Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Application of fuzzy models such as Takagi-Sugeno to refine the characteristics of critical flowmeters Zh.A. DAEV, N.Z. SULTANOV In this paper author considers the solution of the problem of obtaining a combined characteristic of the discharge coefficients of critical nozzles. At different times different researchers have obtained different characteristics of the discharge coefficients for different ranges of Reynolds numbers. This work on thinning the values and types of the discharge coefficients continues. The proposed work introduces the insetion of various fuzzy sets in individual ranges of Reynolds numbers for which a definite characteristic is obtained. The introduction of a group of fuzzy sets over the entire range of Reynolds numbers makes it possible to construct a fuzzy system based on a model of the Takagi-Sugeno type, which has proven itself in solving similar problems. The Takagi-Sugeno algorithm is performed on the basis of the rules base, which is implemented in modern calculators (controllers) of the flow rate and the amount of gas. The article is recommended to specialists who are engaged in the development and organization of the operation of flow measuring equipment. Keywords: critical nozzle, system, Takagi-Sugeno model, fuzzy model. Contacts: E-mail: zhand@yandex.ru Pp. 33-37.