摩擦

This paper studies the control problem of nonholonomic dynamic systems with unknown inertia parameters, dynamic and static friction terms and other disturbances.

本文讨论了一类带有未知惯性参数、动静态摩擦及外界干扰的非完整动力学系统的控制问题。

For the problem of parameter variation and nonlinear dynamic friction compensation, a recurrent-neural-network-based adaptive- backstepping control for servo system was proposed.

针对伺服系统的系统参数摄动和非线性动态摩擦补偿问题，提出基于递归神经网络的自适应反步控制系统设计方法。

Comparatively, the dynamic friction models can describe the friction more completely, with their complicated forms, which makes it difficult to identify related parameters.

再次， 简要概述了摩擦建模对机械系统动力学行为的影响，以及在高精度定位系统的控制中的作用。

Finally, a nonlinear dynamic model of vibration friction system with compaction equipment was proposed. Its resonance and non-resonance responses were obtained.

建立了基于振动压路机的振动摩擦系统非线性动力学模型，利用渐进法得到了振动压实过程的共振响应和非共振响应。

With this model, the effects of vertical dynamic resistance on the performance of sliding bearing are deeply explored.

在此基础上，应用这种滑动支座模型，对橡胶支座直接放置于墩顶，与墩顶和梁底的接触面没有螺栓连接，水平力的传递靠接触面的摩擦作用，这种比较常见的桥梁结构形式，做了结构分析，指出其动力性能特点。

Stochastic variables included driven accelerations, driven time, torques, frictions and damps were considered basically. In the first, Monte Carlo method was applied to generate stochastic variables and dynamical responds of mechanism. Secondly, the application of Artificial Neural Network was motivated by the approximate concepts inherent in reliability analysis and time consuming repeated analyses required for MC.

将驱动加速度、驱动时间、摩擦和阻尼力等作为随机变量，应用蒙特卡罗方法，取得动态参数样本，再利用人工神经网络方法，根据抽取的样本对网络进行训练，统计网络输出得到动态应力分布，进而求出机构动态强度可靠度。

Earth because six plate in the" super major major brake ", 6 geocentric to a plate at the same time moving forward a little bit, all major plate with the gap between very closely, and will not create friction.

因为地球上6大板块在"超级重大重大刹车"下，6个板块同时向地心前进了一点点，各大板块之间的间隙结合非常紧密，同时不产生摩擦。

In the quiet of that place even the voice of the surf is reduced to a whispered echo and the sounds of the forest are but the ghosts of sound--the faint sighing of evergreen needles in the moving air; the creaks and heavier groans of half-fallen trees resting against their neighbors and rubbing bark against bark; the light rattling fall of a dead branch broken under the feet of a squirrel and sent bounding and ricocheting earthward.

置身于此地的宁静之中，连拍岸的海浪声也减弱为喃喃的回响，而森林之声也宛如声之幽灵——四季常青的松针在风中微微叹息；半倒的树靠在邻树上，树皮互相摩擦发出阵阵咯咯声和更重的呻吟声；被松鼠踩断的枯枝掉地后反复弹动，发出轻微的嘎嘎声。

We should learn to espect for ech other to avoid friction or conflict.

我们应该学会尊重对方，避免摩擦或冲突

The results show that the technique works well in growing compact and smooth DLC films with high resistivity,high hardness and elastic modulus,low friction coefficient and good optical characteristics.

类金刚石碳膜以其优异的性能，诸如高电阻率[1]、高硬度、低摩擦系数、良好的光学特性等，显示出良好的应用前景，越来越受到人们的关注[2-3]。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。