阻尼的

A simplified PUMA robot force control model is given in this paper. The stability and rubustness is analysised by computer simulation. The step response of position loop and force loop in external alter mode is tested, and prove that the system posses critical damping ratio.

简化得出了PUMA机器人的力控制模型，利用计算机仿真的方法，分析了系统的稳定性及鲁棒性，给出了最佳参数的选择，测试了在外部修正方式下位置控制环及力控制环的阶跃响应，证明位控环具有临界阻尼的特性，并讨论了参数选择值不同时对系统性能的影响。

For perforated plate,the thickness and the dimensions of the plate are not limited.

该方程很好地解决了分析有限尺寸孔板的边界和孔板的厚度对压膜阻尼的影响的困难。

By analyzing the result, three most main factors influencing the calculation accuracy are found: the constitution of wave scatter diagram, interpolating the irregular wave and the estimating of roll damping coefficient.

通过分析计算结果提出了影响计算精度的三个最主要的因素：海浪能量谱的构成、不规则波的合成方法、横摇阻尼的估算。

Variation of stiffness will cause the response of frame-shear structure to variate greatly;variation of mass shows less effect;and variation of damping shows insignificant effect .

刚度的变异性将引起框剪结构的响应发生大幅度变异，质量的变异性影响稍小，阻尼的变异性影响不显著。

After esterification by BTCA Acoustic properties of picea sitchensis Carr.andChamaecyparis Iawsoniana ParI were changed,(treated/untreated ratio):Loss tangentdecreased 10～2424% in the tangential ofpicea sitchensis Carr,9～17% and 10～22% in thetangential and radial directions of Chamaecyparis Iawsoniana ParI.,respectively.Specificdynamic Young's modulesand acoustic radiation coefficient of two wood changedunremarkably,in the tangential direction with increment of ASE.Specific dynamic Young'smodulesincreased 3～9% in the radial direction.tgδ/E of decreased 9～27% intangential of picea sitchensis Carr,7～14% and 10～26% in the tangential and radial directions ofChamaecyparis Iawsoniana ParI.,respectively.

BTCA酯化处理西特克云杉和美国扁柏木材的声学性能发生了变化，处理材与未处理材比值，损耗角正切tgδ：西特克云杉纵向下降10～24％，美国扁柏下降纵向9～17％，径向10～22％；比动态弹性模量E/ρ：两种树种的纵向变化均不明显，随着ASE上升变化不规则，美国扁柏径向上升3～9％；声辐射阻尼的变化类似于比动态弹性模量E/ρ的变化；tgδ/E：西特克云杉纵向下降9～27％，美国扁柏下降纵向7～14％，径向10～26％。

The frequency characteristics and SRs of OAG in a second-order linear systemwith fluctuating intrinsic frequency or randomizing damping coefficient by asymmetricdichotomous noise are investigated.

研究了非对称双值噪声作用的随机本征频率和随机阻尼的二阶线性系统的输出幅度增益的频率特性和随机共振行为。

The stationary flexible chute system for concrete-conveying is more convenient than the common chute because of its flexible,adjustable and negative-pressure damping behaviours,the end of this flexible chute is uneasily blocked up,and the aggregate of conveyed concrete is quite few separated;good application prospect of this chute system is expected.

固定式软管溜筒系统由于具有柔软可伸缩性和负压阻尼的特点，与普通的钢管溜管系统相比，具有不堵管、终端骨料分离较小的特点，是一种具有应用前景的新型混凝土运输手段。

With sensors reading the road surface at a rate of 1 inch at 60 mph (25.4 mm at 97 km/h), the system responds by commanding constant changes in damping force at all four corners.

由于传感器读数在60英里（25.4毫米的路面在1英寸的速度为97公里/小时），系统响应在阻尼的各个角落不断变化的指挥力量。

The results demonstrate that the proposed multi-harmonic method is very efficient for studying the mistuning effects on the resonant response of bladed disks with blade-to-blade dry friction damping, especially considering the combined effects of various system parameters.

结果表明，提出的多谐波分析法能够高效地研究失谐对带有叶间干摩擦阻尼的叶盘系统共振响应的影响特征，尤其适合考虑各种系统参数的综合影响。

Firstly, optimal parameters of the passive coupling element such as damping and stiffness under different circumstances are determined and the influence o...

文章首先导出了在平稳白噪声激励下被动耗能单元优化刚度和优化阻尼的一般表达式，并分析了不同结构参数对控制效果的影响；比较了在不同的平稳过滤白噪声激励下主-从结构相对位移反应的均方根值；最后给出了在EI- Centro1 940 NS地震波作用下主-从结构相对位移和绝对加速度反应的峰值。数值结果表明了这种被动优化控制方法的有效性

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。