КОМПАРАТОРНАЯ ИДЕНТИФИКАЦИЯ ЧАСТОТНЫХ ХАРАКТЕРИСТИК СИСТЕМ АВТОМАТИЧЕСКОГО УПРАВЛЕНИЯ СУДОВОЙ ЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ
| Jazyk: | ruština |
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| Rok vydání: | 2020 |
| Předmět: | |
| DOI: | 10.25686/2306-2819.2020.1.47 |
| Popis: | Сформировано обоснование, что компараторная идентификация логарифмических характеристик систем автоматического управления позволяет оценить устойчивость этих систем и позволит представить методологию проведения данного рода оценки. Приведены результаты, которые позволяют утверждать, что: метод переключения степеней позволяет приближённо строить логарифмическую амплитудную частотную характеристику (ЛАЧХ) сложных систем, заданных передаточной функцией, оценивать по характеристикам положение и величину резонансных пиков в отсутствие компьютера, а также качественно контролировать ЛАЧХ, получаемые в компьютерных программах. Спроектированы исполнительные конструкции имитационных моделей базовых параметров на платформе пакета Simulink. The proposed justification states that the comparative identification of logarithmic characteristics of automatic control systems allows to estimate the stability of these systems and to present a methodology for conducting that kind of estimation. Estimation stability in automatic control systems (ACS) is defined by the logarithmic amplitude (LAC) and phase (LPC) frequency characteristics obtained by taking the logarithm (lg) of the transfer function W (jw). The aim of the research was to obtain a high-quality rapid estimation of the construction of the LAC and LPC of systems and objects of a ship power station by developing an algorithm of the methodology (classification of groups of methods) of comparative analysis of the LAC and LPC of the automatic control systems of a ship power station. Paper presents the components of the control theory for solving the standard control problem, the theory of pattern recognition in the problem of constructing a hypothesis, the theory of invariance in solving the problem of increasing noise immunity, logic algebra in the decision-making problem, analytical geometry and the elements of group theory in developing identification algorithms. They were integrated and employed in developing theoretical foundations of methods of increasing noise immunity of identification procedures. The parameters of the component perturbations of LAC and LPC were visualized. It was verified by the graphs. For mathematical modeling at the stage of practical use, applied software and computer graphics programs were employed. Research findings allowed to conclude that the degree switching method allows to approximately construct the LAC of complex systems characterized by the transfer function, to estimate the position and magnitude of the resonance peaks without computer, and also to qualitatively control the LAC obtained in computer programs. Simulation models of basic parameters were designed in the Simulink framework. The LAC of minimum-phase systems allows to construct both the LPC and the model of the initial system in the form of a series connection of typical components. The obtained approximations of the LAC and LPC of the open loop allowed to estimate the stability of the closed ACS. Based on a comparative analysis with LC-filter simulation model. №1(45) (2020) |
| Databáze: | OpenAIRE |
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