Robust adaptive vibration control of a flexible structure.
Different types of L1 adaptive control systems show that using robust theories with adaptive control approaches has produced high performance controllers. In this study, a model reference adaptive control scheme considering robust theories is used to propose a practical control system for vibration suppression of a flexible launch vehicle (FLV). In this method, control input of the system is shaped from the dynamic model of the vehicle and components of the control input are adaptively constructed by estimating the undesirable vibration frequencies. Robust stability of the adaptive vibration control system is guaranteed by using the L1 small gain theorem. Simulation results of the robust adaptive vibration control strategy confirm that the effects of vibration on the vehicle performance considerably decrease without the loss of the phase margin of the system.
Aerospace Engineering Department, P.O. Box 16765-3381, K.N. Toosi University of Technology, Tehran, Iran. Electronic address: khoshnood@kntu.ac.ir.
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AM
Khoshnood
Aerospace Engineering Department, P.O. Box 16765-3381, K.N. Toosi University of Technology, Tehran, Iran.
H M
HM
Moradi
Flexible structure; L1 small gain theorem; Model reference adaptive system; Robust adaptive control; Vibration control