Abstract The classical assignment problem is considered. A third index is introduced, which can characterize, for example, the location of the work carried out. An iterative decomposition algorithm is proposed. At each step, a problem is solved with three constraints from different groups of conditions and with one connecting variable. The triples of problems are also solved with one restriction, and

Abstract An effective (performance- and accuracy-wise) computational method for pattern recognition in a continuous video stream using deep neural networks for access control systems is proposed. The class of recognition problems solved by the method using a sequence of video stream frames is identified: the vehicle itself and the characters on its license plate (LP), faces of people, and abnormal

Abstract In this paper, we develop structural solutions of the selectively invariant electromechanical systems (SI EMSs) that adapt the regulators presented in the canonical form of controllability (CFC) and in the canonical form of observability (CFO) to changes in the velocity level. Their capabilities to provide the specified quality indicators in a wide velocity range are comparatively analyzed

Abstract The problem of increasing the maneuverability of a spacecraft (SC) by minimizing the duration of rotations around the center of mass is solved. The case is studied when the orientation is controlled using inertial actuators (power gyroscopes, gyrodynamics). The problem of the fastest possible turn of an SC using gyrodynes from an arbitrary initial angular position to the desired final angular

Abstract We model movements of a person swinging on a swing. We consider a flat three-link hinged mechanism as the main mechanical model of the person sitting on the swing. The first, second, and third links model the human body, two hips that are rigidly connected to the swing, and two shins, respectively. The hinge between the first and second links models two hip joints, while the hinge between

Abstract This paper demonstrates the technology for calculating spacecraft’s (SC’s) programmed laws of orientation that does not generate special, singular, states of the control moment gyro systems and consists of two collinear gyrodyne pairs. The calculation of the programmed orientation laws that do not contain singular states for two pairs of gyrodynes is possible due to the use of the kinematic

Abstract In the paper, the requirements for aircraft guidance methods are considered. It is noted that the existing methods of optimization of linear control systems based mainly on the minimization of quadratic functionals of quality do not allow providing the set of requirements for interception systems of aerial objects. It is proposed to use new local quadratic-biquadratic quality functionals,

Abstract In the computational experiments on a flow model of a communication and control network, changes in the system’s functional characteristics under destructive effects are studied. The removal of a subset of edges is considered to be critical damage if it results in the absence of connection paths for at least one pair of source-sink nodes. For each case of damage, both the total number of disconnected

Abstract The development of the theory of absolute stability, the theory of bifurcations, the theory of chaos, theory of robust control, and new computing technologies has made it possible to take a fresh look at a number of well-known theoretical and practical problems in the analysis of multidimensional control systems, which led to the emergence of the theory of hidden oscillations, which represents

Abstract The height of a building is a basic characteristic needed for analytical services. It can be used to evaluate the population and functional zoning of a region. The analysis of the height structure of urban territories can be useful for understanding the population dynamics. In this paper, a novel method for determining a building’s height from a single-shot Earth remote sensing oblique image

Abstract Cryptography and biometry are important components of contemporary access control systems. Cryptographic systems themselves are highly reliable but they require the exact reproduction of access keys; this cannot be done by humans, while the corresponding devices might be lost or stolen. Biometric data are always with the person; however, they vary: it is impossible to obtain the same feature

Abstract An approach to test the diagnostics of distributed computing systems based on the introduction of redundancy in the system in order to simplify the test construction process and the diagnostic process is investigated. The introduced redundancy is a diagnostic model of the system, which runs in parallel with the main software of the system. For this model, sufficient conditions for controllability

AbstractA constructive solution of the optimal energy-efficient programmed control problem for distributed parameter systems with a given-precision uniform approximation of the space distribution of the controlled variable with respect to the desired state is proposed. The computational algorithm developed below involves a special-form preliminary parametrization procedure for control actions on finite-dimensional

AbstractThe work is devoted to studying the dynamics of unstable oscillating systems (in the form of an inverted pendulum) controlled by the action of a hysteretic type. The results for different types of motion of a suspension point are presented, in particular, for vertical and horizontal motion. A mathematical model of the inverted pendulum with an oscillating suspension is considered. For this

AbstractWe consider the problem of refining the evolving Earth Orientation Parameters (EOP) used during the converting from the inertial coordinate system to the Earth’s coordinate system, including ephemerides computations onboard spacecraft (SC). We discuss the approaches and technologies used to refine these parameters. We propose a concept to refine EOP by ground stations and SC, based on processing

