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7th IFAC Symposium on Robust control Design, ROCOND'12

作者： Zuo, Zhiqiang Chen, Yinping Wang, Yijing Chen, Michael Z.Q. Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China Department of Mechanical Engineering University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)9783902823038

The problem of reachable set estimation for linear systems subject to both time delay and polytopic uncertainties is considered in this paper. Our aim is to find a set as small as possible to bound the states starting from the origin by inputs with peak values. The Lyapunov-Krasovskii functional together with free-weighting matrix technique are proposed to derive some sufficient conditions for the existence of an ellipsoidal bound to estimate the states. This method eliminates the conservatism generated by Jensen's inequality and obtains a much tighter reachable set bound. In addition, the number of variables to be determined is smaller than the previous result based on the maximal Lyapunov functional. Finally, an example illustrates the merits of our proposed results. © 2012 IFAC.

关键词： Linear systems

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Testing equipment for the research of traction battery cells

Testing equipment for the research of traction battery cells

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2012 13th International Carpathian control Conference, ICCC 2012

作者： Tomčík, Petr Čech, Radim Kulhánek, Jiří Škuta, Jaromír Department of Vehicle Materials and Technologies Faculty of Metallurgy and Materials Engineering VŠB-TU Ostrava Czech Republic Department of Control Systems and Measurement Faculty of Mechanical Engineering VŠB - TU Ostrava Czech Republic

ISBN: (纸本)9781457718687

This paper describes the current state of development of the testing and measuring equipment called StudentCar BatteryStand at the department of vehicle materials and technologies. The article describes the conceptual solution of BatteryStand and provides wiring diagrams. It also mentions the measured discharge characteristics of the batteries, which experimentally verified the designed battery stand's functionality. © 2012 IEEE.

关键词： Secondary batteries

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Modal analysis of car frame by MEMs accelerometr digital network

Modal analysis of car frame by MEMs accelerometr digital net...

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2012 13th International Carpathian control Conference, ICCC 2012

作者： Tomčík, Petr Juránek, Martin Kulhánek, Jiří Department of Vehicle Materials and Technologies Faculty of Metallurgy and Materials Engineering VŠB-TU Ostrava Czech Republic Department of Control Systems and Measurement Faculty of Mechanical Engineering VŠB - TU Ostrava Czech Republic

ISBN: (纸本)9781457718687

This paper is focused on testing vehicle frame assist in experimental modal analysis. For analysis we will use data from net of three axis MEMS accelerometers. Net of sensors is connected by CAN bus. This measure system can work during ride of vehicle, it means that is enable analyze process instant during ride on road. © 2012 IEEE.

关键词： Accelerometers

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Realtime application core for multiaxial dynamic testing

Realtime application core for multiaxial dynamic testing

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2012 13th International Carpathian control Conference, ICCC 2012

作者： Tomčík, Petr Kulhánek, Jiří Department of Vehicle Materials and Technologies Faculty of Metallurgy and Materials Engineering VŠB-TU Ostrava Czech Republic Department of Control Systems and Measurement Faculty of Mechanical Engineering VŠB - TU Ostrava Czech Republic

ISBN: (纸本)9781457718687

The aim of paper is focused on principle and architecture of real time application core for dynamic multiaxial testing on hydraulic platform. There is used an approach with HW and SW from Nationall Instrument (the real-time PXI platform and LabView development SW). In the paper will be presented internal architecture of SW and HW for real-time 12 parallel control loops. © 2012 IEEE.

关键词： Memory architecture

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A preliminary study on development of a novel optical instrument for non-invasive blood alcohol measurement: Proposal of pulse alcometry

Transactions of Japanese Society for Medical and Biological ...

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Transactions of Japanese Society for Medical and Biological engineering 2012年第2期50卷 237-247页

作者： Yamakoshi, Takehiro Ogawa, Mitsuhiro Matsumura, Kenta Itasaka, Yuki Miyazaki, Shinpei Yamakoshi, Yasuhiro Rolfe, Peter Hirose, Hajime Yamakoshi, Ken-Ichi Graduate School of Natural Science and Technology Kanazawa University Japan School of Mechanical Engineering College of Science and Engineering Kanazawa University Japan Yu.sys Corporation Japan Department of Automatic Measurement and Control Harbin Institute of Technology Japan Department of Business Administration Kinjo College Japan

In this preliminary study, we examined in human volunteers the performance of the developed prototype device for non-invasive quantification of blood alcohol concentration (BAC) by near-infrared light which is highly transparent to the body. We aimed at applying the results to the final goal of developing a novel alcohol-based vehicle ignition-interlock device. Accumulating evidence shows that one of the ethyl alcohol absorption peaks in the near-infrared region is present at 1,185 nm. We combined this with our recent development of a non-invasive optical method for blood glucose measurement, which we call pulse glucometry, using blood volume pulsations in a finger within a cardiac cycle. Thus, we developed a novel method, pulse alcometry, for non-invasive measurement of BAC. We calculated second derivative values of optical density (ODλ") to remove baseline over a band including three wavelengths, 1,150 nm, 1,185 nm, and 1,220 nm. Then, a simple linear regression analysis was performed with the measured ODλ" to predict BAC levels. In 3 healthy male volunteers, during alcohol intake and washout, periodic optical measurements using the present device were made simultaneously with collection of blood samples for in vitro BAC analysis. In leave-one-out cross validations within an individual, the measured BAC and the predicted BAC correlated well (r = 0.773~0.846, mean absolute error = 0.134~0.333mg/ml). We conclude that, from the results of this preliminary study, the new method appears to be able to estimate BAC levels non-invasively. However, further investigations in a larger group of subjects will be needed in order to determine fully the operational performance of this new measurement system.

