Examples of electricity-sound efficiency of piston transducer and energy dissipation per unit vibration energy D ate given.
给出了活塞式换能器的电声效率、压电元件能量耗散值D的计算结果。
The origin of the unit vibration in small guide vane opening is analyzed when the unit is closing and the optimal scheme of the unit closing law is suggested.
本文拟对关机过程中导叶小开度振动原因进行分析，并对机组关闭规律的优化方案及实施过程进行介绍。
At last, a set of online monitoring of hydropower unit vibration and analyzing system is developed, including IPC, A/D cards, vibration sensors and correlative modules.
最后研制了一套由工控机、A／D卡、振动、摆度传感器及相关模块组成的振动在线监测与分析系统。
The characteristic of resonance is that the amplitude of the rotor increases rapidly, and the vibration of the unit will be destroyed.
共振的特点是转子的振幅增大很快，机组将剧烈振动导致了机组被破坏。
Dynamic balancing machine unit axis is vibration actuating in two ways: arcuate cyclotron.
动平衡机机组轴线不正会引动两种方式的振动：弓状回旋。
Through piping model test and pump unit trial it is shown that with the two types of isolating shims the vibration acceleration of the piping system can be reduced evidently.
经管路模型试验和水泵机组试验证明，这两种隔振垫可使管路系统振动加速度级明显下降。
Finally, demonstrate the general layout of vibration signals for 300MW unit.
最后以300MW机组为例，说明其振动测点的一般布置。
By use of pocket DD vibration meter, both filed balancing of shafting of new unit and field balancing of unit with vibration troubles after operation for some time can be conducted.
用袖珍数显测振表可以对新安装机组进行轴系平衡，也可以对运行一段时间发生振动故障的机组进行现场平衡。
Based on calculation of the shafting dynamics model of unit, the value of unbalance mass of runner correspond to the value of vibration quantity in the testing site was obtained.
根据建立的机组轴系动力学模型，计算得到了测试位置处振动量所对应转轮的质量不平衡量值的大小。
The dynamic properties of bearing support system has large influence on the vibration of large turbo generator unit.
汽轮发电机组轴承座动力特性对转子-轴承系统振动有比较大的影响。
Regarding the abnormal large vibration of reheat steam pipe of unit 3 for Shandong Huangdao Power Plant, the causes were analyzed.
针对山东黄岛发电厂3号机组再热管道出现的异常大幅度振动，进行了原因分析；
The vibration exciter is a exciting vibration unit.
激振器是一种激励振动装置。
The exciter vibration is a more general problem in existing operational steam turbine generator unit.
励磁机振动是汽轮发电机组运行中较为普遍的一个问题。
This paper presents a method for calculating the modal logarithmic decay ratio of the shaft set torsional vibration in a turbogenerator unit.
本文给出了一种汽轮发电机组轴系扭转振动模态对数衰减率的计算方法。
This system adopts net expand scheme. Single unit includes vibration data collection, transmission and Real-time signal processor.
本系统采用网络扩展方案，单节点主要由振动数据采集、传输和实时信号处理单元组成。
The surface drive unit of screw pumps features in complex stress and many vibration sources, so the traditional vibration test method cannot determine the diagnosis accurately.
螺杆泵地面驱动装置受力复杂，振源众多，常规的振动测试对于故障的定位与诊断精确度不高。
The vibration malfunction was diagnosed through the analysis of unstable vibration in the operation of a unit and the field data.
通过对某机组运行中发生的不稳定振动进行分析，结合现场数据，诊断出了振动故障。
The design program on absorption of vibration was advanced for the vibrating case from the outlet in a refinery and the unit can work properly.
针对某炼油厂压缩机出口管线振动的实际情况，提出了减振设计方案，应用后使机组恢复了正常工作。
Based on the analysis of the failure cause of piston packing ring, air valve and unit pipeline vibration, the methods to solve are proposed.
本文在分析了由活塞密封环、气阀及机组管道振动引起压缩机产生故障原因的基础上，提出了相应的解决办法。
The stability test on real turbine showed that the generating unit has a wide hydraulic vibration area.
真机的部分稳定性试验表明，机组存在较宽的水力振动区；
DC servo system is the drive unit of vibration stimulation system. As the core of servo system, undoubtedly controller plays an important role to the whole system performance.
双电机同步直流伺服系统是颤振激励系统的驱动单元，控制器作为伺服系统的核心，对整个系统性能的优劣起着非常重要的作用。
By means of inspecting vibration and collecting data of 4rds reciprocating compressor unit on site, the vibrating cause were analyzed, the vibration absorbing scheme was formulated and adopted.
通过对4rds型压缩机组进行现场振动监测和数据采集，分析了振动原因，制定出减振处理方案并采取了有效的减振措施。
The LP rotor vibration of the D29 turbine unit was analyzed in this article, and point out LP cylinder was in structure resonance region around working speed, for this fault the measure was given.
对东方汽轮机厂生产的D29型机组低压转子的振动特性进行了分析，指出低压缸缸体在工作转速附近存在结构共振，并针对这个问题提出了现场的处理措施。
The vibration of generating unit, which is one of important parameters of analyzing generation unit's normal operation, is more paid attention to users.
机组振动是分析机组安全运行的重要参数之一，越来越多地受到用户的注意。
By analyzing the reasons causing deaerator vibration when unit starting, it is considered that the main cause is uneven steam heating along the whole distributing tubes.
经分析认为：沿配汽管全程蒸汽加热不均是导致火电厂除氧器投运过程中加热振动的主要原因。
It is analyzed that clearance of gland seal has damping action to vibration of the unit, and relationship of amplitude and damping coefficient of them is analyzed.
分析了汽封间隙对机组振动的阻尼作用及其阻尼系数与振幅的关系。
High-pressure feedwater pump is one of the important auxiliary equipment of power unit. Its vibration problem happened frequently has seriously influenced the safety running of power unit.
高压给水泵组是发电机组的重要辅机设备，振动引起故障的发生率高，严重影响机组的安全运行。
The paper mainly introduces the hardware implement of inspection unit for vibration, real-time data process on FIR and FFT, and data transmitting process on UDP.
着重介绍了振动检测单元的硬件实现，基于有限脉冲响应（FIR）数字滤波与快速傅里叶变换（FFT）的实时数据处理过程，以及基于用户数据报协议（UDP）的数据传输过程。
The paper mainly introduces the hardware implement of inspection unit for vibration, real-time data process on FIR and FFT, and data transmitting process on UDP.
着重介绍了振动检测单元的硬件实现，基于有限脉冲响应（FIR）数字滤波与快速傅里叶变换（FFT）的实时数据处理过程，以及基于用户数据报协议（UDP）的数据传输过程。
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