Open AccessAnalysis of Gap Time-Delay in Maglev Control System
Author(s) -
Peng Lin,
Hengkun Liu,
Wenwu Zhou
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1487/1/012038
Subject(s) - maglev , control theory (sociology) , stability (learning theory) , signal (programming language) , control system , levitation , range (aeronautics) , limit (mathematics) , computer science , engineering , mathematics , control (management) , mechanical engineering , mathematical analysis , artificial intelligence , machine learning , aerospace engineering , electrical engineering , magnet , programming language
In the maglev control system, signal filtering, A/D sampling and communication all bring time-delay to the gap signal, which will affect the performance of the levitation control. In order to analyze this effect, a single-degree-of-freedom maglev system model is established. The state feedback control method is used to control the maglev system, and the stability of the closed-loop system is analysed and he stable region of control parameters is studied. Gap time-delay is introduced into the closed-loop system model, and the influence of time-delay on the stability range of control parameters is analyzed. It is concluded that the gap time-delay will reduce the stability range of control parameters, the larger the time-delay of position signal is, the smaller the lower limit of the stability region of differential feedback coefficient is and the smaller the stability region is. The simulation results are used to verify the validity of the theoretical analysis.