Devising a procedure for the synthesis of electromechanical systems with cascade-enabled fractional-order controllers and their study
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2019, Vol 5, Issue 2
Abstract
An approach to the synthesis of automatic control circuits has been proposed, based on a fractional characteristic polynomial, which makes it possible to ensure the desired quality of a transition process under condition for implementing a certain structure of the fractional controller, which depends on the transfer function of a control object. The use of fractional desirable forms extends the range of possible settings of fractional-order controllers in the synthesis of circuits for electrical-mechanical systems, ensures better quality of transients compared to the full-order controllers, and thereby improves the efficiency of synthesized systems. Based on the obtained results of research, it becomes possible to recommend, in order to adjust the circuits for electromechanical systems, using the proposed fractional desirable forms that could meet the desired requirements to the systems of control over electromechanical systems. Construction of electromechanical systems on the principle of control with sequential correction has a significant advantage over other systems, owing to the simplicity of setting each contour, as well as a possibility to implement control coordinate constraints. A procedure for the structural-parametric synthesis of fractional-order controllers has been devised, on condition of their cascading switching in multi-circuit electromechanical systems; the synthesis algorithm of fractional-order controllers for appropriate control circuits has been given. We have synthesized an electromechanical system with cascade switching of controllers by applying the improved method of the generalized characteristic polynomial to choose the structure and parameters of fractional-order controllers and applying the desired form of fractional order. A two-circuit system of subordinate regulation has been considered as an example, in which a control object is the electric drive "thyristor transducer (converter) – engine (motor)". The influence of the synthesized fractional-order controllers on dynamic properties of the electromechanical system "thyristor transducer – engine" has been examined. Our study has shown a possibility to implement the cascading activated controllers for the electromechanical systems where the contours with the transfer full- and fractional-order functions are combined, as well as for systems with fractional-order contours only
Authors and Affiliations
Bohdan Kopchak, Yaroslav Marushchak, Andrii Kushnir
Keywords
Related Articles
- EP ID EP667105
- DOI 10.15587/1729-4061.2019.177320
- Views 74
- Downloads 0
Developing and programming the algorithm of refinement of the crystal structure of materials with possible isomorphous substitution
In general, the software for analyzing data using the X-ray diffraction method does not include the possibility for using stoichiometric principles between chemical elements and the relations between the occupation of cr...
Classification rule hierarchical tuning with linguistic modification based on solving fuzzy relational equations
<p>The common problem with the hierarchical tuning methods is the lack of conditions for modification of the primary rules. The incremental approach accelerates the generation of candidate rules, but complicates the sele...
Determining the maximally permissible values for the indicators of insulation of sealed entrance bushings with a voltage of 110 kV using the method of minimal risk
<p>A method for determining the maximally permissible values for the indicators of insulation of high-voltage oilfilled entrance bushings that ensure the minimal risk value has been proposed. The proposed method differs...
Development of portable dc voltage calibrators with additive offsets adjusting
<p>Improvement of portable equipment for controlling the DC voltage measuring channels of cyber-physical systems at the operating sites is proposed. Additive offsets and drifts make a dominant contribution to the error o...
A comparative analysis of the assessment results of the competence of technical experts by methods of analytic hierarchy process and with using the Rasch model
<p>Known scales (criteria) for assessing the competence of experts in the field of technical regulation using the method of analytical hierarchy process (AHP) and Rasch model are investigated. The main features of constr...