任意小

It is shown that the closed-loop system is globally uniformly ultimately bounded with respect to a compact set around the origin. This set can be made arbitrarily small by increasing the gradient of the saturation function.

其结果表明，闭环系统关于原点的一个紧集是整体一致最终有界的，并且该紧集可以由增加饱和函数的斜率而做得任意小。

Be set arbitrarily small by increasing feedback gains.

大反馈系数可使球半径任意小。

By using the sliding mode approach and a multi-step control strategy, a new controller is presented, which can not only satisfy the control constraints but also stabilize the system to an arbitrarily small ε-neighborhood about its equilibrium in a finite time.

利用滑动模态的思想和多步控制策略，设计了不连续反馈镇定律，该镇定律一方面满足控制受限条件，另一方面使得闭环系统的状态收敛到预先给定的原点的任意小的ε邻域中。

Qu. The regulated state is guaranteed to enter and remain in a given arbitrarily small neighborhood of origin within a finite time interval. proposing two new tracking control strategies for robot.

Qu等价匹配条件的非线性鲁棒控制方案，它能够保证状态在有限时间内收缩到原点的预先指定的任意小邻域。

We have proposed the switching adaptive control law for the systems and designed the Lyapunov function in this thesis. It is proved that the proposed switching adaptive control law guarantees the solutions of the nonlinear systems boundedness and convergence of the tracking error to a residual set based on the Lyapunovs stability theory. The residual set can be made arbitrarily small by choosing a certain design parameters.

文中设计出了这类系统的切换自适应控制律，并构造出相应的Lyapunov函数，基于Lyapunov稳定性理论证明了系统在所设计的控制律作用下，闭环信号都有界并且跟踪误差收敛到一个集合，通过选择适当的参数可使这个集合任意小。

It is shown that under the supervision of the monitoring functions, the switching of control signal will stop after a finite number of switching and the tracking error will converge to a residual set that can be made arbitrarily small by choosing some design parameters sufficiently small.

进而证明，当被控对象相对阶大于1、高频增益符号未知时，在监控函数的监测下，相关控制信号经至多有限次切换后将停止切换，跟踪误差将收敛到一个残集内，且该残集可通过减小某些设计参数而变得任意小。

This is true for an arbitrarily small electron-phonon coupling within the mean-field adiabatic approximation, which treats the phonon degree of freedom classically.

在电子半满情况下，晶格形成二聚化，基态具有二聚化长程序；在平均场近似下，声子自由度是经典的，对于任意小的电声耦合，都有Peierls相变，基态是二聚化的绝缘相。

Two distant points can be connected by a curve divided into steps as small as we wish.

两个相距遥远的点可以用一根曲线分成的任意小的距离把它们连接起来。

It was proved that the repetitive tracking error sequence was asymptotic tothe interval for arbitrary prescribed δ＞ 0 when iterations go to infinity.

证明当迭代次数i→δ时，重复跟踪误差可一致收敛到任意小界δ。

Sign pattern A is minimally spectrally arbitrary if it is spectrally arbitrary but is not spectrally arbitrary if any nonzero entry of A is replaced by zero.

如果一个谱任意符号模式的任意非零元被零取代后所得到的符号模式不是谱任意，那么这个谱任意符号模式称为极小谱任意符号模式。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