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A two-step procedure for solving problems of robust control of dynamic plants with uncertainties is proposed. Plant dynamics is first subjected to robust correction by means of a high-gain control loop in accordance with a given reference model. Since the corrected plant model is now known, standard control methods are then used. This approach is implemented in a two-loop control system: the inner loop provides robust correction of a plant, and the outer loop is responsible for the achievement of the control objective.

We study pole placement in SISO linear control systems with low-order controllers is studied. A method for finding critical (including optimal and suboptimal) pole placement in closedloop systems is theoretically justified and demonstrated on an example. Using critical root diagrams and root polynomials, it is possible to analytically express the parameters of a suboptimal controller in terms of root coordinates, in particular, the real and imaginary parts of characteristic roots. The resulting algebraic equations and inequalities allow specifying the left-most shift of the pole placement domain and the greatest relative stability (possibly taking into account oscillation) without cumbersome calculations.

A problem of control of the motion of mobile robots with a differential drive in a leader-follower formation is considered. The proposed method of structural synthesis allow one to form control inputs for robots-followers only on the basis of information about the relative positions of the followers and the leader without using the absolute values of the spatial coordinates of the robots. The algorithm efficiency is confirmed by results of numerical experiments.

An approach is proposed for constructing an information-control system (ICS) for controlling the motion of mobile robots (MRs) of various types and purposes. This ICS consists of universal components with data exchange through interfaces independent of the MR hardware. The use of this system appreciably decreases the cost of the development of a new generation of mobile robots.

This paper gives brief descriptions of the distinctive features of the method of measuring radial and axial displacements of complex-shaped blade tips (employed in turbines) using a distributed cluster of single-coil eddy current sensors (SCECS) with a sensitive element (SE) in the form of conductor strips, known models of the electromagnetic interaction of SCECS SEs with the controlled and adjacent blades, and a measuring circuit (MC) with a cluster of two SCECSs designed for computational experiments. Results of experiments in the form of families of conversion functions (dependences of the equivalent inductances of SEs or digital codes at the MC output on the desired radial and axial displacements of the blade tip) and families of influence functions of adjacent blades on the equivalent inductances of the SE and the MC output codes are considered.

A problem of constructing a combined adaptive control system for periodic modes of a control-affine a priori uncertain nonlinear dynamic object is considered. At the stage of simulation modeling, the quality of the resulting control system is illustrated.

The error of measuring the capacity of semiconductor structures at a high frequency by an integrator-based measurement circuit is studied theoretically and experimentally. Relations derived for calculating this error allow one to choose the measurement circuit parameters correctly for particular conditions.

The article presents an analysis of the current situation in the Arctic zone of the Russian Federation by identifying factors that impede the sustainable economic growth of the macro-region, obstruct the implementation of investment policies, and affect the level of economic competitiveness. A special focus is put on an integrated approach to the determination of the macro-region's status, its role in the system of socio-economic development, strategic planning, not only in ensuring the national interests of our country and global competitiveness of Russia in the Arctic, but also in practical forecasting. In addition, we analyze the contemporary experience of state regulation for the development of polar areas in the USA and Canada. The article provides suggestions for further improving the system of strategic planning documents aimed at implementation of the state policy of Russia in the Arctic.

The article examines the main sources of Russia's federative statehood and its modern features. We analyze its development in connection with the general evolution trends of the idea and state practice of federalism in the today's world. It is crucial that federative relations in Russia continuously improve, as they are one of the prerequisites for the sustainable economic development of the country and its regions and are necessary to achieve the country's goals in the economic and social spheres. The research methodology is based on the analysis of the main formation stages that federative relations in Russia are passing through. We focus on the fact that legal and institutional foundations of Russian federalism are closely related to the consolidation of its economic base, primarily through the improvement of the Russian model offiscal federalism. The article describes both finished and unfinished tasks associated with the transformation of the economic and legal framework of federative relations, which we define as the main prospects for the Russian federative reform. We have concluded that the federative reform cannot be considered complete. It should be continued, but based on a clear target-setting principle and built in close relationship with other key areas of social and economic transformation in Russia.

The article analyzes the reasons and consequences of deindustrialization in Russia and advanced economies. Here we define the prominent features of technological and organizational basis for a new industrialization (robotic automation, additive technologies, new materials, big data, agent-oriented modeling, cognitive systems, distributed and cloud computing, the production differentiation, unmanned technologies, etc.). The emphasis is put on the characteristics of reindustrialization processes in Russia and how they are slowed down by the need to create internal mechanisms for maintaining technological and economic progress.