Its natural frequency falls into two parts when the loads exerted on generator rotor are asymmetrical. Dual resonance phenomenon appears based on the former single frequency vibration.
当发电机的外接负载不对称时，转子的固有频率一分为二，转子的振动在原来单频振动的基础上，产生了双重共振现象。
The measurement accuracy and work efficiency are greatly improved by turbine blade natural frequency measurement system based on industrial PC.
基于PC机的汽轮机叶片静态频率测量系统可大大提高测量的精确度和工作效率。
Based on Lagrange dynamics model of vibration machinery system is established. Natural frequency, vibration model and systemic response are worked out.
基于拉格朗日法建立振动筛系统动力学模型，分析出了该系统的固有频率、主振型及系统的响应。
In this paper, a natural frequency-measuring device for turbine blade is developed, and its constructing and working principles based on spectrum analysis are presented.
简要介绍了基于频谱分析的汽轮机叶片自振频率测量系统的组成和工作原理。
The article introduced methods of drilling shaker dynamic measurement based on IVC, taking damping coefficient, natural frequency and vibration model as examples.
并以振动筛阻尼系数、固有频率和振型为例，介绍了基于智能控件化虚拟仪器技术的钻井振动筛动态特性检测方法。
The figures of the characteristic curves of the natural frequency are plotted based on the characteristic relationships of the natural frequency.
根据非线性固有频率的特征关系式画出了非线性固有频率的特征曲线。
Analysis based on the failure characteristics indicates that the nylon gum on bottom of dovetail and the long term operation can significantly reduce the natural frequency of blade.
故障分析表明：经长期使用的叶片在修理厂大修时，为满足叶片摆动量要求在榫头底面涂尼龙胶，会使叶片自振频率有较大幅度下降；
Then, the natural vibration of the FBG based two-dot coating was described, and the effects of the length and prestress of the coated fiber on natural vibration frequency were discussed.
其次，从理论上分析了两点封装方案中FBG的自振特性，讨论了封装光纤的长度和预应力对光纤自振频率的影响。
Miniature silicon resonant pressure sensor based on MEMS, which has the highest precision for frequency output, measures pressure by detecting the natural frequency of some object.
基于MEMS技术的硅微谐振式压力传感器是目前精度最高的硅微压力传感器，它通过检测物体的固有频率间接测量压力，为准数字信号输出。
Miniature silicon resonant pressure sensor based on MEMS, which has the highest precision for frequency output, measures pressure by detecting the natural frequency of some object.
基于MEMS技术的硅微谐振式压力传感器是目前精度最高的硅微压力传感器，它通过检测物体的固有频率间接测量压力，为准数字信号输出。
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