This paper presents the and trend of drill string vibration analysis technique abroad and at home.

The initial fourth order natural frequency are obtained through natural vibration analysis.

通过固有振动特性分析,得到振动系统的前四阶固有频率.

The piston rod vibration frequency has little effect on the cavity pressure oscillation amplitude.

活塞杆的振动频率对模腔压力的波动幅值影响较小.

And can adjust vibration frequency, vertical, horizontal angle and wind volume.

振动频率, 纵向 、 横向倾角及风量均可调节.

PCI-speed milling systems mill vibration frequency how to get ah!

高炉喷煤制粉系统中速磨震动频繁怎么搞定啊!

Remember, the Signal Generator frequency is one-half the wire's vibration frequency.

记住, 信号发生器的频率为金属丝振动频率的一半.

Finally, the prototype software of computer-aided conceptual design for the vibration isolation system is developed.

最后, 开发了一套隔振系统概念设计的软件原型系统.

This factory production's rubber vibration isolation pad great variety, the specification are complete.

该厂生产的橡胶隔振垫种类繁多 、 规格齐全.

The mechanism of vibration isolation is investigated with the frequency response of the system.

通过与原设计的对比,分析了优化后系统的隔振机理.

The vibration isolation effect is greatly affected by the parameters of layered foundation.

同时,地基分层参数对空沟隔振体系的隔振效果影响显著.

In addition, micro-vibration isolation, semi-active and active control of vehicle are introduced in this paper.

阐述了主动隔振理论以及主动隔振技术的发展现状, 对微幅隔振和车辆半主动隔振 、 主动隔振亦作了介绍.

The raft structure a significant effect on the vibration isolation in Double-decked floating raft isolation system.

双层 浮筏隔振系统中,筏体结构对隔振效果的影响重大.

A hybrid vibration isolation system of micro-manufacturing platform is developed.

采用混合隔振技术建立了微制造平台隔振系统.

The vibration isolation technology for a wobble plate engine is researched.

研究了斜盘发动机的隔振技术.

Experiments show that it has a good vibration isolation effect.

试验结果表明此种隔振器具有较好的隔振效果.

Suitable noise and vibration isolation, and protection against freezing must be provided.

必须提供适当的消声和隔振以及防冻措施.

Optimal control is usually in the fields of active vibration control.

振动主动控制通常采用最优控制.

The technology of active vibration control is one of the presently studying hotspots.

主动控制技术是目前研究的热点之一.

The study indicates that this simplified fuzzy controller is effective in vibration control.

研究表明,该简化的模糊控制器设计简便、易于操作、振动控制效果显著.

Adjacent structures are linked to compose the combined multi-units structure wall as its vibration control system.

将有条件的相邻结构组合在一起,组成多单体组合结构体系,推导了其振动控制方程.

In this paper, the electro-hydraulic variable stiffness system ( EHVSS ) is proposed as a structural vibration control system.

本文提出了用于结构振动控制的电液式 可变 刚度装置.