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为实现直升机旋翼桨叶挥舞角的测量,提出一种基于最小二乘法的测量方法。该方法使用双目视觉技术实现旋翼桨叶特征点的提取;使用最小二乘法对特征点三维信息进行处理,得到转轴方向向量和旋翼中心等参数;根据所得参数建立旋翼坐标系,并计算得到挥舞角大小。
In order to measure the waving angle of a helicopter rotor blade, a least square method based measurement method is proposed. The method uses the binocular vision technology to extract the rotor blade’s characteristic points. The least squares method is used to process the three-dimensional information of the characteristic points to obtain the parameters of the rotor’s orientation vector and the rotor center. The rotor coordinate system is established based on the obtained parameters and the waving Angle size.