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本文在文［１］的基础上，提出一种改进的综合运用动力缩聚与动力修改技术的方法，为提高系统修改矩阵的识别精度，利用先验信息，即有限元模型缩聚后的质量、刚度阵做为迭代初值，建立迭代方程修正质量（或刚度）阵．经仿真计算与实物试验结果表明，该方法既放松了对阻尼所做的假定，又提高了模型的精度．
Based on [1], this paper proposes an improved method of comprehensively using dynamic condensation and dynamic modification techniques. In order to improve the recognition accuracy of the system modification matrix, the priori information, namely the mass and stiffness of the finite element model after polycondensation, As an iterative initial value, an iterative equation is established to correct the mass (or stiffness) matrix. The results of simulation and in-kind experiments show that this method not only relaxes the assumption of damping but also improves the accuracy of the model.