Sheremet O. Synthesis of electromechanical systems on the base of discrete time equalizer

The dissertation is devoted to the creation of unified methodology for the synthesis of control systems for electric drives, based on the condition of providing the desired dynamic properties on the output coordinate, given graphically in the form of transition function or a set of points. The discrete regulator, which provides the ability to tuning up on quantized de-sired transition functions of finite duration, is called a discrete time equalizer. A mathematical apparatus is proposed that allows performing synthesis of automatic control systems based on discrete time equalizer both with full compensation for control object dynamic properties (idealized variant) or with using the modified structural schemes principle of symmetry. The integrating unit is used as inverse transform modification block. To compensate for parametric and coordinate disturbances, a combined control structure has been developed, which includes two discrete time equalizers: main and compensating. The synthesis of electromechanical systems with direct current (DC) motors on the basis of discrete time equalizer (servosystem, interconnected system, system with decreased influence of the backlash, two-zone speed regulation system) was performed and a study of the obtained results was carried out by means of mathematical modeling. Synthesis of the vector control system of alternating current (AC) electric drive based on discrete time equalizer was realized and a study of the obtained results was carried out by means of mathematical modeling. Obtained generalized transfer functions for control objects in the reactive and active loops and the transfer functions of their inverse models allow synthesizing the systems of vector control of AC electric drives on the base of discrete time equalizer in relative units for a wide range of industrial asynchronous motors. To carry out experimental research, a laboratory test bench was created, which allowed the technical implementation of the of DC motor speed automatic control system, synthesized on the base of discrete time equalizer. Proposed technics of the basic values assignment and the desired transition function presentation in relative coordinates allows user to input data in accordance with predefined template, which is convenient for performing further verification for the possibility of physical implementation by support vector machine (SVM) method.