Intellectual Control of Oil and Gas Transportation System by Multidimensional Fuzzy Controllers with Precise Terms

Abstract

In order to improve the pump station control quality a special case of fuzzy controllers has been suggested to use, in which both the input and output variables are represented by a set of mutually non-overlapping terms of the rectangular shape of the membership function (precise terms). As it has been found out there is only one term in this set at any moment of time that is equal to a logical unit, whereas in the production rules system operating such terms, at any arbitrary moment of time, only one production rule antecedent is equal to a logical unit. This allows without losing of the control adequacy in each controller production system scanning cycle not to execute it completely, but solely as far as the rule, whose antecedent at a given moment is equal the logical unit, which also offers immense opportunities to increase the controller speed. In fuzzy controllers with precise terms, unlike the conventional fuzzy controllers the control precision has been shown to be invariant with respect to the complexity of the production rules conditional part structure. It is now clear that precision of fuzzy controllers with precise terms in the control systems as represented by verbal models is compatible with PID-controllers precision while using them to control the linear process facilities.

Development of Mathematical Models for Predicting Oil Production and Transportation Processes Under Conditions of Uncertainty

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Development and Research of a Dynamic Flow Laboratory Bench Model

“…Often, the power of the frequency converters is chosen to match the power of the motor, but you need to understand the fact that this rule is relevant for equipment with a nominal number of revolutions per minute. When using any other motors or in certain special situations, the choice of the frequency converter must be in full accordance with the nominal output current [6].…”

Power-Efficiency Analysis of Oil Well Systems With Sucker Rod Pumping Units

“…Синхронную угловую частоту вращения электродвигателя можно определить с помощью выражения [7,8,9] аварийная тормозная система цепного привода автоматически позволяет предотвратить падение противовеса в случае обрыва штанги (каната); автоматическая система электроблокировок цепного привода обеспечивает безопасность в условиях эксплуатации оборудования; система оперативного контроля натяжения цепи позволяет автоматически подтягивать цепь привода с помощью механического устройства [1,6].…”