动摩擦

We have developed DHJSD-1 sized yarn abrasion tester, the continuous tensile abrader and DHJSP-1 Clinging tendency Tester.

DHJSD一型浆纱耐磨仪的可调参数包括摩擦销钉往复移动的动程、摩擦销钉往复移动的频率以及张力重锤的重量。

In the latter testing, intensity parameters such as dynamic cohesion and dynamic inner friction angle are gained.

在动强度试验中，取得了黄土地基的动粘聚力和动内摩擦角等强度参数。

In this paper,a numerical solution for radial journal bearings with liquid hydro-dynamic lubrication is analysed, numerical expressions for oil fiton pressure, bearing capacity , friction moment,and leakage at the bearing ends are derived,bearing capacity,flow rate, friction moment,and eccentric angle of the load under 14 different temperatures and 14 different load eccentricities are calculated.

采用数值法分析解算液体动压向心滑动轴承，推导了油膜压力、承载力、摩擦力矩和端泄流量等的数值表达形式，计算了14个不同温度点及14种不同偏心率下的承载力、流量、摩擦力矩、载荷偏位角，并通过AUTOCAD绘制了它们之间的影响曲线。认为偏心率及油温对承载力影响很大，设计时应加以限制。

Generally, its operating condition is under the low-speed and thin oil lubrication, so the viscous friction was usually neglected and the friction torque caused by main influencing factors of elastic hysteresis in rolling, spin of rolling element and sliding friction on contact zone were considered.

低速灵敏球轴承小而稳定的启动力矩和动态力矩对于导航系统的姿态控制至关重要，其工况通常是低速稀油润滑，黏性摩擦被忽略而重点推导接触区因弹性滞后、自旋及差动滑动引起的摩擦力矩。

This paper introduces the specialties of giant telescope mount control system,analyses the non-linear disturbance which reduces the performance of control system,compares two robust control theory and points out that H-infinity control theory is more suitable for telescope mount control system.

基于H∞控制理论，将非线性摩擦转矩处理为标称系统的输出端乘法摄动，把克服非线性摩擦转矩的影响转化为提高系统对模型摄动的鲁棒性；同时也考虑了系统对风扰力矩的抑制能力。

Taking the multi-rope friction hoisting as researching object,the theoretical analysis is given out for the dynamic antislip safe coefficient .

以多绳摩擦提升机为研究对象，对其动防滑安全系数进行理论分析，指出影响的因素，并结合实例应用MATLAB语言进行计算机仿真，作定量说明，从而提出增大多绳摩擦提升防滑安全系数的合理措施，对矿井安全生产具有指导性作用。

The aerostatic bearing levitates the actuating rod with four radial air inlets on each side. The frictionless aerostatic guide can improve the actuating rod is electromagnetically driven by a fixed solenoid and a actuating solenoid. Through adjusting the axial position of the actuating solenoid, the actuating stroke can be fine regulated.

双列径向供气之气静压轴承提供致动轴作径向的支撑，其低摩擦之特性有助於提升定位精度，致动轴两端外侧设有固定线圈与致动线圈，调整致动线圈轴向位置可以改变致动器最大行动范围。

At the initial observation of leakage, judge on the leaking part of the foundation, and then manually set car observation, if the leakage were no significant changes in static and dynamic sealing ring has questions; such as disk when leakage can be concluded that there is significant change are moving , static friction ring problem exist; such as leakage of medium along the jet axis, the actin ring seal problem exist mostly, leakage to the surrounding medium or from the water spray cooling holes in the leakage, the many for the static seal ring failure.

在初步观察泄漏量、判断泄漏部位的基础上，再手动盘车观察，若泄漏量无明显变化则静、动环密封圈有问题；如盘车时泄漏量有明显变化则可断定是动、静环摩擦副存在问题；如泄漏介质沿轴向喷射，则动环密封圈存在问题居多，泄漏介质向四周喷射或从水冷却孔中漏出，则多为静环密封圈失效。

Leakage in the initial observation to determine the basis of the leakage site, and then manually set car observation, if the leakage were no significant changes in static and dynamic sealing ring problem; such as the disk when there are significant changes in leakage can be concluded that the dynamic , static friction ring problems; such as leakage of medium along the jet axis, while moving most of Central ring problems, leakage to the surrounding medium or from the water spray cooling holes in the leakage, the seal ring for static failure.

在初步观察泄漏量、判断泄漏部位的基础上，再手动盘车观察，若泄漏量无明显变化则静、动环密封圈有问题；如盘车时泄漏量有明显变化则可断定是动、静环摩擦副存在问题；如泄漏介质沿轴向喷射，则动环密封圈存在问题居多，泄漏介质向四周喷射或从水冷却孔中漏出，则多为静环密封圈失效。

Leakage in the initial observation to determine the basis of the leakage site, and then manually set car observation, if the leakage were no significant changes in static and dynamic sealing ring problem; such as the disk when there are significant changes in leakage can be concluded that the dynamic , static friction ring problems; such as leakage of medium along the jet axis, while moving most of Central ring problems, leakage to the surrounding medium or from the water spray cooling holes in the leakage, the seal ring for static failure.

在初步察看泄漏量、断定泄露部位的基本上，再手动盘车视察，若泄漏量无显明变更则静、动环密封圈有问题；如盘车时泄漏量有显著变更则可判断是动、静环摩擦副存在问题；如泄漏介质沿轴向喷射，则动环密封圈存在问题居多，泄漏介质向四周喷射或从水冷却孔中漏出，则多为静环密封圈失效。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。