本文通过对锚泊非线性水动力系统进行分析，首次将两种方法取得的频率响应函数结果进行对比。
In this paper, the frequency response functions obtained by using these two methods are first compared through analysis of non-linear mooring system.
首先，用多尺度法导出弱非线性强迫激励系统的频率响应函数。
Firstly, by means of multiple scale method the frequency response function of weakly nonlinear vibration system is derived.
基于广义频率响应函数矩阵，讨论了多变量非线性系统的稳定性问题。
The stability of multivariable nonlinear control system is discussed in connection with the generalized frequency response function matrix.
该方法利用阶跃输入信号获取非线性增益的强一致性估计；利用不同幅值的周期脉冲输入信号获取线性子系统脉冲响应函数的强一致性估计。
The nonlinear gain and the impulse response functions of linear subsystem be obtained by using the step-changeds and cyclic impulse with different amplitudes as input signals.
非线性系统在不同力幅的正弦激励时，其频率响应函数将随力幅而变化。
When a series of different levels of sine excitation force is imposed on a non linear testing structure, the response data vary with the force.
非线性系统在不同力幅的正弦激励时，其频率响应函数将随力幅而变化。
When a series of different levels of sine excitation force is imposed on a non linear testing structure, the response data vary with the force.
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