将可靠性分析三参数法与摄动概率有限元法相结合，提出了一套求解结构体动态响应概率分布的方法。
In this paper, a method USES to calculate structure dynamic response is proposed, which is based on the three parameter reliability model and perturbation probabilistic finite element method.
对于连续与离散积分型变结构控制，分别从理论分析计算与数值仿真两种途径得到了典型惯性过程的参数可摄动范围。
The perturbation domains of parameters in typical inertial process are obtained by theoretical analysis and numerical simulation respectively for continuous and discrete integral VSC.
最后，引入现代控制技术—滑模变结构控制，该控制方法在系统受到参数摄动和外干扰时具有不变性。
Lastly, the modern control technology-sliding mode control is introduced. Sliding mode control has invariability when the parameters change and the disturbances exist.
本文研究了多组耦合模态结构动力学参数修改的子空间摄动法。
A subspace perturbation method for structural dynamic modification of several groups of coupled-modes vibration systems is studied.
将故障结构的参数变化看作是对完好结构参数的“摄动”，以圆截面双层空间刚架的裂纹故障为例对其进行了概率诊断。
It regards the variation of parameter of fault structure as a perturbation on the perfect structure. Crack fault of the double decker space frame is probability diagnosed as an example.
利用小参数摄动法，建立了随机结构在随机激励下的二阶摄动随机势能泛函。
Based on the method of small parameters perturbation of 2nd order, the stochastic functional of potential energy for structures with stochastic stiffness under stochastic stimulus is derived.
利用小参数摄动法，建立了随机结构在随机激励下的二阶摄动随机势能泛函。
Based on the method of small parameters perturbation of 2nd order, the stochastic functional of potential energy for structures with stochastic stiffness under stochastic stimulus is derived.
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