor Malaysia Department of Modeling & Industrial Computing Faculty of Computer Science & Information System Universiti Teknologi Malaysia Skudai Johor Malaysia Department of Manufacturing & Industrial Engineering Faculty of Mechanical Engineering Universiti Teknologi Malaysia Skudai Johor Malaysia

This paper presents the capability of genetic algorithm (GA) technique in obtaining the optimal machining parameters for uncoated carbide (WC-Co) tool to minimize the surface roughness (R a ) value in milling process. The optimal machining parameters are generated using MATLAB optimization toolbox. Regression technique is applied to create the surface roughness predicted equation to be taken as a fitness function of the GA. Result of this study indicated that the GA technique capable to estimate the optimal cutting conditions that yields to the minimum R a value. With high speed, low feed and high radial rake angle of the cutting conditions rate, GA technique recommended 0.17533 mum as the best minimum predicted surface roughness value. Consequently, the GA technique has decreased the minimum surface roughness value of the experimental data by about 25.7%.

关键词： Genetic algorithms Metalworking machines Rough surfaces Surface roughness Machining Milling MATLAB Equations Yield estimation Feeds

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AN experimental nvestigation of flow control inside inlet ducts

AN experimental nvestigation of flow control inside inlet du...

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作者： Vaccaro, John C. Gressick, William Wen, John Amitay, Michael Mechanical Aerospace and Nuclear Engineering Rensselaer Polytechnic Institute 110 8th Street Troy NY 12180 United States Rensselaer Polytechnic Institute 110 8th Street Troy NY 12180 United States Department of Electrical Computer and System Engineering Rensselaer Polytechnic Institute 110 8th Street Troy NY 12180 United States

ISBN: (纸本)9781563479694

The present paper discusses the effect of active flow control, via steady and unsteady control jets, on the performance of a very aggressive (length to exit diameter ratio, L/D, of 1.5) inlet duct. The experiments were performed at an inlet Mach number of 0.45 in a specially designed facility, which enables testing of various actuation methodologies. Two major parameters were compared: the effect of blowing ratio (at a fixed momentum coefficient), and the actuation frequency. Although the facility is equipped with a pair of control jets (to mitigate separation on the two duct bends) only the upstream control jet was used to simplify the experiments. Steady and unsteady pressure measurements (along the lower wall of the duct, at the AIP, and in the actuator's cavity) were performed for various momentum coefficients, blowing ratios, and actuation frequencies. Flow control was shown to have a substantial effect, mainly along the centerline. The data suggest that using 2-D flow control to affect a flow field that is highly three-dimensional is not optimal, and as such a spanwise varying actuation should be implemented. In addition to the experimental effort, initial results on the optimal sensor placement and estimation of pressure recovery over a portion of the AIP are presented. Data from a two-dimensional CFD simulation is used to generate flow field data for a throat Mach number of 0.45 and several blowing input profiles on the lower surface. Results are presented for AIP estimation using both static and dynamic models, and it is shown that acceptable performance can be obtained for all values of blowing input considered here. Static and dynamic models can predict average lower AIP pressure recovery with RMS error of .05% and worst-case error of about 0.6%. Sensor placement analysis is performed by iteratively testing combinations of candidate sensor locations and tabulating them that most often are part of the combinations with least error. Copyright © 2009 by the

关键词： Flow fields

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An exterior-point approach to the fixed-order mixed H∞/D-stability controller design

An exterior-point approach to the fixed-order mixed H∞/D-st...

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International Conference on Control and Automation (ICCA)

作者： Takeshi Terada Yasushi Kami Eitaku Nobuyama Department of the Mechanical and Electronic System Engineering Akashi National College of Technology Hyogo Japan Department of the Electrical and Computer Engineering Akashi National College of Technology Hyogo Japan Department of Systems Design and Informatics Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781424447060

This paper deals with the mixed H ∞ /D-stability control problem with a fixed-order output feedback controller. It is well known that this control problem is described as a combined bilinear matrix inequality (BMI) problem whose feasible solution is difficult to be found. In this paper, we propose a new exterior-point approach for finding a feasible solution of this problem. The advantage of our approach is to be able to use a non-stabilizing controller as an initial point. Numerical examples show the efficiency of our approach.