AbstractThe optimal control problem of the random-jump structure of an object under counteraction conditions is considered. The counteracting parties observe any changes in the object’s structure using special indicators that operate with errors. The optimality criterion of the controls is a certain functional of the object’s state. One of the opponents seeks to minimize this criterion, whereas the

AbstractWe propose a method for obtaining the implication conditions of the properties of a mathematical model of a system from the structurally close properties of a model of another system related to the former one by cross-model linking objects. This method is applicable to various models and their properties. Any implication conditions for the properties are not required to be given a priori. They

AbstractIn this study, we consider a flat rotation of an electric rectilinear rod controlled by an electric drive, loaded at the free end by a point mass. The problem is to optimally control the voltage in the motor’s winding, which transfers the system to the final state with the damping of the elastic vibrations. A generalized formulation of the equations of the rod’s state and a method for approximating

AbstractThe identification of attempts to substitute images plays an important role in protecting biometric systems (authorization in mobile devices, access control systems for premises, terminals with automatic access by face recognition, etc.). This study presents a new method for detecting falsified images based on processing the multimodal data from a camera. A new neural network architecture is

AbstractA hybrid simulation method applied for developing and testing the process of spacecraft berthing (i.e., docking using a space manipulator) is described. In this method, the manipulator’s dynamics and the relative motion of the objects to be docked are computed using a mathematical model and the docking units are real-life copies. The relative motion of these units is reproduced on a 6-degrees

AbstractThe problem of the functional diagnosis of critical systems, described by a nondeterministic finite state machine model, is considered. A new method for solving the problem is proposed, the distinguishing feature of which is the use of the mathematical apparatus of the algebra’s covers. The features and advantages of the method are illustrated by the example of the problem of monitoring the

AbstractWe consider a mathematical model of a horizontal-axis wind-energy unit in which Savonius rotors are used instead of classical blades. The Magnus force formed due to the autorotation of Savonius rotors creates a momentum supporting the rotation of the central turbine shaft. The main difference of this study from earlier investigations in this area is as follows: we take into account the variation

AbstractThe problem of compiling an acceptable multiprocessor schedule without interruptions and switching is considered for the case when the set of partial relations is specified on the set of operations, all operations have a common deadline, and the distribution of tasks on the processors is specified. At some undetermined times, requests may be made to perform additional, higher priority operations

AbstractTracking the motion of objects in video sequences is an important problem of computer vision that has a wide range of applications. The key points in tracking systems is the detection of an object and, if it was detected repeatedly, its reidentification. A fast correctly working tracking system that uses a number of cameras is described. The system includes detection and segmentation of objects

AbstractIt is shown that due to the peculiarities of the detection zone of an airborne radar station of a long-range radar detection system operating in the pulse-Doppler mode, there are hidden trajectories in which airborne objects (AOs) are not detected by the airborne radar station. Solutions to differential equations describing hidden trajectories are found. The hidden trajectories are classified

AbstractFormulas are obtained that make it possible to realize a predetermined motion of a rigid body with respect to its center of mass in a coordinate system with this center and translating axes. It is shown that there are two significantly different cases. In the first case, the point should always be in a certain plane, which not only makes it possible to implement any required movement from this

AbstractThe paper considers operations on k-homogeneous hypergraphs and finding the vectors of the degrees of the vertices of the result of the operation without constructing the hypergraphs’ results themselves. It is proposed to express vectors from certain operations in terms of a vector from the intersection of two homogeneous hypergraphs. This will speed up the calculations and simplify the construction

AbstractThe use of deployment policies with the development of virtual machines (VMs) allows improving the reliability of applications, reducing the latency in interactions between VMs, and simplifying the administration at data processing centers. Setting VM deployment policies places additional requirements on physical resources. This can result in reduced physical resource utilization and a lower

AbstractMethods and algorithms for determining the orbit of a space vehicle onboard using the measurements of global navigation satellite (NS) systems are considered. Methods and algorithms for obtaining radio navigation measurements in the case of the highly dynamic orbital motion are described. The celestial mechanics interpretation of measurements is given. Algorithms for the three-phase processing

AbstractThe problem of detecting objects in images is solved by training the classifier by the descriptors constructed based on the local Radon transform of the gradient field of the image. The space of the Radon transform is considered as the Hough space accumulator in which projections are constructed. The set of local projections forms a descriptor of the region related to the object that is a generalization

