Over the past two decades, composite materials are kind of central to most aspects of the industry thanks to, among others, their light weight, strength and stiffness. This paper addresses the temperature control of a...
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Over the past two decades, composite materials are kind of central to most aspects of the industry thanks to, among others, their light weight, strength and stiffness. This paper addresses the temperature control of a multivariable industrial furnace destined to manufacture large composite pieces. An accurate and homogeneous control of the temperatures involved is essential to guarantee the cured product quality and to meet the industrial requirements. A Multi-Input Multi-Output (MIMO) robust compensator able to govern the furnace temperature despite the disturbances (exothermic reactions) and loop interactions are developed in this work. The MIMO methodology for the nondiagonal controller design is based on the Quantitative Feedback Theory (QFT).
This paper presents Distance Learning Platform used by Institute of Electronics Silesian University of Technology. Platform is based on modular object-oriented dynamic learning environment named Moodle. Moodle is an o...
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This paper presents Distance Learning Platform used by Institute of Electronics Silesian University of Technology. Platform is based on modular object-oriented dynamic learning environment named Moodle. Moodle is an open source e-learning platform. Currently Moodle is used by 6300 sites from 136 countries. Moodle represents LMS (Learning Management Systems) technology, a software package designed to help educators create quality online courses. Currently Institute of Electronics has created 70 online courses designed for Electronics and Telecommunications students. Number of Distance Learning Platform users exceeds 2400. Distance Learning Platform works as typically asynchronous e-learning service, but in the future more synchronous e-learning services will be added.
This paper deals with the problem of identification and semiactive control of smart structures subject to unknown external disturbances such as earthquake, wind, etc. The experimental setup used is a 6-story test stru...
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This paper deals with the problem of identification and semiactive control of smart structures subject to unknown external disturbances such as earthquake, wind, etc. The experimental setup used is a 6-story test structure equipped with shear-mode semiactive magnetorheological actuators being installed in WUSCEEL. The experimental results obtained have verified the effectiveness of the proposed control algorithms.
Background subtraction is a widely used paradigm to detect moving objects in video taken from a static camera and is used for various important applications such as video surveillance, human motion analysis, etc. Vari...
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The data set of batch biological and biotechnological processes can be organized in a three-way data matrix. In this paper the usefulness of different PCA approaches for monitoring is analyzed. Different ways of unfol...
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In medical diagnosis doctors must often determine what medical tests (e.g., X-ray, blood tests) should be ordered for a patient to minimize the total cost of medical tests and misdiagnosis. In this paper, we design co...
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This paper deals with the use of the Chebyshev-Padé approximation (CP) in order to achieve accurate direct discrete-time approximations to the fractional-order differentiator/integrator. It is shown how, for a gi...
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This paper deals with the use of the Chebyshev-Padé approximation (CP) in order to achieve accurate direct discrete-time approximations to the fractional-order differentiator/integrator. It is shown how, for a given order of the transfer functions, CP is much more accurate at low frequencies than the continued fraction expansion (CFE). Furthermore, CP can be more accurate than a CFE approximation of a higher order.
The growth in embedded systems applications and sophistication increased the need for rapid development and modeling of embedded processors. Embedded processors are usually application specific. This causes the strong...
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ISBN:
(纸本)1424402719;1424402727
The growth in embedded systems applications and sophistication increased the need for rapid development and modeling of embedded processors. Embedded processors are usually application specific. This causes the strong need for modeling environments that can be used for rapid generation of detailed micro-architecture processor simulators. However, existing simulation tools in this category are far less mature and mostly commercial. This paper presents a generic cycle-accurate micro-architecture simulation framework for embedded processors. The framework is designed to generate an RTL (register transfer level) cycle accurate simulator. The framework is built in Java to provide features like extensibility, ability to be changed easily and platform independence. It provides the above features while being as fast as most known available frameworks. The paper uses ARM1022E as an example for embedded processors due to its wide range of applications like modems, cellular phones and automobiles. It simulates its two instruction set architectures (ISA): ARM (32-bit ISA) and THUMB (16-bit ISA). The paper verifies the framework by comparing the ARM simulator with ARMulator (from ARM Ltd.). It also compares the current simulation speed with available known frameworks. Lastly, the paper provides a study of ADPCM (adaptive differential pulse code modulation) decode performance on the ARM1022E processor using the framework
This article presents an analysis of how pulses in the long two-conductor coupled lines with conductor screened interact mutually. The interaction of pulses appears in those places of the line, where there is a change...
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This article presents an analysis of how pulses in the long two-conductor coupled lines with conductor screened interact mutually. The interaction of pulses appears in those places of the line, where there is a change of wave impedance causing a change in reflection coefficient for pulses moving along the line. An exemplary analysis is performed for a homogenous lossless line at its starting and terminal points. The results of analysis are analytical expressions describing quantitative interactions of pulses. The expressions are verified both by computer simulation and by measurements of the real line. There has been performed the analysis of influence of the resistances with which the terminal points of the line are loaded onto the amplitude value of the pulses registered at the starting point of the line. The new method and the new system of measurements of pulses have been proposed that minimize the interaction of pulses at the starting point of the line, disadvantageous for the process of fault location by using pulse method.
The paper presents regulation characteristics that fulfill the requirements of highest possible efficiency and strongly reduced torque ripple level. For switched reluctance motors it is not so simple and obvious, beca...
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The paper presents regulation characteristics that fulfill the requirements of highest possible efficiency and strongly reduced torque ripple level. For switched reluctance motors it is not so simple and obvious, because the regulation characteristics depend on three variables: phase voltage, switch-on and switch-off angles. For this reason in a steady state the same operation point (Tl, ω) of the mechanical characteristic is attainable for quite different values of those control parameters. So there is a field for quasi-optimal operation and the choice of the coresponding control parameters is the main subject of this work. The paper presents also the method to determine these quasi-optimal control characteristics from simple tests or from computations based on presented simple mathematical model.
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