参数变化

According to this theory, the origin of return voltage in oil-paper insulation system is analyzed. Then two equivalent extended Debye models, a simplified one as well as a complicated one, are established. Based on the dielectric polarization theories, the parameters in the Debye models are analyzed, and its influence to the curve of return voltage are also discussed.

本文首先从极化过程的基本原理出发，给出了回复电压法的理论基础，并由此分析油浸式电力变压器出现回复电压的原因；然后建立了两种等效扩展德拜模型，结合介质极化理论分析了模型中电路参数的意义，并讨论了各参数变化对回复电压曲线的影响。

From the opposite direction of the parameter variation, the chaotic quasi-attractor suddenly changes to a chaotic quasi-transience due to the sudden appearance of a stable elliptic island chain as the leaking hole inside it. This resembles the conventional crises.

从相反的参数变化方向看，混沌类吸引子在此参数临界值由于它内部突然出现一个稳定的椭圆岛链作为逃逸孔洞而突然转变为混沌类瞬态，这类似于传统的激变行为。

Additionally, considering the additive methods with one evaluation function, we give the range of weights that ensure the fixedness of alternatives rank by the limited conditions on evaluation functions making sure the rank invariability on alternatives.

该方法通过给出有限方案集的非劣方案、潜在最优方案、邻近潜在最优方案以及竞争方案等定义，以Euclidean空间的距离为测度，用可变参数的最小参数变化量来描述任意方案到当前最优方案间的距离，给出了以距离为基础的定量化敏感性指数，并以竞争方案到当前最优方案的距离来衡量当前最优方案的敏感性。

When shape analysis is finished, the mechanical characteristics of hyperboloid shape membrane structure are studied and the influence of different parameter to the character of the structure discussed.

在形态分析的基础上，对双曲面索膜结构进行静力性能分析，计算该结构在不同参数下的结构响应，并研究各种基本参数变化对索膜结构受力性能产生的影响。

Using the method of Laplace transform, the solutions of impulse loading condition and step loading condition were got.

在两种常见的排污条件下——瞬时点源和一维恒定源，运用拉普拉斯变换得到了模型的解析解；结合室内静态和动态试验，确定了模型中各参数的取值方法；并分析了几个主要参数变化对模拟结果的影响。

At first, an approximated mathematical model is presented. Then, the system manager can compute the optimal control policy via the method of successive approximation. Based on the above-mentioned algorithm, we design an intelligent system with feedback control to regulate the allocation of limited channels of trunk circuit. This system will continuously detect the status of whole cellular network. Once the system parameters cross the predefined threshold, the recomputing mechanism will be activated.

首先针对系统的近似数学模型先將其定义出来，然后就可以用连续逼近法將最佳控管决策计算出来，这样的最佳决策演算法我们把它设计在一个有迴授机制的智慧型决策系统裹，此决策系统將不断地侦测行动通讯网路运作的情形，一旦网路参数变化超过某个预定的临界值时，整个最佳决策演算法將被启动，系统的近似数学模型將依新的参数重新定义，接下来同样地写出最佳方程式並用连续逼近法计算出新的最佳控管决策。

Numerical computation and sensitive analyses show the influence of changes of some parameters.

数值计算和参数灵敏度分析的结果，表明了各参数变化对可持续性的影响。

Simulation and experiment results show that the proposed algorithms can identify the parameters of IM exactly, and avoid the state estimation impacted by parameter variety.

仿真和实验研究表明，上述方法均能实现对电机参数的准确辨识，从而避免状态估计受电机参数变化的影响。

Parametric optimization is carried out for the rule controller and its robustness to changes in parameters of the controlled object is explored.

本文进行了该规则控制器的参数寻优，考察了它对于被控对象参数变化的鲁棒性，并与PID控制器和模糊控制器进行了比较。

The state recognizer is used to rectify the variations of system's parameters and the system nonlinear.

系统通过状态观测器修正系统因参数变化和非线性引起的误差，并应用正交实验法进行参数整定。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。