A MIMO hybrid model of structural response control, which combines adaptivefeedfor-ward control and feedback control, was developed and then applied in a helicopter model toeliminate the dual-frequency harmonious vibr...A MIMO hybrid model of structural response control, which combines adaptivefeedfor-ward control and feedback control, was developed and then applied in a helicopter model toeliminate the dual-frequency harmonious vibration at cabin seats. In implementation, an AOEF(Acceleration Output Extended Feedback) controller for the MIMO case was designed to add enoughdamping to the control path so that the convergence rate of the FXLMS algorithm could be obviouslyimproved. The corresponding FXLMS algorithm for the control path of closed loop was developed also.The numerical results on the finite element model of a helicopter indicated that with hybridcontrol, responses at four rows of seats could be controlled with two actuators and the adaptivecontrollers got a quicker convergence rate.展开更多
基金Aeronautical Science Foundation of China ( 99B5 2 0 11)
文摘A MIMO hybrid model of structural response control, which combines adaptivefeedfor-ward control and feedback control, was developed and then applied in a helicopter model toeliminate the dual-frequency harmonious vibration at cabin seats. In implementation, an AOEF(Acceleration Output Extended Feedback) controller for the MIMO case was designed to add enoughdamping to the control path so that the convergence rate of the FXLMS algorithm could be obviouslyimproved. The corresponding FXLMS algorithm for the control path of closed loop was developed also.The numerical results on the finite element model of a helicopter indicated that with hybridcontrol, responses at four rows of seats could be controlled with two actuators and the adaptivecontrollers got a quicker convergence rate.
