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作者： Jakoubek, Pavel Hofreiter, Milan Bouda, Lukáš Department of Instrumentation and Control Engineering Czech Technical University Prague Faculty of Mechanical Engineering Technická 4 166 07 Praha 6 Czech Republic

ISBN: (纸本)9789549260014

Recent political and social situation in the Czech Republic results in rising requirements on modern technologies, which may lead to radical combustion emission restrictions. The financial resources, which must be invested into the above mentioned technology modernization, are limited by most of the operators and therefore there is a demand for low-cost techniques and technologies, which may help to modify the process for emission optimization. One possible technique for NOx emission reduction is so called primary measure, which can be optimized by advanced combustion control based on new modeling approaches, utilizing theory of probability. New control algorithms are implemented and proofed on G230 coal-combustion boiler in Mělník I commissioned in 1960.

关键词： Coal fired power plant

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Two microcotrollers interaction using C

Two microcotrollers interaction using C

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2nd International Conference on Computer Research and Development, ICCRD 2010

作者： Mohd Muji, Siti Zarina Rahim, Ruzairi Abdul Rahiman, Mohd Hafiz Fazalul Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Department of Control and Instrumentation Faculty of Electrical Engineering Universiti Teknolgi Malaysia 81310 Skudai Johor Malaysia

ISBN: (纸本)9780769540436

This paper studied about microcontrollers interaction using RS232 as a communication tool and C to programming the interaction. PIC18F4520 will be used in this prototype and MPLAB as a software tool. Before run it into the real hardware, some simulation must be done to make sure all the hardware connection and software writing is correct. Proteus 7.1 has been used for the simulation purpose. The result shows that interaction between microcontrollers can be done using those entire gadgets. © 2010 IEEE.

关键词： Microcontrollers

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Position tracking control of an electro-hydraulic servo system using sliding mode control

Position tracking control of an electro-hydraulic servo syst...

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2010 8th IEEE Student Conference on Research and Development - engineering: Innovation and Beyond, SCOReD 2010

作者： Ghazali, R. Sam, Y.M. Rahmat, M.F. Hashim, A.W.I.M. Zulfatman Department of Control and Instrumentation Faculty of Electrical Engineering Universiti Teknologi Malaysia Malaysia International Campus Universiti Teknologi Malaysia Jalan Semarak Malaysia

ISBN: (纸本)9781424486489

This paper evaluates the position tracking performance of an electro-hydraulic hydraulic servo (EHS) system using sliding mode control (SMC). The EHS system is established in modelling process by consider its nonlinearities with a friction model. The control strategy is derived from developed dynamics equation and stability of the control system is theoretically proven by Lyapunov theorem. Simulation results demonstrate the proposed controller is highly robust and capable to cope with the uncertainties and disturbances occur during the position tracking control. It is also shows that the proposed controller can achieve better tracking performance compared with conventional PID controller. ©2010 IEEE.

关键词： Sliding mode control

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Fuzzy Logic Based Autonomous Parallel Parking system with Kalman Filtering

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SICE Journal of control, Measurement, and system Integration 2010年第4期3卷 266-271页

作者： Benjamas Panomruttanarug Kohji Higuchi Department of Control System and Instrumentation Engineering King Mongkuts University of Technology Thonburi Department of Electronic Engineering University of Electro-Communications

This paper presents an emulation of fuzzy logic control schemes for an autonomous parallel parking system in a backward maneuver. There are four infrared sensors sending the distance data to a microcontroller for generating an obstacle-free parking path. Two of them mounted on the front and rear wheels on the parking side are used as the inputs to the fuzzy rules to calculate a proper steering angle while backing. The other two attached to the front and rear ends serve for avoiding collision with other cars along the parking space. At the end of parking processes, the vehicle will be in line with other parked cars and positioned in the middle of the free space. Fuzzy rules are designed based upon a wall following process. Performance of the infrared sensors is improved using Kalman filtering. The design method needs extra information from ultrasonic sensors. Starting from modeling the ultrasonic sensor in 1-D state space forms, one makes use of the infrared sensor as a measurement to update the predicted values. Experimental results demonstrate the effectiveness of sensor improvement.

