So knowing the distributing law of the strain field and how the strain field changes with the actuator ' s size is necessary in this text , electronic speckle pattern interferometry is used to test different strain fields produced by bonded actuators with different size . after the fringe is thined , its spine is got . based on the theory of speckle metrology , the displacement from the fringe is got , at last the strain field and how the strain field changes with the actuator ' s size is got 本文用电子散斑干涉法对不同尺寸的粘贴型压电驱动器的诱发应变场进行了实验研究，将所得的干涉条纹进行细化处理，得到干涉条纹的骨脊图，根据散斑干涉计量术的原理对干涉条纹骨脊图进行数值计算，得到诱发应变场的位移图以及粘贴型压电驱动器的尺寸变化对诱发应变场的影响。
