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从工程中柔性体构件加速度测量出发,探索一种新型的基于分布式应变测量的加速度测量方法.该方法基于测量的分布式应变,转化得到离散点的曲率信息,使用数值方法连续化曲率,重构出曲线形状,利用二次曲线拟合出所测量点的运动轨迹,求导得出二次项系数,该系数的2倍即是加速度大小.通过设定理想模型进行了相关误差分析,分析了该方法各步骤的精度,从理论上验证了该方法的可行性,为下一步实验提供了依据和实验设计基础.
Based on the measurement of distributed strain, a new type of acceleration measurement method based on distributed strain measurement is proposed based on the measurement of the acceleration of flexible members in engineering. The curvature information of the discrete points is transformed based on the measured distributed strain. The curvature, The curve shape is constructed, and the quadratic curve is used to fit the motion trajectory of the measured point, and the quadratic coefficient is obtained, which is twice as high as the acceleration.The correlation error analysis is done by setting the ideal model The accuracy of each step of the method proves the feasibility of the method theoretically, which provides the basis and experimental design basis for the next experiment.