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Annual Conference on IEEE Industrial Electronics Society

作者： Ivo Herman Pavel Vaclavek Department of Control and Instrumentation Faculty of Electrical Engineering and Communications Brno University of Technology

ISBN: (纸本)9781467324199

Knowledge of the exact characteristics of a motor is necessary for a high-performance electrical drive control. It is useful to obtain not only the states of electrical and mechanical variables, but also other quantities. Two of the unknown parameters are the moment of inertia and the load torque. This paper addresses theoretical aspects of conditions, on which these quantities are simultaneously observable. Both asynchronous and synchronous drives are considered. The conditions are verified by a simulation and by real-motor data. Obtained results prove the possibility of their sensorless estimation. Some difficulties of the state estimation when controllers are saturated are shown.

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Design and manufacture an ultrasonic dispersion system with automatic frequency adjusting property

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Sensors and Transducers 2011年第3期126卷 52-63页

作者： Rahim, Herlina Abdul Bargoshadi, Javad Abbaszadeh Sarrafi, Sahar Abdul Rahim, Ruzairi Department of Control and Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Malaysia

This paper a novel ultrasonic dispersion system for the cleaning application or dispersing of particles which are mixed in liquid has been proposed. The frequency band of designed system is 30 kHz so that the frequency of ultrasonic wave sweeps from 30 kHz to 60 kHz with 100 Hz steps. One of the superiority of manufactured system in compare with the other similar systems which are available in markets is that this system can transfer the maximum and optimum energy of ultrasonic wave inside the liquid tank with the high efficiency in the whole of the usage time of the system. The used ultrasonic transducers in this system as the generator of ultrasonic wave is the type of air coupled ceramic ultrasonic piezoelectric with the nominal maximum power 50 Watt. The frequency characteristic of applied piezoelectric is that it produces the maximum amplitude of ultrasonic wave on the resonance frequency, so this system is designed to work on resonance frequency of piezoelectric, continuously. This is done by the use of control system which is consisted of two major parts, sensing part and controlling part. The manufactured ultrasonic dispersion system is consisted of 9 piezoelectrics so that it can produce 450 watt ultrasonic energy, totally. The main purpose of this project is to produce a safety system especially for fatigue car driver so as to prevent from accidents. The statistic on road fatality shows that human error constitute of 64.84 % road accidents fatality and 17.4 % due to technical factors. These systems encompassed the approach of hand pressure applied on the steering wheel. The steering will be installed with pressure sensors. At the same time these sensors can be used to measure gripping force while driving. © 2011 IFSA.

关键词： Natural frequencies

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Experimental Verification of High-Speed Permanent Magnet Synchronous Motor Model

Experimental Verification of High-Speed Permanent Magnet Syn...

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International Conference on Electrical Machines

作者： Martin Novak Jaroslav Novak Jan Chysky Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Czech Technical University in Prague Prague Czech republic

ISBN: (纸本)9781467301435

This paper presents the development and experimental verification of a high-speed permanent magnet motor simulation model. The used motor has maximal speed 42000 RPM, nominal speed 25000 RPM, nominal torque 1,2 Nm and nominal current 11 A. The verification is based on the motor start-up and spin down measurement. Specific issues of high-speed machines like modeling of air friction are addressed. The achieved results show a good agreement between the modeled and experimental results.

关键词： Experimental Verification igh-Speed Permanent Magnet ynchronous Motor Model

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Discrete-Time PIDA controller Designed by Kitti's Method with Bilinear Transform

Discrete-Time PIDA Controller Designed by Kitti's Method wit...

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International Conference on control, Automation and systems

作者： Krit Smerpitak Prapart Ukakimaparn Thanit Trisuwannawat Prapaisri La-orsri Department of Instrumentation and Control Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang (KMITL) Graduate Studies Division Faculty of Engineering KMITL

ISBN: (纸本)9781467322478

This paper presents a new method for designing the PIDA (Proportional-Integral-Derivative-Acceleration) controller for a third order system. Just changing of the discretization from Zero Order Hold (ZOH) to Bilinear Method, the results from simulations shown that all desired specifications can easily met with better than usual by changing only one parameter.