关键词： parallel parking fuzzy logic wall following Kalman filtering

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Ultrasonic inspection system for detecting small flaws at far surface of steel plate

Ultrasonic inspection system for detecting small flaws at fa...

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7th Annual International Conference on Electrical engineering/Electronics, Computer, Telecommunications and Information Technology, ECTI-CON 2010

作者： Vilasmongkolchai, T. Noipitak, M. Kaewtrakulpong, P. Prateepasen, A. Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi Thungkru Bangkok 10140 Thailand Department of Production Engineering King Mongkut's University of Technology Thonburi Thungkru Bangkok 10140 Thailand

ISBN: (纸本)9789746724913

This paper presents the development of inspection system using ultrasonic for steel plate manufacturing. Generally, internal defects in the final product of steel plate are inspected manually by human operators, which is a time consuming process. In this research, the crystal of an ultrasonic probe at natural frequency suitable for steel plate examination was developed. In our design, high sensitivity (i.e. high signal peak amplitude) and good resolution were achieved using a (water coupling) probe structure, without ceramic wear plate, and a signal processing called the 1-bit technique. Backing material of the probe was carefully designed and experimented to obtain proper impedance matching with the probe's crystal by varying its material composition. Jig with a dual-probe support to speed up the inspection of a steel plate was implemented. Moreover, the 1-bit technique was applied to improve resolution of the inspection and to detect small flaws close to the far surface of the steel plate. The developed probe has more sensitivity than that of commercial probes in terms of frequency response. The 1-bit processing technique has been realized and simulated and it showed advantages over the conventional method for processing time and accuracy.

关键词： Probes

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Improving gas component detection of an ultrasonic tomography system for monitoring liquid/gas flow

Improving gas component detection of an ultrasonic tomograph...

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2010 6th International Colloquium on Signal Processing and Its Applications, CSPA 2010

作者： Nor Ayob, N.M. Yaacob, S. Zakaria, Z. Fazalul Rahiman, M.H. Abdul Rahim, R. Manan, M.R. Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

ISBN: (纸本)9781424471225

The development of an ultrasonic transmission tomography system is described. The system is intended for the imaging of two component flows (such as gas/water) inside pipes of industrial processes. Transmission-mode approach has been used for sensing the gas/liquid two-phase flow, which is a kind of strongly inhomogeneous medium. A prototype fixture of vertical column and a mobile prototype design of sensor's jig for ultrasonic tomography imaging are used. The fixture of the vertical column is designed to hold the sensor's jig that will have the 16-pairs of ultrasonic sensors attached to it. The investigations were based on the transmission and the reception of ultrasonic sensors that were mounted circularly on the surface of experimental vessel. This paper also explains the hardware and circuitry design for the Ultrasonic Tomography system. Detailed explanations are presented on relationship of the smallest resolution the system are able to detect with the characteristics of the installed ultrasonic sensor. © 2010 IEEE.

关键词： Ultrasonic applications

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Detection of small gas bubble using ultrasonic transmission-mode tomography system

Detection of small gas bubble using ultrasonic transmission-...

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2010 IEEE Symposium on Industrial Electronics and Applications, ISIEA 2010

作者： Ayob, Nor Muzakkir Nor Rahiman, Mohd Hafiz Fazalul Zakaria, Zulkarnay Yaacob, Sazali Rahim, Ruzairi Abdul Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

ISBN: (纸本)9781424476473

This paper presents the development of an ultrasonic transmission-mode tomography system for the detection of small gas bubble using higher frequency ultrasonic sensors. The selection of the sensors is important and must be suitable to the application design. Consideration on the natural limitation of ultrasonic wave is also noted as the higher the frequency of the ultrasonic transducer, the better the sensitivity but lower penetration depth. 16-pairs of these ultrasonic sensors are installed and fixed inside a sensor jig which is designed to hold all the sensors. The sensor jig is also mounted on the circumference of a vertical column which will be used as the investigated process vessel. The developments presented also include the non-invasive fabrication techniques, the electronic measurement circuits, image reconstruction technique, and finally on the imaging results of the proposed system. ©2010 IEEE.