关键词： Output feedback Automatic control Linear matrix inequalities Iterative methods Educational institutions Design automation Robust control Uncertainty Time factors computer numerical control

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A Unique Multi-functional Landmark for Autonomous Navigation

A Unique Multi-functional Landmark for Autonomous Navigation

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International Conference on Natural Computation (ICNC)

作者： Dan Wang Yunwei Jia Zuoliang Cao Tianjin Key Laboratory of Intelligent Computing & Novel Software Technology Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology China School of Mechanical Engineering Tianjin University of Technology China

ISBN: (纸本)9781424445424

To save time, improve flexibility and guarantee accuracy of the navigation system of the mobile robots, a multi-function landmark and a new navigation algorithm are proposed in this paper. With the new algorithm and landmark the mobile robots can be located by only a single landmark, and can be navigated in a large area by serial landmarks. The simple configuration and the convenient material of the landmark increased the system's flexibility and decreased the complexity of the algorithm. From the experimental results it can be concluded that the navigation system has fast navigation speed and high navigation accuracy.

关键词： Navigation Mobile robots Robot kinematics computer vision Educational technology Algorithm design and analysis Shape Intelligent robots Laboratories mechanical engineering

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Low Cost RT Process Control Using Windows PLC by MATLAB/Simulink Throw the REX Control system by Secured Wireless Network

Low Cost RT Process Control Using Windows PLC by MATLAB/Simu...

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ICONS International Conference on systems

作者： Ondrej Krejcar Petr Konarik Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Czech Republic Department of Control System and Instrumentation VSB-Technical University of Ostrava Faculty of Mechanical Engineering Ostrava-Poruba Czech Republic

Paper deals with industrial realization of feedback control of demanding applications on theirs control, control algorithms and visualization together with real time control from MATLAB/Simulink Environment. Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution.

关键词： Costs Process control Programmable control MATLAB Control systems Wireless networks Electrical equipment industry Industrial control Pulp and paper industry Feedback control

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A fixed-order D-stability controller design with an output feedback using a modified exterior-point approach

A fixed-order D-stability controller design with an output f...

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Asian Control Conference

作者： Takeshi Terada Yasushi Kami Eitaku Nobuyama Department of the Mechanical and Electronic System Engineering Advanced Courses of Akashi National College of Technology Hyogo Japan Department of the Electrical and Computer Engineering Akashi National College of Technology Hyogo Japan Department of Systems Design and Informatics Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781424454402

This paper is concerned with a D-stability controller design problem with a static or a reduced-order output feedback controller. This problem is difficult to be solved theoretically, because it consists of some bilinear matrix inequality's (BMI's). In this paper, an exterior-point approach to this problem, which produces a controller sequence approaching a feasible region from an infeasible one is proposed. The feature of our approach is to be able to use a non-stabilizing controller as an initial point of the sequence. A numerical example shows the efficiency of our approach.

关键词： Output feedback Control systems Electric variables control Linear matrix inequalities Iterative methods Educational institutions Time factors Optimization methods State feedback systems engineering and theory

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Distributed state and unknown input estimation for freeway traffic flow models 10

Distributed state and unknown input estimation for freeway t...

引用

2009 10th European Control Conference, ECC 2009

作者： Luspay, T. Kulcsar, B. Tettamanti, T. Varga, I. Bokor, J. Systems and Control Laboratory Computer and Automation Research Institute HAS Kende u. 13.-17 BudapestH-1111 Hungary Delft Center for System and Control Faculty of Mechanical Maritime and Materials Engineering Technical University of Delft Mekelweg 2 Delft Netherlands Department of Control and Transport Automation Budapest University of Technology and Economics Bertalan L. u. 2 BudapestH-1111 Hungary

ISBN: (纸本)9783952417393

The paper presents a joint state and unmeasured input estimation technique for a special class of nonlinear second order macroscopic traffic model. The freeway traffic system is transformed into a quasi and affine approximate Lin- ear Parameter Varying (LPV) form. Observer design technique is formulated using off-line optimization problem subjected to Linear Matrix Inequality (LMI) conditions, considering uncertain scheduling parameters. Furthermore, locally designed state estimators are interconnected to cover multiple freeway sections. The elaborated method is validated using real traffic measurements. © 2009 EUCA.

关键词： Linear matrix inequalities

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Remote wireless low cost RT process control using Windows PLC by MATLAB/Simulink throw the REX control system

Remote wireless low cost RT process control using Windows PL...

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IEEE GCC Conference & Exhibition

作者： Ondrej Krejcar Petr Konarik Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre of Applied Cybernetics VSB-Technical University of Ostrava Ostrava Poruba Czech Republic Faculty of Mechanical Engineering Department of Control System and Instrumentation VSB-Technical University of Ostrava Ostrava Poruba Czech Republic

Paper shows direct connection and implementation way of designed control schémas of prepared applications to an industrial WinPLC. Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution. As next benefit the application is created for visualization the data from RT database during the measurement and control process. This last benefit produce an interesting data from real control process to give a next reason to use of WinCon solution.

关键词： MATLAB Libraries Control systems Process control Real time systems Algorithm design and analysis Servers

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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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