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Stress-deflection angle measurement of the aircraft wings using a biaxial inclination angle sensor

机译：使用双轴倾角传感器测量机翼的应力-偏转角

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The flight pose of an aircraft is affected seriously by the stress-deflection angles of aileron and tail fin. Traditional manual measurement suffers from various error sources. Here, we propose a novel high precision measuring method. A biaxial inclination angle sensor is used to calculate the unit-normal-vector of the measuring plane. Levelling is the first and necessary step to make zero for X and Y axes. Those values of the two axes are eliminated by the space coordinate transformation between rotation shaft and rotary surface, meanwhile, the changing value of Z axis is utilized to figure out the space stress-deflection angle. The proof-of-concept experiments verify that the improved automation and precision can be achieved by the proposed technique. Furthermore, the measurement is not constrained by the shape of the curved surface of the object. Those advantages make the method suitable in space deflection angle measurement of giant space rotation structure, especially in aerospace field.
机译：飞机的飞行姿态受到副翼和尾鳍的应力偏转角的严重影响。传统的手动测量存在多种误差源。在这里，我们提出了一种新颖的高精度测量方法。双轴倾角传感器用于计算测量平面的法线向量。调平是使X和Y轴归零的第一步，也是必要的步骤。通过旋转轴与旋转表面之间的空间坐标变换消除了这两个轴的这些值，同时，利用Z轴的变化值来计算空间应力-偏转角。概念验证实验证明，所提出的技术可以提高自动化程度和精度。此外，测量不受物体的弯曲表面的形状的约束。这些优点使得该方法适用于大型空间旋转结构的空间偏转角测量，特别是在航空航天领域。

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