自动化学报
自動化學報
자동화학보
ACTA AUTOMATICA SINICA
2007年
8期
829-834
,共6页
王洪坡%李杰%张锟
王洪坡%李傑%張錕
왕홍파%리걸%장곤
Maglev system%delayed speed feedback control%stability%Hopf bifurcation%center manifold%normal form
The problem of time delay speed feedback in the control loop is considered here. Its effects on the linear stability and dynamic behavior of the maglev system are investigated. It is found that a Hopf bifurcation can take place when the time delay exceeds certain values. The stability condition of the maglev system with the time delay is acquired. The direction and stability of the Hopf bifurcation are determined by constructing a center manifold and by applying the normal form method. Finally, numerical simulations are performed to verify the analytical result.
