Xiaohao CHEN, Weihua MA. Analysis on the Effect of Controller Time Delay on the Stability of Maglev System[J]. Electric Drive for Locomotives, 2019,(2):139-143,147.
Xiaohao CHEN, Weihua MA. Analysis on the Effect of Controller Time Delay on the Stability of Maglev System[J]. Electric Drive for Locomotives, 2019,(2):139-143,147. DOI: 10.13890/j.issn.1000-128x.2019.02.029.
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.
关键词
磁浮系统控制器时滞Hopf分岔试验台时滞临界值磁浮列车
Keywords
maglev systemcontroller time delayHopf bifurcationexperimental benchdelay critical valuemaglev train
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