A helicopter blade waving and shimmy decoupling position measuring method based on fiber bragg grating sensors comprises the following steps that a plurality of fiber bragg grating sensors are evenly pasted on the upper surface and the lower surface of a to-be-measured section of a helicopter blade in parallel from the front edge to the rear edge of the blade; flapping and shimmy bending moments are loaded on the blades respectively, and strain values corresponding to the flapping and shimmy bending moments are obtained through measurement; according to the position of the sensor and strain measurement data thereof, adopting a Kriging interpolation method to carry out interpolation on point positions with the same spacing, and obtaining an estimated value of a corresponding spatial position; establishing shimmy/flapping and flapping/shimmy decoupling coefficient evaluation functions; global traversal is carried out on the interpolation result, evaluation function values are calculated and sorted, and finally a decoupling position is determined.
一种基于光纤光栅传感器的直升机桨叶挥舞和摆振解耦位置的测定方法,包括以下步骤:在直升机桨叶待测剖面上下表面,自桨叶前缘向后缘均匀平行粘贴若干光纤光栅传感器;对桨叶分别加载挥舞和摆振弯矩,测量得到与之对应的应变值;根据传感器位置及其应变测量数据,采用克里金插值法在相同间距的点位上进行插值,获得对应空间位置的估计值;建立摆振/挥舞和挥舞/摆振解耦系数评估函数;对插值结果进行全局遍历,计算评估函数值并进行排序,最终确定解耦位置。
Fiber bragg grating sensor measuring method for helicopter blade waving and shimmy decoupling position
直升机桨叶挥舞与摆振解耦位置的光纤光栅传感器测定方法
31.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / 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 |
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