Automatyka
Loading...
ISSN 1429-3447
e-ISSN: 2353-0952
Issue Date
2010
Volume
T. 14
Number
Nr 1
Description
Journal Volume
Automatyka
T. 14 (2010)
Projects
Pages
Articles
Sound recognition of musical instruments with application of FFT and K-NN classifier with cosine distance
(Wydawnictwa AGH, 2010) Głowacz, Adam; Głowacz, Witold; Głowacz, Andrzej
Paper presents a new implementation of methods of recognition of musical instruments based on FFT and K-NN classifier with cosine distance. Investigations were carried out for sounds of piano and sounds of bells. Results of investigations show that efficiency of the applied algorithms is very high.
Applying of security mechanisms to low layers of OSI/ISO network model
(Wydawnictwa AGH, 2010) Kołodziejczyk, Marcin
This article describes security mechanisms used by Data Link and Network layers in OSI/ISO network model. Most of protocols for these layers were designed with assumption that there are no intruders, that every device in the network should trust to other devices. Some basic level of trust is necessary, but if this level is too high, standard protocols may be abused. Article classifies some vulnerabilities and network threads. This paper is also an attempt to create some basic rules and requirements which should be met by secure network protocols.
Optimization of distributed hyperbolic systems with multiple time delays given in the integral form
(Wydawnictwa AGH, 2010) Kowalewski, Adam
In this paper optimal control problems for hyperbolic systems in which different multiple time delays appear in the integral form both in the state equations and in the boundary conditions are considered. Necessary and sufficient conditions of optimality for the Neumann problem are derived. The optimal boundary control is obtained in the feedback form. Making use of the results of Schwartz, the representation of the optimal feedback boundary control is given.
Konstrukcja regulatora rozmytego w środowisku labVIEW dla suwnicy 3D
(Wydawnictwa AGH, 2010) Kuck, Robert; Pauluk, Mariusz
The paper presents a fuzzy controller, designed and built in the labVIEW environment. The controller is dedicated for the tower crane laboratory model. Its aim is to transport a suspended payload in a save way. All oscillations of the payload (caused by the crane movement as well as disturbances) should be dumped. The controller is realized with the labVIEW toolkits: Fuzzy Logic Toolkit, PID Control Toolkit. For construction purposes a typical Mamdani type fuzzy controller has been chosen. It is assumed, a structure of the controller is separated. So, the controller contains: three position fuzzy controllers type P, each for axes: x, y and z and two ones type PD minimizing the payload fluctuation.
Modelowanie wielowymiarowych wyrażeń w języku MDX
(Wydawnictwa AGH, 2010) Mazur, Łukasz
The article describes the technique of query modeling for analytical models, using the language of multidimensional expressions (MDX). It is the supporting tool to the all manner of complex query in data cubes. Article include also the description of functions which works on member sets and authors examples of each solutions. All talked aspects of language makes it very useful tool for support analysis in creating complicated reports on large constructional complexity.