基于压电纤维复合材料的抖振主动控制研究  

STUDY ON BUFFETING ACTIVE CONTROL BASED ON MACRO FIBER COMPOSITES

作　　者：孙杰 黄庭轩 孙禄君 朱东方 黄静 SUN Jie;HUANG TingXuan;SUN LuJun;ZHU DongFang;HUANG Jing(Shanghai Aerospace Control Technology Institute,Shanghai 201109,China;Shanghai Key Laboratory of Aerospace Intelligent Control Technology,Shanghai 201109,China)

机构地区：[1]上海航天控制技术研究所,上海201109 [2]上海市空间智能控制技术重点实验室,上海201109

出　　处：《机械强度》2020年第4期770-776,共7页Journal of Mechanical Strength

基　　金：国家自然科学基金重点项目(11232012),国家自然科学基金项目(11372320)资助。

摘　　要：压电纤维复合材料(MFC)在气动弹性抖振控制中具有很好的应用前景。对MFC驱动器采用载荷比拟方法进行建模,使用偶极子格网法模拟空气动力,利用速度负反馈算法设计控制律。研究了气流速度对垂尾固有特性的影响以及抖振主动控制的控制机理。结果表明:气流速度会影响垂尾固有特性的变化;颤振速度前附加气动力中以包含与速度反相的部分为主,对系统起到附加阻尼的作用;压电驱动力在颤振速度前甚至可以对抖振闭环系统做正功,但却能够激发附加气动力消耗更多的能量,从而使系统总耗能增大。研究结果可为实际抖振主动控制及应用提供参考。Macro fiber composites(MFC)have a good application prospect in aeroelastic buffeting control.The MFC actuator was modeled using the load simulation method.The aerodynamic forces were simulated by the doublet-lattice method and the control laws were designed applying the negative velocity feedback algorithm.The influences of airflow velocity on the inherent characteristics of vertical tail and the control mechanism of buffeting active control were studied.The results show that the airflow velocity affects the inherent characteristics of the vertical tail.The additional aerodynamic force,mainly including the part which is inverse phase with the velocity,plays an additional damping role on the system below the flutter velocity.The piezoelectric driving force can even do positive work,but can make the additional aerodynamic force consume more energy so that the total energy consumption of the system increases.The results can provide useful reference for the practical buffeting active control and its application.

关 键 词：抖振控制 压电纤维复合材料 气流速度 速度负反馈 控制机理 

分 类 号：V215.3[航空宇航科学与技术—航空宇航推进理论与工程]