摘要
AbstractBoth theoretical and experimental investigations are performed for a scheme for“ flutter taming”- semi-active control of structural nonlinear flutter. For atwo-dimensional nonlinear flutter system, a digital simulation method is used to verify theprinciple of semi-active flutter control and to study the response characteristics of theclosed loop flutter system. Simulation results show that by adjusting automatically thenonlinear stiffness parameter of the flutter system, the amphtude of the flutter responsecan be suppressed. In accordance with the theoretical analysis, a wind tunnel test model forsemi-active flutter control is designed. A micromotor-slide block system serves as theparameter control executive element with the monitoring of respf,are signal and the con-trolling of micromotor performed by a microcomputer. Wind tunnel tests confirm that thenonlinear flutter can be controlled effectively by this technique.
AbstractBoth theoretical and experimental investigations are performed for a scheme for“ flutter taming”- semi-active control of structural nonlinear flutter. For atwo-dimensional nonlinear flutter system, a digital simulation method is used to verify theprinciple of semi-active flutter control and to study the response characteristics of theclosed loop flutter system. Simulation results show that by adjusting automatically thenonlinear stiffness parameter of the flutter system, the amphtude of the flutter responsecan be suppressed. In accordance with the theoretical analysis, a wind tunnel test model forsemi-active flutter control is designed. A micromotor-slide block system serves as theparameter control executive element with the monitoring of respf,are signal and the con-trolling of micromotor performed by a microcomputer. Wind tunnel tests confirm that thenonlinear flutter can be controlled effectively by this technique.
