从无人机的数学模型出发，在特征点作小扰动线性化处理，采用特征值配置法对线性化对象设计线性控制器。
UAV mathematics model is linearized by little disturbance method in equilibrium operating points, then linear controllers are design by applying eigenvalue configuration method to the linear models.
在单机无穷大系统中，运用小扰动分析法推导出了PSVC的一阶惯性模型。
In a single generator infinite system, the one order inertia model of PSVC is derived with the small disturbance method.
利用两流体模型、小扰动原理和线性一阶齐次方程组有解的条件，得到了气液泡状流型下的压力波色散方程。
Using two-flow model, small perturbation theory and solvable conditions of one-order linear equations, a dispersion equation of pressure wave in horizontal air-liquid bubbly flow was proposed.
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