A 7-DOF nonlinear dynamic model is established for a semi-active suspension bogie installed with MR damper. The active control law of the system is designed based on the LQR control theory. Then, a semi-active control law of the system is proposed using the clipped LQR control law. The dynamical responses of the controlled suspension system with both active and semi-active control are worked out to compare with that of the uncontrolled system. The results show that both the active and semi-active control can enhance the critical speed of the system. Considering the uncertainty in actual suspension system, the robust stability of the bogie model with uncertain parameters is also analyzed. The lateral stability criteria for both the controlled and uncontrolled systems with uncertain parameters are derived using the Lyapunov stability theory.
Semi-active Control and Its Robustness for a Bogie Model with Uncertain Parameters
Lect. Notes Electrical Eng.
Proceedings of the 1st International Workshop on High-Speed and Intercity Railways ; Kapitel : 2 ; 15-29
2012-01-01
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Semi-active Control and Its Robustness for a Bogie Model with Uncertain Parameters
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