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本发明公开了一种基于应变传感器的天线结构变形的间接测量方法,包括:1)基于模态坐标评价向量按照参与变形程度对备选模态进行排序,根据模态删除前后变形向量线性相关性得到能够描述天线结构变形的最小完备模态集;2)采用有效独立法进行传感器布置,删除对目标模态的独立性贡献最小的自由度,直到剩余自由度数目与传感器数目相同;3)根据小变形情况下天线结构位移与应变之间为线性关系,利用数值仿真或实测数据计算映射矩阵;4)根据应变和位移之间的对应关系,利用布置在指定位置传感器测量出天线结构应变后通过映射矩阵得到天线结构的位移。本发明的方法可以使用应变传感器间接地测量出天线的变形,且计算量小,求解速度快、实时性高。
The present invention discloses an indirect measurement method of antenna structure deformation based on strain sensor, which comprises the following steps: 1) ranking modalities of alternative modal according to the degree of participating deformation based on modal coordinate evaluation vectors, and according to modal linear regression of deformation vectors before and after deletion Get the smallest complete modal set capable of describing the deformation of the antenna structure; 2) arrange the sensor with an effective independent method to remove the degree of freedom that contributes least to the independence of the target mode until the remaining number of degrees of freedom is the same as the number of sensors; 3) Small deformation case of antenna structure displacement and strain of a linear relationship between the use of numerical simulation or measured data to calculate the mapping matrix; 4) According to the correspondence between the strain and displacement, arranged in the specified position sensor to measure the structure of the antenna strain after passage Mapping matrix to get the displacement of the antenna structure. The method of the invention can indirectly measure the deformation of the antenna by using the strain sensor, and has the advantages of small calculation amount, quick solution speed and high real-time performance.