Problems of optimizing the operation modes of an asynchronous electric drive according to the criterion of the minimum stator current, as well as the optimal control system of an asynchronous motor with a reference rotor flow vector, which can be used for most serial frequency converters, longitudinal components of the stator current are added to the control channel.

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When developing and researching management tasks, a climate model is needed. There are different ways to mathematically describe or predict parameters for controlling a greenhouse complex. Most authors represent the ambient air temperature by a Fourier series or its segment, as well as by trigonometric expressions. This approach makes it possible to use the obtained representation for solving specific thermal and physical problems, as well as for calculating heat and moisture resistance. A mathematical model of greenhouse microclimate dynamics has been developed. The mathematical model describes parameters such as air temperature, relative humidity and soil humidity. The developed model in the form of a differential equation is calculated numerically using the Maple 17.

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