Article

Article title DEVELOPMENT OF FUZZY CONTROLLER FOR FUEL SUPPLYING CONTROL IN BOILER
Authors V. V. Ignatyev, A. A. Pushnina, I. V. Pushnina, O. B. Spiridonov, V. I. Finaev
Section SECTION III. MODELING OF COMPLEX SYSTEMS
Month, Year 07, 2017 @en
Index UDC 581.5:681.3
DOI
Abstract The purpose of this paper is to analyze and formalize the operation of the water boiler plant in the condition of the initial dataincompleteness for development of a fuzzy controller model to control the gas supply to the boiler type KV-GM to maintain a stable water temperature at the boiler output. The classification of industrial boilers is considered to achieve the goal. A brief analytical review of the papers, in which the solution of similar problems is considered, is carried out. The analysis shows that the urgent direction of development of the boiler control systems is the application of the artificial intelligence methods. At the same time, an insufficient attention is paid to the problem of the gas consumption controlling inwater boilers. The construction and operating principle of the KV-GM boiler, the physical model of the boiler, which allows determining the limits of the required gas and air flow from the heat balance equation and calculate the efficiency, are considered. When setting the output variable as a fuzzy interval, a fuzzy interval of the gas flow and an ideal gas-to-air ratio for the boiler"s operating process are determined. When developing a fuzzy controller, the linguistic variables “control error”, “error rate”, “rotation angle of the accusative mechanism”, parameters of the base sets and fuzzy variables membership function are defined. Experts define the decision-making rules. A block diagram of the fuzzy controller in the MITLAB FIS editor, a structural diagram of the control system in Simulink are developed. The simulation is performed in the statistical mode of the boiler, when a salutatory control action is applied and in the presence of disturbances. It is shown that the use of a fuzzy controller ensures the stability of control in contrast to the application of the control systems based on the methods of the classical theory of automatic control.

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Keywords Gasboiler; waterheating; control; uncertainty; making decision; simulation; algorithmization; simulation modeling.
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