Conference proceedings

REGULATION OF THE PUMPING UNIT SPEED ACCORDING TO 
CHANGING DAILY WATER CONSUMPTION BY THE METHOD OF 
FUZZY INFERENCE
 
Sumgayit State University, Sumgayit, Azerbaijan 
[e-mail] 
Abstract. 
The task is to develop a fuzzy model for controlling 
the speed (rotation frequency) of a pumping unit during the operating according to a changing daily water consumption. It is proposed 
to bring the pumping unit to the most optimal operating modes using control rules, using elements of fuzzy logic. Basic control 
principles are discussed, but not detailed pump design. Ranges of values of control parameters are formed on the basis of a daily 
stepwise schedule of water consumption. The term of the set of linguistic variables "water consumption" and "pump speed" are defined. 
Fuzzification of controlling influencing linguistic variables is performed using the Fuzzy Toolbox application of the 
MATLAB package. For the input linguistic variable "water consumption", three membership functions of piecewise-linear triangular 
type in graphical form are built. For the output linguistic variable "pump speed", three membership functions of piecewise-linear 
trapezoidal type are plotted in graphical form. The base of rules for the implementation of a logical solution is built. The results of the 
logical solution were obtained using the logical inference method 

of the Mamdani algorithm.