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- Analysing and Handling of Reasons for Power Frequency Vibration about Large Turbo-generator in Power Plant 某电厂大型汽轮机组振动原因分析及处理
- Analysing and Handling with Reasons for Power Frequency Vibration about Large Turbo-generator Set 某大型汽轮机组工频振动原因的分析与处理
- power frequency vibration 工频振动
- Impact in power frequency variation. 频率变化之影响。
- High frequency vibration generation transient heating. 高频振动产生瞬间加热。
- From now on,we will attempting to adopt more than one method,such as ferrograph analysis and low frequency vibration analysis,and the like. 今后设想用多种方法进行综合监测，在原有基础上再结合铁谱和振动等监测方法.
- In order to improve the passive type features of resonance and low frequency vibration, the active control scheme is applied. 为了改善被动式气压隔振支座的共振与低频之振动特性，研究中更加入了主动控制。
- The disconnector shall operator at the power frequency short circuit while MOA's failure under the abnormal conditions. 避雷器带脱离的目的是当避雷器在异常情况下发生故障损坏时，工频短路电流使脱离器工作，脱离器接地端自动脱开，使故障的避雷器与系统脱离，并表明故障避雷器更换。
- With suitable controller design, the isolator has the functions which reduce the resonance amplitude and isolate low frequency vibration well. 利用适当的控制器设计，使其具有降低共振幅度且隔离低频振动的功能。
- A review on the study on power frequency electromagnetic field hazards to organisms. 工频电磁场生理危害的研究进展。
- The New Techniques Development of High Voltage High Power Frequency Converter of ABB Co. ABB高压大功率变频器的最新技术发展
- According to the experimental results of absolute test and on-line test,the ultra low frequency vibration table is substituted with the SCM for FBA dynamic test. 通过对比力平衡加速度计的绝对测试和在线测试实验结果,证明自标定机构可以代替超低频标准振动台来进行力平衡加速度计的动态测试。
- When the frequency changer has malfunction, power frequency is adopted, and the motor speed is nonadjustable. 万一变频器出现故障时，可工频驱动，转速不可调。
- Cropping mechanism is a key component for variant frequency vibration cropping,and its excited frequency directly affects manufacturing quality and production efficiency. 变频振动下料机构是变频振动系统的重要执行部件,其激振频率直接影响制造质量和生产效率。
- It is pointed out that the power frequency electromagnetic field is inductive field,but not radiation field. 对输变电工程工频电磁场、无线电干扰进行了理论分析,指出输变电工程工频电磁场是感应场,而非辐射场。
- In order to restrain low frequency vibration of flexible manipulator, hysteretic damping of assembled flexible link is used to restrain the vibration of flexible manipulator. 摘要为抑制柔性机械臂的低频固有振动，该文提出利用组合结构滞迟阻尼效应来提高柔性机械臂的抑振性能。
- The average EEG(AEEG) increased while the average mean power frequency (MPF) and comprexity of EEG decreased in muscle fatigue. 肌肉疲劳过程中平均脑电值(AEEG)均值增加,平均功率频率值(MPF)和脑电信号复杂度[C(n)]均值下降,该现象广泛分布于整个大脑皮层;
- Review neutral line potential shift protecto,rdepict mostly index of power frequency overvoltage 、 undervoltage and electric surge protection. 通过对中性线电位偏移保护器的回顾,简述了中性线电位保护器的设计思想和工频过、欠电压保护的主要指标。
- The principle of arc-suppression coil with three phases and five columns,and theory of power frequency extinguishing arcing were introduced. 介绍了三相五柱式消弧线圈的工作原理,单相电弧接地过电压的工频熄弧理论。
- For three-phase AC power supply systems and locomotive converter complex and electric locomotives gradually tend to adopt a one-way AC power frequency. 因三相交流供电系统和机车变流装置复杂，电力机车逐渐趋向采用工频单向交流电。