AbstractThe problem of searching for and holding the International Space Station in a position of dynamic equilibrium is considered. The equilibrium orientation of the International Space Station (ISS) is determined by the superposition of gravitational, gyroscopic, and aerodynamic moments acting on it. The system of powered gyroscopes installed on the space station plays the role of effectors in this

AbstractThe problem of managing the dynamic infrastructure of complex systems in the context of targeted cyber attacks is considered. An approach to management is proposed, consisting of finding a self-regulation scenario in the minimum time that eliminates the destructive impact by finding an alternative route for implementing the objective function. It is proposed to characterize the process of self-regulation

AbstractThe motion of an artificial Earth satellite in different variants of the solar orientation mode in the low Earth orbit is investigated. The satellite is close in shape to a cylinder with two solar arrays. Nonrotating solar arrays are located symmetrically relative to it along the satellite’s longitudinal axis. In the solar mode normal to the plane of the satellite’s solar arrays invariably

AbstractThe paper presents the results of scheme-parametric optimization by the criterion of electric consumption of autonomous one-rock electrohydraulic steering actuators (SAs) with a negative overlap of throttle ports of their electrohydraulic amplifiers (EHAs) by spool plungers. The optimization rests on the results of investigating the effects of structural and regulatory parameters of EHAs on

AbstractThe problem of the exact bounded control of transverse vibrations of a thin plate is considered. Control actions are applied to the boundary of the plate, which fills a certain bounded domain on the plane. The purpose of the control is to completely stop oscillations in a finite time period.

AbstractThe results of the analytical and numerical solution of the problem of controlling the rotational motion of an axially symmetric rigid body with a combined performance index of the control process are presented using quaternions. The performance index includes the duration of the control, impulse of the squared angular momentum magnitude, and impulse of the magnitude of the control torque applied

AbstractThe problem of protecting an object on a moving base from transient shock impacts (disturbances) using an active shock isolator is considered. The maximum displacement of the object relative to the base is selected as the minimized quality criterion. Based on the anticipating optimal control obtained for a disturbance in the form of an instantaneous impact, a guaranteeing control is constructed

AbstractThe problem of modeling and analyzing output processes of linear continuous stochastic systems is considered and the method for its solution based on the spectral form of mathematical description of the control systems is proposed. The proposed approach provides an explicit representation of the output signal of the system in the form of functional series with random coefficients or in the

AbstractA deterministic dynamical system representing the contour network is considered. The number of contours is two. At each contour there is a segment moving with a constant velocity which is called the cluster, because in the discrete variant of the system it corresponds to the cluster of particles, that is, to the group of particles occupying the adjacent cells and moving simultaneously. The

AbstractThe problem of controlling resource flows in two-level networks with a tree structure simulated by a simplified radial structure at each level is considered. A resource flow vector to end consumers is taken as the maximized functional characteristic. Two flow control strategies are analyzed to obtain a Pareto optimal solution based on a weighted leximin rule. The first strategy, called the

AbstractA simulation problem for echo signals of two-position radar systems is considered. A four-point configuration of the two-dimensional geometric model is proposed to solve it. Relations are obtained for the arrangement of radiators of the model provided that the signals at both reception points are cophased. Based on these relations, we design an iteration algorithm to form the matrix of radiators

AbstractThis article considers the development and systematization of methods and models for decision-making in systems engineering for creating (developing) distributed organizational information and control systems and is a continuation and development of the general provisions and results previously obtained and published by the authors. An improved formulation of the problem of decision-making

AbstractThe features of controlling the movement of a walking robot with orthogonal propulsion when overcoming obstacles are considered. The problem of the coordinated control of horizontal and vertical displacement drives is formulated to implement a motion mode that ensures optimality in the given criterion. The criterion of optimality is the minimum heat loss in the drive motors. A methodology for

AbstractWe consider a controlled mechanical system with one degree of freedom described by an angular coordinate. The system is under the action of conservative and nonconservative forces. It is assumed that a corresponding dynamic system has a variable parameter that describes the control-impact gain factor. An iterative numerical–analytical method designed to form autorotation modes with assigned

AbstractThe structure and software of a complex navigation system for an unmanned apparatus are presented. It includes a platformless inertial navigation system, receivers of the satellite navigation system, and a computer vision system. An approach to the construction of an algorithm to exclude failures is proposed. Simulation results are provided.

