Begell House Inc.
Journal of Automation and Information Sciences
JAI(S)
1064-2315
36
2
2004
Algorithms and Outcomes of Researches of Flow in Wind Tunnels of Low Speed
1-11
10.1615/JAutomatInfScien.v36.i2.10
Valeriy P.
Zinchenko
National Technical University of Ukraine "Kyiv Polytechnical Institute", Ukraine
The algorithms and outcomes of experimental researches of quality of flow in industrial wind tunnels of low speed are adduced. The quality of flow was investigated from the point of view of estimation of characteristics of accuracy, operation speed and reliability of information-measuring systems in range of pressures, which take place on a surface of models of aircrafts.
Determination of Attitude by means of a Global Positioning System (GPS)
12-21
10.1615/JAutomatInfScien.v36.i2.20
Konstantin I.
Naumenko
Institute of Mathematics of National Academy of Sciences of Ukraine, Kiev
We propose a new method of solving the problem of determination of attitude by means of satellite radio navigation system GPS (Global Positioning System). Minimization of the generally accepted objective function is reduced to solving of the generalized Wahba problem. We propose iterative high-converging algorithm for determination of the quaternion, which defines object attitude. Application of the method is shown on results of simulation.
Calibration of Onboard Dataware Complex of Spacecraft for Earth Surface Imaging
22-37
10.1615/JAutomatInfScien.v36.i2.30
Dmitriy V.
Lebedev
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kyiv
Alexander I.
Tkachenko
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kyiv
High accuracy of determining the imaging camera attitude is a necessary condition of obtaining the Earth surface high-quality snap-shots from the space. In order to ensure such accuracy parameters of mutual attitude of camera, units and subsystems of onboard measuring complex must be known. In this work it is shown how above-mentioned parameters can be found by means of assigned landmarks observation. In so doing the camera itself is used as a sensor.
System Analysis and Multicriteria Estimation of Space Projects by Expert Methods
38-50
10.1615/JAutomatInfScien.v36.i2.40
Albert N.
Voronin
National Aviation University of Ukraine,
Kiev
A problem of multicriteria estimation of space projects by the expert estimates method is studied. The concept of embedded scalar convolutions of vector criterion is used. A method of analytic and qualitative estimates is described. A technique of visualization ("project profile") is explained.
Analysis of Variables and Parameters of Genetic Algorithms for Production Process Planning
51-56
10.1615/JAutomatInfScien.v36.i2.50
Tadeush
Witkowski
Warsaw University, Poland
Soliman
Elzway
Warsaw Polytechnical Institute, Poland
Arkadiush
Antchak
Lodz Polytechnical Institute, Poland
The influence of main parameters and variables of genetic algorithms on efficient solution of optimization problem is considered. The data on adaptive organization of parameter selection are presented. Experimental efficiency estimates of genetic algorithms applied to problems of production process planning are considered.
Dynamic Models of the Simplest Motions of the Mobile Robot Platform as Components of the Complex System for its Functioning Simulation
57-65
10.1615/JAutomatInfScien.v36.i2.60
Nikolay P.
Podchasov
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kiev
Olga N.
Sukhoruchkina
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kiev
The problem of simulation of the dynamics of a mobile caterpillar robot is considered. For the simplest motions of its platform within the made hypothesis about a nature of interaction of caterpillar tracks with the supporting plane the motion equations, which are integrable in the closed form, have been obtained. It enables us to use the mathematical model while organizing the operator interface in the real-time operation mode, the interface being based upon virtual robot models and an environment of its functioning.