关键词： Regression analysis

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Statistical theory and applications of lock-in carrierographic image pixel brightness dependence on multi-crystalline Si solar cell efficiency and photovoltage

Statistical theory and applications of lock-in carrierograph...

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作者： Mandelis, Andreas Zhang, Yu Melnikov, Alexander Mechanical and Industrial Engineering University of Toronto Toronto ON M5S 3G8 Canada Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150001 China

A solar cell lock-in carrierographic image generation theory based on the concept of non-equilibrium radiation chemical potential was developed. An optoelectronic diode expression was derived linking the emitted radiative recombination photon flux (current density), the solar conversion efficiency, and the external load resistance via the closed- and/or open-circuit photovoltage. The expression was shown to be of a structure similar to the conventional electrical photovoltaic I-V equation, thereby allowing the carrierographic image to be used in a quantitative statistical pixel brightness distribution analysis with outcome being the non-contacting measurement of mean values of these important parameters averaged over the entire illuminated solar cell surface. This is the optoelectronic equivalent of the electrical (contacting) measurement method using an external resistor circuit and the outputs of the solar cell electrode grid, the latter acting as an averaging distribution network over the surface. The statistical theory was confirmed using multi-crystalline Si solar cells. © 2012 American Institute of Physics.

关键词： Pixels

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RoboGas Inspector - A Mobile Robotic System for Remote Leak Sensing and Localization in Large Industrial Environments: Overview and First Results

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IFAC Proceedings Volumes 2012年第8期45卷 33-38页

作者： Samuel Soldan Gero Bonow Andreas Kroll University of Kassel Faculty of Mechanical Engineering Department of Measurement and Control Mönchebergstraβe 7 34125 Kassel Germany

In order to automate the routine inspections in large industrial environments a mobile robotic system is being developed in the project RoboGas Inspector . The robot's sensor-head consists of different instruments for remote sensing using multiple measurement principles. First results show that passive IR-thermographic imaging can be used to detect leaks in pipes as well as liquid spills on the ground. The measurable effects are the temperature profile disturbance due to expansion of pressured gas and evaporative cooling, respectively. Tunable Diode Laser Absorption Spectroscopy (TDLAS) measurement systems provide for quantitative gas concentration measurements and feature a high sensitivity due to the active measurement principle. On the contrary, TDLAS systems measure just the concentration along a path at a time and require a diffusely reflecting background. Using a Pan-Tilt Unit, objects/areas can be scanned and abnormal gas concentrations can be identified. This contribution introduces the project RoboGas Inspector and presents the used measurement technology as well as first results.

关键词： Service robotics industrial inspection remote leak detection TDLAS thermography

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On identification of piecewise-affine models for systems with friction and its application to electro-mechanical throttles

On identification of piecewise-affine models for systems wit...

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Universite Libre de Bruxelles

作者： Ren, Z. Kroll, A. Sofsky, M. Laubenstein, F. Measurement and Control Department Faculty of Mechanical Engineering University of Kassel Mönchebergstraße 7 D-34125 Kassel Germany Tools and Processes Department Diesel Engines Division Powertrain Mechatronis IAV GmbH D-38518 Gifhorn Germany

ISBN: (纸本)9783902823069

Once dynamic process models are available, model-based analysis, design and testing methods for Hardware-in-the-Loop (HiL) simulation in context of developing motor control functions in automotive applications can be applied. For Hardware-in-the-Loop (HiL) simulation, a high-precision model is required. In this paper, a clustering-based identification method for piecewise-affine (PWA) models for systems with friction is presented that utilizes open-loop recorded data. The method is demonstrated with two industrial electro-mechanical throttles. © 2012 IFAC.

关键词： Friction

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New Criteria of Reachable Set Estimation for Time Delay Systems Subject to Polytopic Uncertainties

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IFAC Proceedings Volumes 2012年第13期45卷 231-235页

作者： Zhiqiang Zuo Yinping Chen Yijing Wang Michael Z.Q. Chen Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 P. R. China Department of Mechanical Engineering The University of Hong Kong Hong Kong

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A Tighter Reachable Set Bound for Linear Systems Subject to both Discrete and Distributed Delays

A Tighter Reachable Set Bound for Linear Systems Subject to ...

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IEEE Annual Conference on Decision and control

作者： Zhiqiang Zuo Youhua Fu Yijing Wang Chanying Li Michael Z. Q. Chen Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Academy of Mathematics and Systems Science Chines Academy of Sciences Department of Mechanical Engineering The University of Hong Kong

ISBN: (纸本)9781467320658

The problem of reachable set bounding for a class of linear systems subject to both discrete and distributed delays is addressed in this paper. First, a new criterion is derived to give an ellipsoid which bounds all the states starting from the origin by inputs with peak-values. The constraint with a special structure that appeared in our previous result is removed by combining the Jensen integral inequality and the reciprocally convex approach. In addition, the obtained condition brings a tighter reachable set estimation with lower computational complexity. We also extend the above result to systems with polytopic uncertainties. Finally, an example is presented to illustrate the merit of our proposed method.

关键词： delay distribution Linear system discrete element Ellipsoid complexity classes Bound Set (Psychology)

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