Analysis on the Effect of Controller Time Delay on the Stability of Maglev System
In order to study the effect of the time delay on the stability of EMS maglev train and solve the problem of instability of maglev train, a single degree of freedom electromagnetic suspension model based on double loop feedback control system was established. Based on the time delay of controller, t...
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| Main Authors: | , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2019-03-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2019.02.029 |
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| Summary: | In order to study the effect of the time delay on the stability of EMS maglev train and solve the problem of instability of maglev train, a single degree of freedom electromagnetic suspension model based on double loop feedback control system was established. Based on the time delay of controller, the Routh-Hurwitz stability criterion was used to determine the characteristic root distribution of the system. The critical threshold of Hopf bifurcation was provided quantitatively. It was pointed out that when the controller delay was larger than the critical value, the system equilibrium point was no longer stable. A single-degree-of-freedom maglev bench was developed. The correctness of the theoretical analysis was verified by numerical simulation and bench test. |
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| ISSN: | 1000-128X |