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维基
百科
作用积分 [zuò yòng jī fēn]
action integral
- 文摘:引进细长体的假定，把三维的流体运动问题化成了二维的非定常问题，前面剖面对后面剖面的干扰作用用积分表示，改善了切片理论。
Abstract: Based on the slender-body assumption, the 3-D flow is approximated to a set of unsteady 2-D ones. - 文摘:提出一种新型的非线性积分器，给出它的数学模型，并用谐波线性化原理讨论它的频率特性，其幅频特性起积分作用，而相位滞后仅27.6°，高次谐波分量小，抗干扰能力强.应用这种积分器设计了一个双目标优化的二次优化系统.仿真结果表明，系统的控制性能好，具有广泛的应用前景.
Abstract: It provides a kind of new nonlinear integrator and its mathematical model.Its frequency responses is disscussed by the harmonics Linearization method.Its phase Lag is found to be only 27.6°,All high order harmonics are very small,And it is very resistant to disturbances.By Using it,an two-objective optimum control system is designed.It has very good control performances and will have good prospects in application. - 摘要针对混凝土坝变形的时变特性，构建了考虑时变作用的坝体水压分量，采用积分回归法建立了温度分量。
According to the time-varying behavior of concrete dam's deformation, the water pressure component is established considering the time-varying action and the temperature component is established by the integration regression method.
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