In this paper, we propose a new model of spatio-temporal dynamics concerning the tritrophic reaction-diffusion system by introducing Phytoplankton and Zooplankton. We recall that the phytoplankton and zooplankton species are the basis of the marine food chain. There is prey in each marine tritrophic system. The main objective of this work is to control this species's biomass to ensure the system's sustainability. To achieve this, we determine an optimal control that minimizes the biomass of super predators.
The paper proposes a multilevel multiconnected structure of the system for adaptive multicriterion optimal control of “arc steelmaking furnace — supply network” electro- technological complex modes
The control system of optical telescope electric drive, which is used for automation of observation processes in positioning and tracking modes to ensure the quality of various quantitative parameters of the telescope in these modes, is synthesized. Mathematical and computer control system models in modes of positioning and tracking were developed. The results of computer simulation in MATLAB / Simulink of developed control system confirmed the theoretical results.