关键词： Discrete-Time PID -PD -PIDA controller Root locus Technique

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Experimental Smart Grid

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IFAC Proceedings Volumes 2012年第7期45卷 416-419页

作者： F. Zezulka O. Sajdl Z. Bradac J. Sembera Brno University of Technology Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Kolejní 2906/4 Brno 612 00 Czech Republic CVVOZE - Centre for Research and Utilization of Renewable Energy Brno CZ CEITEC - Central European Institute of Technology Brno CZ

The paper deals with activities towards a design of a methodology to stabilize already existing electrical grids and at the same time utilize the maximum of electrical energy from renewable electrical energy sources. The authors believe that the first step towards a methodology is to create a thorough model of the electrical grid with connecting most suitable existing renewable as well as classic electric energy sources. There is also described an idea of an experimental smart grid, but the main attention is given to the physical realization of a laboratory model of the smart grid. The authors described an electronic design and an idea of control strategy to enhance a functionality, stability and effectiveness of the grids with a significant share of the renewable energy sources.

关键词： smart grid SCADA energy monitoring modeling optimal control

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Active Force with Fuzzy Logic control of a Two-Link Arm Driven by Pneumatic Artificial Muscles

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Journal of Bionic engineering 2011年第4期8卷 474-484页

作者： H. Jahanabadi M. Mailah M. Z. Md Zain H. M. Hooi Department of System Dynamics and Control Faculty of Mechanical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Skudai Johor Malaysia

In this paper, the practicality and feasibility of Active Force control （AFC） integrated with Fuzzy Logic（AFCAFL） applied to a two link planar arm actuated by a pair of Pneumatic Artificial Muscle （PAM） is investigated. The study emphasizes on the application and control of PAM actuators which may be considered as the new generation of actuators comprising fluidic muscle that has high-tension force, high power to weight ratio and high strength in spite of its drawbacks in the form of high nonlinearity behaviour, high hysteresis and time varying parameters. Fuzzy Logic （FL） is used as a technique to estimate the best value of the inertia matrix of robot arm essential for the AFC mechanism that is complemented with a conventional Propor- tional-Integral-Derivative （PID） control at the outermost loop. A simulation study was first performed followed by an experi- mental investigation for validation. The experimental study was based on the independent joint tracking control and coordinated motion control of the arm in Cartesian or task space. In the former, the PAM actuated arm is commanded to track the prescribed trajectories due to harmonic excitations at the joints for a given frequency, whereas for the latter, two sets of trajectories with different loadings were considered. A practical rig utilizing a Hardware-In-The-Loop Simulation （HILS） configuration was developed and a number of experiments were carried out. The results of the experiment and the simulation works were in good agreement, which verified the effectiveness and robustness of the proposed AFCAFL scheme actuated by PAM.

关键词： pneumatic artificial muscle active force control fuzzy estimator hardware-in-the-loop simulation

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Unconstrained Measurement system for Scratching by Limb and Estimation of Scratching Area

Unconstrained Measurement System for Scratching by Limb and ...

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International Conference on Intelligent Computational systems(ICICS’2012);International Conference on Mechanical,Automotive and Materials engineering(ICMAME’2012);International Conference on Electronics,Biomedical engineering and its Applications(ICEBEA’2012);International Conference on Ecological,Environmental and Biological Sciences(ICEEBS’2012);International Conference on Business,Economics,Management and Behavioral Sciences (ICBEMBS’2012);International Conference on Applied Mathematics and Pharmaceutical Sciences(ICAMPS’2012)

作者： Toshihiro.Shino Yosuke.Kurihara Syoko.Nukaya Kajiro.Watanabe Hiroshi.Tanaka the Graduate School of Hosei University the Dept. of Computer and Information Science Faculty of Science and Technology Seikei University the Division of Advanced Therapeutical Sciences Tokyo Medical and Dental University the System Control Engineering Department Faculty of Engineering Hosei University the University Center for Information Medicine Tokyo Medical and Dental University

