Boost voltage converters are widely used in industry and engineering as power supplies and voltage stabilizers. The basis of the converter is a key element, with the help of which the redistribution of input energy to output energy is carried out, depending on the required transmission coefficient. The output voltage of the inverter depends on the input voltage and external load. Taking into account the switching nature of the converter, a robust relay control law has been developed in the article, which makes it possible to stabilize the output voltage at unknown load, when it is impossible to measure it.

Within the framework of using digital technologies, this article substantiates mechanisms for examining scientific and technical potential of universities with introduction of methods of the active system management. Rigorous mathematical proofs are provided of the equilibrium state existence in expert examination procedures reflecting the experts’ subjectivity. In particular, experts’ interest in the examination results, as well as in their own personal ratings are demonstrated. It is concluded that digitalization of scientific and educational activities in modern universities possesses an important consequence in the form of elaborating programs for optimal management of their intellectual activity results. In addition, considered mechanisms of expert examination procedures make it possible with a high degree of correctness to evaluate complex projects connected to digitalization of scientific and technical products and optimization of resource management in executing programs at the universities.

The paper is devoted to the problem of synthesis of robust control of a steam generator with regard to restrictions on phase variables and control under the influence of external uncontrolled disturbances. To solve this problem, the block method ideology is applied. Sat functions, that restrict phase variables and control, are used as local feedbacks.

The current state and problems of development of complex logistics systems are considered. The main elements of the global logistics system that form cargo flows are highlighted. Promising models and methods have been proposed that allow for a through scenario analysis of the flows of international logistical transformations, in order to attract additional volumes of cargo to international transport corridors, including the East-West corridor, taking into account not only the throughput and processing capabilities of infrastructure and the presence of rolling stock, but also taking into account border, customs, sanitary, phytosanitary and other restrictions on functioning. Scenarios for the development of international logistics in the implementation of threats of various types are considered