查询词典 nonlinear oscillations

Nonlinear Oscillations in Power Systems.

应用分支理论研究电力系统电压稳定。

The research result shows that the sliding friction makes nonlinear oscillations about an average value when the depth of the particulate pile with 2 mm particulate diameter is greater than 0.5 to 2 times the diameter of the container.

研究发现，厚度为容器直径的0·5到2倍之间，粒径为2mm的颗粒堆，对探测棒的滑动摩擦力在一个平均水平上随时间作非线性振动。

The results are indicated that only the strength of gap junction is large enough, can the abnormal oscillation propagate to synchronize the other neurons around and the process is chaotic and complex;the nonlinear and complexity of the oscillations with strong strength of gap junction are larger than that of oscillation with weak strength of gap junction.

结果表明：只有电突触耦合达到一定强度时，异常振荡才能传导并引起神经元的同步振荡；传导活动是混沌和复杂的；在突触耦合强度较强时的神经元活动的非线性和复杂性要强于其在突触强度较弱时的。

However, numerical modeling for nonlinear seismic waves is faced with problems such as steep gradients, shocks and unphysical oscillations. Accordingly, some special treatments have been presented to solve these problems. However, in our knowledge, there is no effective method to overcome these problems by far.

非线性弹性波的数值模拟存在陡峭间断面、数值振荡以及误差的指数级增长等现象而破坏数值解的稳定性、收敛性，能否消减上述现象的不利影响成为制约数值方法有效与否的重要因素。

It is found that the population difference between two BECs exhibits periodic Rabbi oscillations with a period, which depends upon not only interatomic linear and nonlinear interactions but also the initial state of two BECs.

发现由原子隧穿导致的两个凝聚间的布居差表现出周期性的拉比振荡，其振荡周期不仅依赖于原子间的相互作用，还取决于系统的初态。

Then, the relations between the general nonlinear systems and its adjoint system were discussed, from which the sufficient and necessity conditions for exact linearization of general nonlinear control systems were obtained. The conclusions include the corresponding results of the affine nonlinear systems.

引入一类相关的仿射非线性系统，通过研究一般非线性系统与其伴随系统的关系，利用伴随系统的精确线性化结论，获得一般非线性系统精确线性化的充要条件，其结果包含了仿射非线性系统的已有结果。

Therefore, the robust feedback linearization control is obtained.(2) For affine nonlinear systems with parameter uncertainties, a novel nonlinear state observer is constructed. Under nonlinear feedback control based on observed state, the regulated system state is guaranteed to enter and remain in a enough small neighborhood of origin.

对仿射非线性系统，考虑其参数的不确定性，设计了一种新型的非线性状态观测器，通过调节观测器和控制器的参数，可使系统在基于观测状态的控制下，调节状态到原点的一个足够小表示领域内。

In allusion to dynamic nonlinear large-scale industrial processes, to bring up gained the method of decentralized identification for the strong consistency estimates of the divisible steady-state models, it is used that property of polynomial can infinitely approach to the nonlinear function and in optimization processes use step signals as input signals, the divisible steady-state models of dynamic nonlinear large-scale industrial processes, and the cognizable conditions are obtained.

针对动态非线性大工业过程，提出了得到其可分稳态模型强一致性估计的分散辨识方法；利用多项式对非线性函数的无限逼近的性质和优化过程中设定点的阶跃信号作输入激励信号，获得了动态非线性大工业过程的可分稳态模型和可辨识的条件。

The achievement that soil ultimate bear capacity heightened under pile caps due to barrier effect of piles gained from model test, and soil move around piles acquired from numerical simulation, its not only verified hypothesis of composite pile foundation nonlinear design theory, but have important reference value to the study of design theory and design method of composite pile foundation, which help to go deep into study of promote pile-soil-pile caps nonlinear interaction theory and composite pile foundation nonlinear design theory.

由模型试验得到的桩的遮拦作用对承台下土体极限承载力提高和数值模拟得到的土体绕桩流动等成果，不仅验证了

In the algorithm, the conditional linear state equation is first inserted into the measurement equation, which fuses the linear state process noise and the original measurement noise, whereafter the GHF is used to estimate the nonlinear states. Then the estimated means of the nonlinear states are inserted into the linear state equation and the original measurement equation to estimate the linear states by the KF. Moreover, in order to improve the accuracy of the estimates, the estimated variances of the nonlinear states are fed back to modify the estimations of the linear states using the KF.

算法将模型中的条件线性状态方程代入观测方程，并融合线性状态的过程噪声和观测噪声，由GHF获得非线性状态的估计；再将非线性状态的估计均值代入线性状态方程与观测方程，由KF获得线性状态的估计；获得的非线性状态估计方差还用于修正由KF估计的线性状态，以提高精度。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。