关键词： Ultrasonic sensors

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Fault diagnosis of rotating machinery based on wavelet transforms and neural network

Fault diagnosis of rotating machinery based on wavelet trans...

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International Conference on Applied Electronics, AE

作者： Jan Roztočil Martin Novák Faculty of Mechanical Engineering Department of Instrumentation and Control Engineering Czech Technical University Prague Czech Republic Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Prague Czech Republic

This paper shows usage of wavelet transform for condition evaluation of the rotating machinery by processing a signal of instantaneous angular velocity. One or more machine revolutions are used for the state evaluation. Wavelet transformation is applied to form a feature vector which, transformed by a neural network into a fault vector, is used for the description of a rotating machinery condition. Results obtained with a 2 cylinder four-stroke piston diesel engine ČKD S110 are shown.

关键词： Engines Support vector machine classification Wavelet transforms Artificial neural networks Angular velocity Pistons

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Simulation of Magnetic Flux Leakage (MFL) analysis using FEMM software

Simulation of Magnetic Flux Leakage (MFL) analysis using FEM...

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2010 IEEE Symposium on Industrial Electronics and Applications, ISIEA 2010

作者： Zakaria, Zulkarnay Mansor, Muhammad Saiful Badri Jahidin, Aishah Hartini Azlan, Mohd Shuhanaz Zanar Rahim, Ruzairi Abdul Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Jejawi Arau Perlis Malaysia Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Malaysia

ISBN: (纸本)9781424476473

Magnetic flux leakage (MFL) is a method used in oil and gas piping systems which has potential in medical gas piping inspection, cleaning and gauging tasks without interrupting the pipeline transportation process. MFL is a magnetic method of nondestructive testing that applies a magnet to magnetize the steel. At areas where there is corrosion or missing metal, the magnetic field "leaks" from the steel. In this research, a system that is capable of simulating a magnetic flux leakage of different types of crack was modeled using the Finite Element Method of Magnetic (FEMM). A portion of pipelines that may contain several cracks were introduced into the software by entering all the properties needed in order to simulate the output in the magnetic field distribution and graphical representation. The disturbance in magnetic field will result in small displacement in the field. The displacement in the fields carries the actual information about the condition of the pipeline. ©2010 IEEE.

关键词： Finite element method

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Underlying system using dynamic clustering and structural similarity

Underlying system using dynamic clustering and structural si...

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2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010

作者： Hernando Colina, M. Eliezer Castañeda, M. Wladimir Rodríguez, G. Carlos Parra, O. University of Pamplona Engineering Faculty Systems Engineering Department Pamplona Norte de Santander Colombia Automation and Control Department University of Andes System School Sede la Hechicera Estado Mérida Mérida Venezuela Department of Computer Engineering Faculty System School Sede la Hechicera Estado Mérida Mérida Venezuela

ISBN: (纸本)9781424469208

we propose a new perspective on the identification of linear dynamic system using structural similarity. The proposal consists in the meaningful exploration of each model, specifically behavior of the state variable. The decomposition of the behavior of a state variable in different modes of behavior of a system, each one has a different set of weights and shows different patterns of behavior. These weights are more significant than eigenvalue to develop a new technique for identifying linear system and invariants over time. We use two methods based on different areas of knowledge such as linear algebra and statistics. This paper is a conceptual proof that enriches the implementation and validity not only from point of view algorithmic likewise physic mathematical. © 2010 IEEE.

关键词： Artificial intelligence

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