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Komputerowe wspomaganie zarządzania eksploatacją systemów technicznych przy zastosowaniu symulacji cyfrowej. Cz. I.

Kołodziński E.

Zagadnienia Eksploatacji Maszyn

2002

Vol. 37, nr 1

113-124

W artykule przedstawiono istotę badania systemów metodą symulacyjną z zawężeniem do symulacji cyfrowej. Zdefiniowano podstawowe pojęcia używane w badaniach symulacyjnych: symulacja cyfrowa, algorytm symulacji procesu, model symulacyjny systemu, algorytm badania symulacyjnego. W literaturze przedmiotu występuje duża nieokreśloność znaczenia tych terminów. Dokonano odniesienia omawianej metody do badań na systemie rzeczywistym i metody analitycznej.

The problem of computer support for technical system exploitation with the use of a digital simulation has been formulated in four parts of the paper. In the first part, the essence of the system testing with a simulation method has been shown. In order to eliminate the diversity of the meaning of the vocabulary used in the thematic area, basic notions, among other things, such as: a model, a mathematical model, a simulation model, a simulation algorithm, a simulation program a.s.o. have been defined. The simulation method of a system testing is being considered as a connection of an analytic model and experimental researches carried out on a real system. In the first phase, a mathematical model of a system performance is being worked out. The model is being suplemented with the functions of the observation of the processes which are reproduced during the tests. The mathematical model is formulated in the shape of a simulation algorithm for the system testing. The procedure connected with the evaluation of interesting us characteristics is similar to the experimental tests. The consistence of the characteristics depends, among other things, on the adequacy of the simulation model to the processes that take place in the tested system. In the second part of the paper the problem of a statistic evaluation of the simulation model adequacy has been formulated. The method of the design of the distance measure of the simulation model from the tested process and the procedure during the adequacy evaluation have been presented. The analysis of the statistical applicable method of the adequacy evaluation has been done. One of the most frequent purposes of the simulation tests is the determination of the characteristics of the system functioning. The aim of the characteristics determination with this method lies in the determination of a mathematical model of the regression of the first type. In the third part of the paper, the stages of the regrression determination as the system functioning characteristics using digital simulation have been described. The possibility of the statistic optimalisation on the ground determined in such way regression model has been signalled. In the fourth part of the paper, using the example of a sewerage & water supply system factory, the practical application of the digital simulation for computer support of the management of technical system exploitation has been described. Possible range of the computer support for the factory management has been proposed. The thematic groups of the management takes with the use of simulation have been shown. The method of the execution of the above mentioned tasks have been briefly characterised.