Simulation and Experimental Research on Adaptive Active Vibration Control for Test Model in wind tunnel

The tail support test system of wind tunnel test will produce vibration under unsteady wind load excitation. The vibration of larger magnitude will threaten the test safety and affect the test results. In order to suppress the vibration of the model and support system, an active vibration suppression control method based on adaptive filtering algorithm is studied. The structure and working principle of adaptive feed forward control and adaptive internal model control based on adaptive filtering algorithm are analyzed, and the control effect and feasibility of the two control algorithms are compared through simulation of the control algorithm. In order to verify the effect of active vibration control, an experimental system of active vibration control based on adaptive internal model control algorithm was established with cantilever beam structure as the control object. Signal generator is used to simulate system excitation and vibration response is obtained by acceleration sensor, which verifies the actual control effect of the control algorithm. The results show that the internal model control method based on adaptive filtering algorithm has a good active control effect on the vibration of the structure, and can be easily applied in engineering practice, with the characteristics of simple implementation and fast operation.