Experimental study on the piezoelectric active vibration reduction system of wind tunnel aerodynamic models

风洞测力模型压电主动减振系统试验研究

¹ School of Sciences, Chang'an University, Xi'an 710064, China
² School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

Received: 28 February 2024

Abstract

During the wind tunnel model aerodynamic test, the slender cantilever model tail support system is susceptible to low-frequency and high-amplitude resonance caused by airflow separation and turbulence, which has a significant impact on test data quality. To effectively suppress the flow-induced vibration response of wind tunnel models, a hybrid control algorithm combining the filtered-x least mean square (FxLMS) algorithm and the linear active disturbance rejection control (LADRC) controller is proposed. Subsequently, the corresponding controller is designed to build a piezoelectric active vibration reduction system, and the active vibration control ground tests of the wind tunnel aerodynamic model are performed. The results show that the proposed hybrid control algorithm fully utilizes the advantages of the FxLMS algorithm and the LADRC controller, as well as having strong anti-disturbance performance, ensuring reliable measurement of the wind tunnel model aerodynamic characteristics.

摘要

在风洞模型测力试验时, 细长悬臂式模型-尾撑系统极易因气流分离和湍流而发生低频、大幅共振, 严重影响了测试数据质量。为了高效抑制风洞测力模型的流致振动响应, 提出了一种将自适应滤波算法和线性自抗扰控制器相结合的混合控制算法。设计相应的控制器搭建压电主动减振系统, 开展了风洞测力模型振动主动控制地面试验研究。结果表明, 所提混合控制算法充分发挥了自适应滤波算法和线性自抗扰控制器各自的优势, 并且具有很强的抗扰性, 保障了风洞模型气动特性的稳定测量。