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  • Decomposition of a complex dynamic system with a network architecture based on Cron's Diakoptic

    The paper presents a method for decomposition of a complex dynamic system with a network architecture based on the Crohn's diakoptic approach. The proposed method is aimed at the allocation of independent network segments, the removal of which from the general structure will not affect the overall performance of the system. Segments are formed as simple paths in the graph model of the system with the least weight of the incident edges and checking the condition for maintaining the product flow balance in the application to the transport task. In general, the decomposition method presented allows us to divide a complex technical object of the network architecture into subsystems, simplifying the process of analysis and management. In the case when the common control task and the dynamics of interaction of subsystems allow the system to be broken up into unconnected segments, or to limit interaction over certain lines, the method allows reducing the load on the transmitting elements of the system.

    Keywords: decomposition, complex dynamic system, network, grapho-analytical method, network segmentation, diakoptics, load reduction

  • Control of distributed underwater robot systems using reference adaptive model

    This paper presents an approach to organize the group control underwater vehicles based on multi-loop adaptation algorithm of position-trajectory control system of moving object, with the estimating unmeasured parameters, reference model and contour that ensure astatism 2nd order. Estimation of unmeasured disturbances on the top control level as part of the reference model, which allows for highly accurate positioning of the final master AUV in the target point specified as a parameter to the reference model. The application of the developed algorithm expedient in control systems of moving objects group, where a single object from the leading group, and its parameters are used as the parameters of the reference model. The leading mobile object control system uses an adaptive control system with disturbance estimation. The control systems of the slave moving objects using positional-trajectory control system astatism second order, thereby providing high-precision tracking of the movement of the reference mobile object.

    Keywords: group control, AUV, adaptive control, reference model, position, trajectory control, estimator, parameter estimation, the mobile object

  • Investigation of the effect of resistive components of the measuring circuit in the accuracy of measurement of the ion current in the combustion chamber of internal combustion engines

    For basic research flame ionization process is necessary to obtain the true value of the ion current on the probe, taking into account the errors of the measuring circuits. To study the processes of ionization in the combustion cameo widespread ionic current sensors in the presence of the resistive component of the measurement circuit, such as current-limiting elements in the circuits connecting to the ignition coil high-voltage output or measuring shunt. This article describes how to account instrumental errors introduced by such measuring systems, as well as the proposed formula of the transition from the signal values ​​obtained experimentally to the true value of the ion current. The results of the calculation of the reduced value of the ion current to the experimentally obtained signal. The possibility of making instrumental error of up to 40% in amplitude at signal peaks. It is shown that the construction of I-V characteristics of the ionization probe must be considered instrumental error introduced by the resistive components of the measuring circuit.

    Keywords: ion current, the electrical conductivity of the flame, the measuring circuit, the instrumental error of measurement, resistive voltage divider, ICE

  • Estimation of nonlinear higher order disturbances in the adaptive algorithms for position-trajectory control

    This paper presents an adaptive algorithm for position-trajectory control with reference model and estimation of nonlinear circuit unmeasured disturbances. The introduction of a robust observer derivatives in the base controller position-trajectory control, built on the principles of self-adjusting adaptive systems with a reference model, allows to estimate unmeasured disturbance characterized by non-linearity of the second order and higher, and to adapt the parameters of the system in order to reduce or minimize the zero mismatch errors between the control object and reference model. The use of derivatives allows the observer to increase the overall stability of the control system, otherwise, the system loses its stability in short-term effect of the disturbance on the control of high-order object.

    Keywords: adaptive management, reference model, positional-trajectory control, observer, parameter estimation, the movable object, AUV

  • Hexacopter movement control method based on dynamic repellent forces in the three-dimensional environment with obstacles

    In the article the method of dynamic repeller formation in case of drone movement control is offered for use in the three-dimensional environments with obstacles. Erle-HexaCopter is considered as drone in this article. Article contains the short description of a hexacopter mathematical model and positional-trajectory control movement algorithms. The method is based on representation obtacles as dynamic repeller is offered. Dynamic repellers are formed depending on the distance from the drone to the obstacle in the movement process. This method is analyzed and simulated in Matlab. Cases with one or several stationar obtacles are considered in simulation. In conclusion, we formulated the revealed features of this method

