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The paper considers the problem of control of movable objects with distrib-uted parameters, optimal according to standard quality criteria, concerning the actual goal of optimization of the operational temperature modes for continuous process instal-lations for preheating semi-finished products before subsequent pressure treatment. The solution to the problem provides the optimal energy consumption distributions of the heat sources' power along over the length of the heater in stationary modes of its operation, which act as the desired design solutions for the installation. Algorithms for automatic programmed and positional control of operational transient modes of a heating installa-tion are proposed that are optimal in terms of a standard quadratic quality criterion under conditions of a given accuracy of uniform approximation of the final spatial temperature distribution to the required one. The procedure for synthesizing an optimal controller is reduced to constructing a control system with linear feedback based on incomplete measurements of the object's state with non-stationary transmission coefficients determined by a preliminary calculation of programmed control.

To solve the problem of compensation of the influence of a perturbation on the angular position of the spacecraft, an engineering technique is proposed for the synthesis of an algorithm for controlling the flywheel orientation and stabilization system, based on ensuring selective invariance of the control system and the anti-accumulation signal scheme. The effectiveness of the method is confirmed by numerical modeling.

To solve the problem of estimating the orientation and position of an aircraft, a system based on series-connected Kalman filters is proposed: a linear Kalman filter in the attitude stabilization loop and an extended Kalman filter in the subsystem of maintaining the target location. The effectiveness of the developed control system is confirmed by experimental results of the quadrocopter indoor flight control.

The problem of monitoring the metal particles of friction pairs’ wear in lubrication systems of power plants is considered. The solution is proposed on the base of a multi-channel cluster eddy current sensor with single-coil sensitive elements. The sensor is installed in the oil pipeline break and provides the identification of ferromagnetic and non-ferromagnetic metal particles, as well as their ranking by several size groups. The features of the conversion of sensing elements’ inductances in differential measuring circuits during the movement of metal particles through the oil channel of the sensor are considered. The effect of the particles’ speed in the oil flow on the result of the conversion of sensor signals is analyzed. The algorithm for recognizing and assigning metal particles to specified size groups is given. Considering the possible effect of the particles’ speed on the result of the conversion of sensor signals, the operational correctness of the algorithm is evaluated.

The problem of estimation of the force loading channel gain of the electrohydraulic strength test bench is considered, in particular, on the basis of the frequency response analysis, the gradient method, the least squares method with sliding window, and the recursive least squares method with forgetting factor and based on the harmonic analysis. The calculation relations of the algorithms for obtaining an estimate of the force loading channel gain are given, the results of implementation of these methods on the experimental bench are presented, and a comparison of the estimates obtained by different methods is performed. As a result of the conducted research, recommendations are given for building an adaptive control system with the force loading channel coefficient identification loop on the aircraft structures strength test stand. The obtained results make it possible to automate the process of regulators’ adjustment for electric hydraulic actuators of the stand and to speed up the process of strength and fatigue strength tests of aircraft structures.

The new methodological approach to modern integrated geomechanical monitoring of large-scale subsoil use facilities in Siberia uses the multimodal and digital factories of diversified experimental and theoretical geoinformation. The main elements of the geoinformation system are described with definition of communications implemented via systems of orchestration of the data containers. The information aggregation and transmission technologies use the Internet of Things and include data storage, processing and systematization stages with regard to the available information on subsoil use assets. The trials of the information system in its different modes and options are described as a case-study of Kuzbass and Norilsk mining industry. The authors propose a new energy-based approach to the integrated analysis of nonlinear deformation waves and seismic emission processes within the framework of theory of pendulum waves.

The manmade acoustic signal properties are determined for rock mass monitoring aimed to predict main roof subsidence in coal longwalls. The limit properties for the automatic problem algorithm are defined. The dynamics of the informative parameters of a manmade acoustic signal is demonstrated as a case-study of the main roof subsidence areas in longwalls in Yalevsky Mine, Kirov Mine and Komsomolets Mine. The parameter stability of the integral resonance frequency energy at different distances from a setup room lengthwise an extraction panel is studied in three longwalls in coal mines of SUEK-Kuzbass in order to find correlation between relative stresses and intensity of interlaminar strains. The proposed and proven prognostic parameter enables timing of main roof subsidence and evaluation of the process dynamics.

Soil-water characteristic curves (SWCC) are extremely important in solving practical engineering problems. Most of SWCC are measured based on the specimen in equilibrium, which has long test time, high specialization of test equipment and complicated test operation steps. Moreover, based on the existing equipment technical conditions, the determination of SWCC in the process of dehumidification and moisture absorption requires a variety of tests. Taking Jiangxi laterite, granite residual soil and expansive soil as the research object, SWCC based on the conventional geotechnical test is obtained. SWCC of dehumidification under no vertical load and vertical load and the soil water characteristic curves of dehumidification and moisture absorption are studied by conventional geotechnical tests. Compared with SWCC measured by geo experts pressure plate instrument, SWCC measured based on conventional geotechnical test is very close to that measured by pressure plate instrument.

Gas and dust clouding after large-scale blasting at Sitovo Quarry in the Lipetsk Region and the resultant pollution of the neighborhoods of the nearest towns is studied. The concentrations of solid particles less than 2.5 µm in size are determined in real time using modern equipment. The electronic filming of a large-scale blast and the dust cloud transfer with the wind within the limits of the quarry allowed considering a theoretical partial problem on propagation of fine-dispersion dust from the upper portion of the cloud from a height of 50-100 m to the recording points on ground surface beyond the quarry limits. The methods of computational fluid dynamics are used to model flow at the bottom of the atmospheric boundary layer disturbed by the wind interaction with the quarry topography. It is shown that turbulent diffusion ensures vertical dispersion of micro particles down to the recording points. An explanation is proposed for the revealed non-monotonic maximal concentration of dust over ground surface with an increasing distance from the quarry.

The new dust suppression method using chemical agents has been developed, patented and put in use in some surface and underground mines in Kuzbass, in the Novosibirsk Region and in Khakassia. As compared with the known solutions, this method allows enhancing efficiency of dust suppression in combination with extra effect of decreased freezing of coal during transportation.