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一、概述众所周知,天线座结构固有频率是伺服务系统的重要参数,它直接影响伺服系统的带宽。过去那种只考虑驱动系统弹性的小型雷达固有频率计算方法,虽然简单,但精度很宽。如果采用自由度较多的集中的参数的系统模型,用计算机求解系统矩阵的特征值和特征向量,虽然精度较高,但计算周期较长,往往不能满足产品方案论征的需要。特别是
I. Overview As we all know, the natural frequency of the antenna base structure is an important parameter servo system, which directly affects the servo system bandwidth. In the past, the method of calculating the natural frequency of a small radar, which only considered the elasticity of the drive system, was simple but accurate. If we adopt the systematic model of centralized parameters with more degrees of freedom, solving eigenvalues and eigenvectors of system matrices by computer, although the precision is high, but the calculation period is long, it often can not meet the needs of product solution. especially