扰动

By exploiting the important properties of robot dynamics, the second strategy removes the requirement of a priori bound on parametrer uncertainty and weakens the restriction on external disturbance. The only requirement is to know an upper bound of the norm of inertia matrix, which is not necessary to be the smallest.

第二种算法利用机器人固有的结构特性，减弱了目前已有文献对未建模扰动的限制，它不要求预先知道机器人结构参数的不确定范围，仅要求已知实际惯量矩阵范数的一个上界。

In this way, the precision and the real time of calculation of the aberrance will influence the effect of the compensation. However, it is puzzle to calculate aberrance of instantaneous voltage and current on power net in real time.

这种模式下，畸变量的实时检测是一个问题，特别是对于事先未知扰动量的电网来说，无延时地检测计算出畸变量是一个难以解决的问题。

The contributions of mean flow absolute vorticity advection〓term at the low level to the negative vorticity were more than that of the transient disturbances over the most part of South China and the subtropical western Pacific in the two years.

在华南大部和副热带西太平洋，这两年低层平均流绝对涡度平流〓对负涡度的贡献大于瞬变扰动。

Moreover, it reduces the load turbulence action due to current feed-forward.

此外，电流前馈环的使用提高抗负载扰动的性能。

The strategies of high order sliding mode control and sliding mode control with integral action are proposed. Without losing the virtue of robustness and the ability of eliminating disturbance, these strategies can minimize the chattering phenomenon which is quite common in conventional sliding mode control.

在研究中，提出了高阶滑模控制和带积分的滑模控制方法，这两种方法在保证了常规滑模控制的强鲁棒性和抗扰动能力的前提下，可以在很大程度上削弱抖振，对常规的滑模控制有较大的改进。

A novel sliding-mode control is designed with a load thrust observer for the Linear Permanent Magnetism Synchronous Motors,in order to compensate the disturbance and effectively minimize the system chattering;introducing an integral action in the sliding mode to eliminate the system error and chattering.

针对永磁同步直线电机提出了一种基于负载推力观测器的新型滑模变结构控制，从而实现对推力扰动的补偿，且大大削弱了推力纹波及系统的抖振；在滑动模态中引入积分环节来进一步消除系统的稳态误差和系统抖振。

Following up the change of some parameters in AC systems, it can regulate the active power transmitted by DC link and damp power oscillation in s...

在交流系统受到扰动后它通过跟踪交流系统某些参数的变化来调节直流输送的有功功率，从而达到阻尼整个系统功率振荡的目的。

Through our studies, we concluded that the mesoscale disturbance spreading along the tangential and radial direction respectively has the characters of transverse wave and symmetric inertia-gravitational wave. Nevertheless, the mesoscale disturbance in the area of super-gradient current nearby the eye-wall of Typhoon has the features of the mixed vortex Rossby-inertia-gravitational wave.

研究认为切向和径向传播的中尺度扰动分别具有横波和对称型重力惯性波性质，但在台风眼壁附近的超梯度流区的中尺度扰动具有混合涡旋Rossby波－重力惯性波特征。

As main part of this thesis, the responses of the ionosphere on solar flare radiation are analyzed by means of GPS method, which is the first time in the world to analyze this kind of ionospheric disturbance using GPS method.

本论文在分析GPS系统以及空间环境对其影响的基础上，归纳出了一个简单有效而高精度的利用双频GPS数据进行电离层扰动研究的数据处理方法；分析了该方法的各种误差源及其修正；并利用该方法研究了发生于电离层中的多种背景和扰动形态。

Naturally, we can take as basis the eigenstates of the unperturbed Hamiltonian and expand the perturbed states in this basis.

很自然地，我们可以取未扰动哈密顿量的本征态做为基矢，来展开被扰动哈密顿量的本征态。

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。