首先用质量缩聚法建立了弹引系统的初步振动模型,然后对弹引系统进行模态分析实验,获得系统的一些精确模态参数。再利用这些精确的模态参数对理论上建立的离散系统模型进行修正,以提高系统振动模型的准确性。最后以弹底压力为弹引系统振动模型的输入,求解引信内传爆管装置处的加速度响应。 Firstly, the initial vibration model of the missile guidance system was established by masscondensation method. Then the modal analysis experiments of the missile guidance system were carried out to obtain some accurate modal parameters of the system. The precise modal parameters are used to correct the discrete system model established theoretically to improve the accuracy of the system vibration model. Finally, the pressure at the bottom of the shell is used as the input of the system vibration model to solve the acceleration response at the squib device inside the fuse.