Application of D-Decomposition Technique to Selection of Controller Parameters for a Two-Mass Drive System

Radosław Nalepa, Karol Najdek, Karol Wróbel and Krzysztof Szabat
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Radosław Nalepa: Department of Electrical Power Engineering, Wroclaw University of Science and Technology, PL50370 Wrocław, Poland
Karol Najdek: Department of Electrical Power Engineering, Wroclaw University of Science and Technology, PL50370 Wrocław, Poland
Karol Wróbel: Department of Electrical Machines, Drives and Measurements, Wroclaw University of Science and Technology, PL50370 Wrocław, Poland
Krzysztof Szabat: Department of Electrical Machines, Drives and Measurements, Wroclaw University of Science and Technology, PL50370 Wrocław, Poland

Energies, 2020, vol. 13, issue 24, 1-21

Abstract: In this work, issues related to the application of the D-decomposition technique to selection of the controller parameters for a drive system with flexibility are presented. In the introduction the commonly used control structures dedicated to two-mass drive systems are described. Then the mathematical model as well as control structure are introduced. The considered structure has only basic feedbacks from the motor speed and PI type controller. Due to the order of the closed-loop system, the free location of the system’s poles is not possible. Large oscillations can be expected in responses of the plant. In order to improve the characteristics of the drive, the tuning methodology based on the D-decomposition technique is proposed. The initial working point is selected using an analytical formula. Then the value of controller proportional gain is decreasing, until the required value of overshoot is obtained. In the paper different advantages of the D-decomposition technique are presented, for instance calculation of global stability area for the selected gain and phase margin, the impact of parameter changes, and additional delay evident in the system. Theoretical considerations are confirmed by simulation and experimental results.

Keywords: electric drives; two-mass system; torsional vibrations; D-decomposition (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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