Experimental Validation on Active Vibration Reduction System for 2.4m×2.4m Transonic Wind Tunnel Model

Abstract An active vibration reduction system has been developed to solve pitch vibration problems of the force test models in 2.4m × 2.4m transonic wind tunnel. The twin flexure hinges structure types and PD control algorithm are used in the system. The constitution of active vibration reduction system is presented. The results of Ground Tests and wind tunnel tests are given. The influence of the system on the static signal of the balance and its performance are discussed. The ground tests show that the system can increase the damping of the sting more than tenfold. It is shown that the vibration amplitude decreases by more than 70% in wind tunnel tests. The wind tunnel tests also reveal that the active vibration reduction system has relatively strong performance on the suppression of the model vibration.