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灵敏度理论是系统动态特性分析中的一个重要组成部分。是用来研究某参数变化后对其动态特性影响的程度。本文仅在时域范围内,研究系统参数变化对常系数线性系统特性的影响,通过各类灵敏度来表示系统特征根、特征矢量和输出值的变化。文中介绍了系统灵敏度含义,导出了相应的公式,其中包括由于飞行器构形参数或自动器参数改变的特征根灵敏度。并通过两个实例来说明灵敏度法在飞行器动态分析中的具体应用。所得结果精确程度较好。
Sensitivity theory is an important part of the system dynamics analysis. Is used to study the extent to which a parameter changes its dynamic behavior. In this paper, we study the influence of system parameter changes on the properties of linear system with constant coefficients only in the time domain, and show the changes of system eigenvalues, eigenvectors and output values through various sensitivities. In this paper, the meaning of system sensitivity is introduced and corresponding formulas are derived, including the characteristic root sensitivity which is changed due to the configuration parameters of the aircraft or the parameters of the automaton. And through two examples to illustrate the sensitivity method in aircraft dynamic analysis of the specific application. The result is accurate.