The invention provides a system and a method for testing the dynamic stiffness of an airplane horizontal tail servo actuating mechanism. The system comprises ground maintenance and detection equipment(1), a flight control computer (2), a system tester (3), a dynamic stiffness test bed and the like (4), wherein the dynamic stiffness test bed (4) comprises a dynamic stiffness test bed body (41) anda dynamic stiffness test bed control system (42). The method comprises the following steps: drawing a required dynamic stiffness amplitude-frequency characteristic curve through loading force and corresponding position feedback, and finding out the lowest point of the dynamic stiffness amplitude and the corresponding frequency value according to the drawn characteristic curve. The system can truly and effectively measure the dynamic stiffness amplitude-frequency characteristic curve, and according to the testing method, the lowest point of the dynamic stiffness amplitude of the horizontal tail servo actuator and the frequency corresponding to the lowest point can be found out, and necessary data support is provided for analyzing the airplane servo flutter phenomenon and optimizing the horizontal tail servo actuator and a gap eliminating connecting mechanism between the horizontal tail servo actuator and a control surface.
本发明提供一种飞机平尾伺服作动机构动刚度测试系统及测试方法,测试系统包括地面维护检测设备(1)、飞行控制计算机(2)、系统试验器(3)、动刚度试验台等组成(4),动刚度试验台(4)由动刚度试验台台体(41)和动刚度试验台控制系统(42)组成。测试方法为通过加载力与相应的位置反馈绘制所需的动刚度幅频特性曲线,并根据所绘制的特征曲线找出动刚度幅值的最低点及其对应的频率值。上述测试系统能够真实有效的测取动刚度度幅频特性曲线,上述测试方法能够找出平尾伺服作动机构动刚度幅值最低点及其所对应的频率,为分析飞机伺服颤振现象、优化平尾伺服作动器及其与操纵面之间的消间隙连接机构提供必要的数据支撑。
System and method for testing dynamic stiffness of airplane horizontal tail servo actuating mechanism
一种飞机平尾伺服作动机构动刚度测试系统及测试方法
2020-04-14
Patent
Electronic Resource
Chinese
IPC: | B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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