AbstractBased on the Kharitonov criterion, a robust stability limit is constructed. Methods for calculating this limit are developed. An algorithm for designing an optimal robust control system with a given value of this limit is presented. The effectiveness of the algorithm is demonstrated by numerical examples.

AbstractA number of fundamental decisions that will determine the technical and economic characteristics of the project in the future are laid when creating new products at the image design stage. Therefore, it is very important, on the one hand, to form and, on the other, to evaluate a large number of alternatives that cover a wide space of possible engineering solutions. Alternatives are evaluated

AbstractA variant of the synthesis method for controlling a linear MIMO system by an output vector is developed that provides the given spectrum of a multidimensional dynamic system in the state space. It is based on the principle of duality of the task of controlling a MIMO system by a state vector and the task of constructing a state observer. The algorithm, without any changes, is applicable for

AbstractWe consider the control system of an adaptive wall-climbing robot. The robot adheres to the surface aerodynamically using a centrifugal-type pump. A mathematical model of the robot is constructed and its equilibrium conditions on an arbitrarily oriented plane are investigated. In order to optimize the energy consumption, an algorithm of the adaptive control of an aerodynamic pump is proposed

AbstractA method for identifying models of a given specification based on the use of the maximum admissible estimates of the requisite parameters is presented. This method provides parametric identification of models in the case when prior information about the system under study is characterized by a small number of observations and its uncertain character cannot be neglected. The method is validated

AbstractA practically useful algorithm for constructing the trajectory of returning from a Lunar orbit to the Earth using one-impulse and three-impulse maneuvering schemes is presented. This algorithm forms the return trajectory to the reentry point of the atmosphere satisfying the given constraints, taking into account the current ephemeris and the fact that the gravitational fields of the Moon and

AbstractAn analytical approach is developed to integrate redundant equipment complexes (ECs) with linear stationary models. A general technique for managing the redundancy of the complex at the design stage is formulated in the case of ensuring the invariance of the given set of transfer functions. A formalism is obtained for solving the integration problem of a complex when it is configured as a sequence

AbstractThe capabilities of using single-gimbal control moment gyroscopes (CMGs) for the attitude control of Earth remote sensing (ERS) satellites are studied. The situation of the incomplete spinning of CMGs used for controlling the angular motion of the satellite when these gyros have a different angular momentum is considered. Control algorithms that can be applied in this situation are proposed

AbstractWe consider optimal (on average) control problems and guaranteeing optimal control problems for bundles of trajectories of deterministic linear switchable systems such that the continuous variation of their state is described by differential equations, while the instant discrete changes of their state (switchings) are described by recurrent equations. The switching times and the number of switchings

AbstractFor linear autonomous completely regular differential-algebraic systems with commensurable delays in the state and control, we study the control problem for the spectrum, treating it as follows: each characteristic quasi-polynomial given in advance is assigned to the system by closing it by a differential-difference controller. We formulate modal controllability problems and weak controllability

AbstractDynamic game-theoretic models of fighting against the corrupt behavior of subjects in the models for coordinating private and public interests are considered. The case of the economic impact of an upper-level subject on a lower-level subjects is investigated. An algorithm for finding equilibria in the case of impulsion is described. Examples of calculations for various sets of input data are

AbstractNew results on controllability properties for bilinear systems with discrete time and scalar control without restrictions are presented. The controllability properties of bilinear systems with permutation matrices are discussed. For the first time, it was possible to establish and prove the necessary and sufficient conditions for the controllability of the systems under study.

AbstractThe article considers the problem of making multicriteria decisions in which the decision maker (DM) has the opportunity to indicate the range of selection policies to determine the most effective scope of the considered alternatives. The concept of the Dirichlet area of an alternative is introduced in the blurred area of the target settings of the DM, and four groups of quantitative characteristics

AbstractThis work determines the restoring forces of the elastic elements of a system with two degrees of freedom by its predetermined movement. Two bodies of a certain mass are considered. The first body is connected by the first elastic element with a fixed base; and the second body is connected with the first body by the second elastic element. The movement occurs in a straight line in a horizontal

AbstractIn this paper, we suggest a method for estimating the parameters of periodic motions and also a frequency-domain criterion of their stability for nonlinear time-invariant homogeneous (identical) multivariable automatic control systems with structurally identical subsystems. This method can be used to simply determine the parameters of periodic motions and their stability in the class of systems