ADAPTIVE SEARCH LESS CONTROL OF A PUMPING COMPLEX IN CONDITIONS OF NON-STATIONARITY

At operation of the automated pump complexes except for signal (coordinate) disturbances, there are the parametric disturbances, caused by non-stationarity of parameters of the given complex, in particular hydraulic resistances of the network, pump, inlet pipeline, and also fluctuations of parameters of the pumped liquid. The traditional approach to the automatic control of the output coordinates of the pump complex is reduced to the construction of systems with coordinate feedback and, as a rule, the regulation of speed of the centrifugal pump, which is inefficient for solving the problems of fast parametric control in the conditions of the relevant perturbations. The use of automated control of the bypass channel of pumping complex allows to provide more adequate processing of parametric disturbances, such as, in particular, vibration and elements of water hammer, as well as disturbances activating various undesirable hydraulic processes, such as cavitation and surge. The article considers the issues of building an adaptive search-less self-adaptive system to solve the problem of increasing the efficiency of working off the above parametric disturbances. Research objective: Investigation of the possibility of automatic processing of parametric disturbances when controlling the pumping complex by the bypass channel by constructing an adaptive system in the class of searchless self-adaptive control systems with a reference model. Materials and methods. The methods of mathematical modelling, in particular, the method of electron analogy, methods of the theory of automatic control with use of the apparatus of transfer functions, methods of the theory of adaptive control, methods of numerical modelling with use of the program complex SimInTech have been used to conduct research. Results. The synthesis of the control algorithm of the search-free self-adaptive system with a reference model to solve the problem of parametric perturbations in the pumping complex using the bypass channel has been made. Conclusion. The results of the study substantiate the possibility of building and using the adaptive searchless control system of the pumping complex for more effective automatic processing of parametric disturbances in order to compensate and reduce their negative effects.