On the synthesis of discrete-continuous control systems with elastic-dissipative links for electric drives

Казанцев, В. П.; Даденков, Д. А.

doi:10.3103/s1068371212110065

Cited by 6 publications

(3 citation statements)

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“…The faithfullness of the simulation model was confirmed by comparison of experimentally obtained data [6]. Transients of current, speed are corresponding to the actual values measured at the unit (aggregate).…”

Section: Results Of Simulation Modelingmentioning

confidence: 65%

“…When analyzing systems with elasticities, it is usually assumed that the elastic links are weightless and are characterized by constant coupling rigidity, i.e., the proportionality coefficient between the moment (force) and deformation [6,7,8]. In other cases, it is assumed that the material has a constant mass, but can change its stiffness due to temperature changes [9,10].…”

Section: Statement Of the Problemmentioning

confidence: 99%

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Developing a Mathematical Model of a Horizontal Looper Taking into Account the Features of a Steel Strip

Kuntush¹,

Брейдо²,

Zyuzev³

2018

EAI Endorsed Transactions on Energy Web

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Modern cold rolling mills include devices that form a reserve of strip to ensure the continuous operation of the line. Such devices include a horizontal looper containing a direct current drive. The disadvantage of the existing horizontal looper is significant oscillations of the metal strip in the process of its filling, with the maximum amplitude of oscillations occurring when the strip is completely filled. To study the oscillatory processes in the strip, a model of an electromechanical system has been developed. The necessity of taking into account mechanical properties of the steel strip in the development of a model of an electromechanical system has been substantiated. Mathematical and simulation models of a horizontal looper were developed in two extreme positions. The simulation models have been implemented in the MatLab software package. The results of simulation studies showed satisfactory convergence of the experiments with the physical process.

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Section: Results Of Simulation Modelingmentioning

confidence: 65%

Section: Statement Of the Problemmentioning

confidence: 99%

Developing a Mathematical Model of a Horizontal Looper Taking into Account the Features of a Steel Strip

Kuntush¹,

Брейдо²,

Zyuzev³

2018

EAI Endorsed Transactions on Energy Web

View full text Add to dashboard Cite

show abstract

“…Out of all parameters, the most interesting are those, whose combinations will provide the maximum damping of elastic vibrations [9].…”

Section: ) Constructive Methodsmentioning

confidence: 99%

Archives of Electrical Engineering

Breido,

Kuntush

2020

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The article presents studies on the electromechanical system of a metallurgical horizontal looper in the steelmaking industry. During the operation of this unit, parameters in the system changes due to variations of length and mass of the steel strip, these variations significantly change elastic properties and reduce moments of inertia. Various methods of combating elastic vibrations in electromechanical systems are analyzed in this article. The article presents a description of experiments with a horizontal looper. A mathematical model for two extreme positions of the unit was developed based on experimental results. Simulation experiments were made and their results are presented. A new control system structure is proposed to reduce vibrations in the electromechanical system of a horizontal looper. A power-up sensor, adjuster and velocity derivative feedback were added into the model structure. The proposed feedback link structure takes into account the change of steel strip length. From the experimental data it follows that the proposed system provides effective damping of mechanical vibrations in the steel strip if its length during operation is changed.

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Electric drive control system of the paper-making machine

Казанцев

Даденков

Ponosova

2019

J. Phys.: Conf. Ser.

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Here are presented the synthesis of paper-making machine electric drives control systems. Quality indicators of paper and cardboard are directly related to the accuracy characteristics of the electric drives of both machine wires in conditions of unpredictable changes in loads on their shafts. It is shown that to solve the problem of stabilization of wires velocities and their ratio it is advisable to implement the principle of servo control. It is proposed to use the lower wire speed stabilization subsystem as the leading one, and the upper wire speed servo subsystem with the stabilization of the zero deviation of the integral from difference of electric drives speed. Presents the results of a synthesis and analysis of two-dimensional servo system finite electric drives control in conception of the modern vector-matrix control theory. A discrete-continuous mathematical model of the electromechanical system is obtained. To ensure the quality of speed control, discrete finite state regulators are used. As a result of the synthesis, expressions for the implementation of a discrete control device are obtained. In simulation, the reactions of the drives to the increment of the speed and to the increments of the loads on the drive shafts are obtained. The simulation results showed the effectiveness of the proposed principles of electric drive control. The electromechanical system demonstrates the properties of astatic control and reduces the deviation of velocities in steady-state modes to zero. The solution to the problem of reducing the mutual influence of electric actuators for the stabilization of the velocities of the machine wire and maintaining them in the specified ratios will reduce to a minimum the displacement of the paper layers formed on both machine wires. The practical application of the proposed electric drive control system in production contributes to improving the quality of products manufactured on a paper machine.

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On the synthesis of discrete-continuous control systems with elastic-dissipative links for electric drives

Cited by 6 publications

References 0 publications

Developing a Mathematical Model of a Horizontal Looper Taking into Account the Features of a Steel Strip

Developing a Mathematical Model of a Horizontal Looper Taking into Account the Features of a Steel Strip

Archives of Electrical Engineering

Electric drive control system of the paper-making machine

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