扰动

Meanwhile, many new perturbed PDEs in science and technology need us to seek out approximate solutions.

同时随着科学技术的发展，出现了一些扰动的偏微分方程，需要我们去寻找它的近似解。

A decentralized control law is proposed which combines the approximation method of neural network with sliding mode control.

针对一类具有未知界扰动和子系统部分已知的非线性大系统，结合神经网络逼近方法、滑模控制研究了一种新的分散鲁棒自适应控制方法。

For the design of the sliding mode control of time-delay large-scale systems, we propose the adaptive fuzzy sliding mode control schemes, and the fuzzy approximator is used to approximate the upper bound of the uncertainties which combine time-delay interconnections with perturbations in the system.

所以，我们针对具时间延迟的大型系统的滑动模式控制设计上提出了一个适应模糊滑动模式控制方法，其中，模糊近似器被用来近似系统当中时间延迟以及扰动相互结合后的上界。

Moreover, the mean-square tracking error can be made arbitrarily small by choosing some design parameters appropriately. Even with unmodeled dynamics and bounded disturbances presented the controller has good robust performance without need of correct dynamic model and parameter estimation.

并且这种控制器的设计不需要有精确的系统动态模型，不需要未知参数来满足线性依赖条件，不需要具体的系统参数估计，即使存在未建模动态和有界扰动，系统仍然具有很好的鲁棒性。

A study on the dynamics of soil bulk density,soil organic matter,soil microbes and other soil ecological factors under different human disturbance (logging and assart,logging but without assart,control)were conducted in the Ziwuling secondary forest area.

：对黄土高原陕西子午岭次生林区不同人为扰动条件下林地土壤容重、有机质、团聚体和微生物等进行了研究。

In the thesis, disruption management of the case when the weighted shortest processing time rule is optimal and single machine with assignable due dates is presented.

我们所讨论的重新排序与单纯的将扰动发生后的问题当成一个新的排序问题来求解是不同的。

It is proved that the problem has a global solution whose limit at infinity solves the original equation.

本文讨论解算子与右端数据均有扰动的半正定算子方程的动态系统方法。

The model of the boom in atmospherics is constructed, and then its control law is designed with the H(subscript ∞) method.

建立了大气扰动中的伸缩套管模型，采用H方法设计了伸缩套管的控制律，并进行了仿真。

So it is of great significance to cancel or attenuate the effect of exogenous disturbances, both in theory and practice.

因此，在具有时滞的离散不确定系统中，如何设计控制器消除或减小扰动对系统的影响，无论在理论上还是在实践中，都是很有意义的研究课题。

Through the comparison test, system stability and reiterationtest of the model instrument in contrast to photo-electricity autocollimator, and the airagitation test, the results indicate that the performances have met the scheduledtargets.

通过系统重复性实验、与光电自准直仪的比对实验及空气扰动实验，结果表明，样机的性能、指标基本达到了预定目标。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。