    Keywords: Hexacopter, unformalized environment, 3D, round of obstacles, movement control, repeller, drone

  • The Basic Algorithm of Adaptive Management of the Synchronous Generator with a Reference Model

    The article discusses the the problem of controlling a synchronous generator, namely, maintaining the stability of the control object in the conditions of occurrence of noise and disturbances in the regulatory process. The model of a synchronous generator is represented by a system of differential equations of Park-Gorev, where state variables are computed relative to synchronously rotating d, q-axis. Management of synchronous generator is proposed to organize on the basis of the position-path control using algorithms to adapt with the reference model. Basic control law directed on the stabilizing indicators the frequency generated by the current and the required power level, which is achieved by controlling the mechanical torque on the shaft of the turbine and the value of the excitation voltage of the synchronous generator. Modification of the classic adaptation algorithm using the reference model, allowing to minimize the error of the reference regulation and the model under investigation within the prescribed limits, produced by means of the introduction of additional variables controller adaptation in the model. Сarried out the mathematical modeling of control provided influence on the studied model of continuous nonlinear and unmeasured the disturbance. Simulation results confirm the high level accuracy of tracking and adaptation investigated model with respect to the reference, and the present value of the loop error depends on parameters performance of regulator.

    Keywords: position-path control, adaptation algorithms, reference model, synchronous generator

  • Algorithms multiconnection position-trajectory control of mobile objects

    The paper considers the algorithms of position-trajectory control of mobile objects, are automatically distributed control forces and moments on the actuator. The basic control law is based on the equations of kinematics and dynamics and method of position-trajectory control of mobile objects. We consider the distribution of control forces and moments on the basis of pseudo-inverse matrix, which provides minimum MSE. This approach does not provide for preliminary separation of control channels, as is customary in classical systems of mobile objects. The proposed method is applied to the control system of aeronautical complex. The cases of excessive and insufficient number of control channels. The results of the simulation.

    Keywords: position-trajectory control, a multiply, actuators, mobile object

  • Development and analysis autopilot surface mini-board "Neptune"

    In this paper we propose an approach to the implementation of the automatic control system of autonomous unmanned surface vessels on the example of a surface mini-ship "Neptune". Synthesized autopilot algorithms based on the theory of control of dynamic objects, developed by prof. Pshihopovym. A program of mathematical modeling. simulation results, which confirm the correctness of the proposed algorithms.

    Keywords: autopilot, surface ship, mathematical modeling

  • Development and analysis autopilot surface mini-board "Neptune"

    In this paper we propose an approach to the implementation of the automatic control system of autonomous unmanned surface vessels on the example of a surface mini-ship "Neptune". Synthesized autopilot algorithms based on the theory of control of dynamic objects, developed by prof. Pshihopovym. A program of mathematical modeling. simulation results, which confirm the correctness of the proposed algorithms.

    Keywords: autopilot, surface ship, mathematical modeling

  • Assessment of disturbance in the process of regulatory control of synchronous generator

    The paper is concerned to the synthesis of synchronous generator’s regulatory control algorithm that is one of the main elements of power system and power stations, in a whole. The algorithm allows to improve the stability margin of synchronous generator’s control system. Because of integrated derivatives’ observer synthesized algorithm allows to detect the lever of unwanted disturbance in the process of electric power’s generation and adjust the work of generator. It is conducted the modeling that shows high resistance of spectator, quality of transients and steady mode of synchronous generator’s model status variables. The quality of free-form signal spectator’s assessment  is generated with enough high degree of accuracy that raises with the improvement of operation speed’s features of observer and regulator.  

    Keywords: power system, synchronous generator, synthesis, automatic control, observer, assessment

  • Synthesis of energy-efficient electric train traffic control algorithms in the conditions of overcoming the heterogeneities profile of the track

    In the paper we consider the energy efficiency of electric trains in overcoming the curved portion of the profile path. In this paper, were synthesized motion control algorithms that will help conserve energy resources by means of changes in traffic patterns electric depending on the profile path. The simulation electrorolling stock motion by offer the model showed a reduction in energy consumption compared to the nominal operation.

    Keywords: energy efficiency, electric train, traffic management, motion control algorithms, reducing the consumption of energy resources