This paper describes an unconstrained measurement system for scratching motion. We have proposed an unconstrained bed monitoring system by piezoceramic sensors that could detect heartbeat respiration and body movement. The system could measure the bed vibrations due to the motion of the person on the bed. In this paper, we apply this unconstrained bed sensing method to the system for detecting scratching motion. The proposed sensors are placed under the bed feet. When the subject is lying on the bed, the output signals from the sensors are proportional to the magnitude of the vibration due to the body movement of the subject. Hence, it is possible to detect the subject's scratching motion from the output signals. Furthermore, also with output signals from the three ceramic sensors, the proposed system can detect the direction of the body movement, which enables us to estimate the scratched area. We evaluated three scratching motions using the proposed system in the validity experiment as follows: Case 1 is the subject's scratching the right cheek with right hand;Case 2 is the subject's scratching the back after turning over, and;Case 3 is the subject's scratching the shin with another foot. As the results of the experiment, we identified the scratching signals that enable the determination when the scratching occurred. Furthermore, the difference among the amplitudes of the output signals enabled us to estimate where the subject scratched.

关键词： body movement, itchy, piezoceramics, scratching unconstrained bed monitoring.

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Inhomogeneous mass flow rate measurement of solid particles using a single electrostatic sensor

Inhomogeneous mass flow rate measurement of solid particles ...

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International Conference on Electrical, control and Computer engineering

作者： Rahmat, Mohd Fua'ad Bin Tajdari, Teimour Department of Control and Instrumentation Engineering Faculty of Electrical Engineering UTM Skudai 81310 Johor Malaysia

ISBN: (纸本)9781612842288

The development of reliable, cost effective and high accuracy instrument to mass flow rate measurement is becoming increasingly important in many industries. Appropriate measurement method and design leads to improvement of pneumatic conveyors operation and process efficiency. This paper present an instrument design based on passive charge detection using a single electrostatic sensor. A time domain signal processing algorithm is developed to measurement of mass flow rate from acquired electrical charge signal. The findings is led to a low cost and high accuracy design, the experimental test results of the design shows less than ±5% error between measured mass flow rate and reference reading acquired from the manual weighing. © 2011 IEEE.

关键词： Electrostatics

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Application of transmission-mode ultrasonic tomography to identify multiphase flow regime

Application of transmission-mode ultrasonic tomography to id...

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International Conference on Electrical, control and Computer engineering

作者： Abdul Wahab, Y. Ahmad, M.A. Abdul Rahim, R. Fazalul Rahiman, M.H. Control and Instrumentation Research Group Faculty of Electrical and Electronics Engineering Universiti Malaysia Pahang Pahang Malaysia Department of Control and Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia

ISBN: (纸本)9781612842288

This paper presents an application of ultrasonic tomography where the main objective is to identify the multiphase flow regime which is liquid, gas and solid at once. The system was designing non-invasively by using offline method. The transmission mode with fan shaped beam back projection had been implemented for sensing purposes where 8x8 projections were produced. Beside, the linear back projection (LBP) algorithm was implemented in the software system for the image reconstruction part. Experiments show that the multiphase flow regime for liquid, gas and solid at once can be identifying by using ultrasonic tomography. The results of experiments and possible future improvement were also discussed. © 2011 IEEE.

关键词： Multiphase flow

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Bidirectional best first based autonomous parallel parking system

Bidirectional best first based autonomous parallel parking s...

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International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology

作者： Vorashompoo, Amorn Panomruttanarug, Benjamas Higuchi, Kohji Faculty of Engineering Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Bangkok 10140 Thailand Department of Electronic Engineering University of Electro-Communications Tokyo 182-8585 Japan

ISBN: (纸本)9781457704246

One of the major difficulties with an autonomous reverse parallel parking is how to find a trajectory of travel from start to goal without any collision. In this paper, a bidirectional search is suggested to find the shortest pathway from an initial vertex to a goal vertex in a directed graph, implying that the initial and goal states must be known in advance. In each step for searching, there are three possible nodes generated from the configuration space (or C-space), that the algorithm must decide to traverse to based on a best first search algorithm. Giving a start and goal points, the designed path is obtained by simulation in MATLAB. The experimental results show an ability to perform a parking maneuver using the simulated path. © 2011 IEEE.

关键词： MATLAB

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