风洞模型支杆系统设计及振动主动控制

Design of Sting and Active Control of Vibration in Wind Tunnel

研究了悬臂梁支撑系统在强流场环境下的振动抑制问题,并且基于跨声速实验设备中的模型支杆实际振动情况,采用压电陶瓷作为执行器设计了一套抑振器系统。对模型支杆进行了设计,对抑振器的轴向及周向安装位置进行了优化,以获得最佳的抑振器输出性能。基于PD控制算法,搭建了一套实验室模拟系统,在模型自由端施加加速度振幅为0.5 g,1.3 g,2 g的激励,实验结果表明,剩余振幅比为12%,10%,26%,取得了很好的振动抑制效果。

In this paper, the vibration suppression of cantilever-beam support system under strong flow field is studied, and piezoelectric ceramic is used as actuator to design a set of vibration suppressor system, based on the actual vibration condition of the model support system in transonic facility. The model support sting is redesigned, and the axial and circumferential installation position of the active vibration damper is optimized, so that the output performance of the active vibration damper is the best.Based on the PD control algorithm, a laboratory simulation system is set up, and the excitations with acceleration amplitudes of 0.5g, 1.3g, and 2g are applied to the free end of the model. The experimental results show that the residual amplitude ratios are 12%, 10%, and 26%. A good vibration suppression effect is achieved.