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固有频率     
相关语句
  natural frequency
    The Finite Element Method for the Calculating Natural Frequency of Turbogenerator Stator End Windings
    汽轮发电机定子绕组端部振动固有频率计算的有限元方法
短句来源
    Calculation of Natural Frequency of Torsional Vibrations for an Enclosed Disc Shaft System
    封闭盘轴系统扭转振动固有频率的计算
短句来源
    Natural Frequency of the stator of Ring Ultrasonic Motor
    环形超声波电动机定子振动的固有频率
短句来源
    Measurement and Analysis of the Natural Frequency of the End Winding on Large Turbogenerator Stator
    大型汽轮发电机定子端部绕组固有频率测试与分析
短句来源
    Research on Express Test and Analysis System for Natural Frequency of Generator Stator-and Coil
    发电机定子端部线圈固有频率快速测试分析系统的研究
短句来源
更多       
  inherent frequency
    Research On The Vibration Stimulus Source and Resonance Inherent Frequency of 4135D Diesel Generator Group
    4135D柴油发电机组振动激励源与共振固有频率的研究
短句来源
    Analysis of Inherent Frequency and Modal Testing about End Winding of Generator Stator
    发电机定子绕组端部固有频率测试及模态试验分析研究
短句来源
    Mode Analysis of Inherent Frequency at Generator End
    发电机端部固有频率的模态分析
短句来源
    Using these design principles and steps,a torsional pendulum of the magnetometer was designed. The inherent frequency and the static distortion of this design module were simulated in ANSYS. It can be seen that the designing results from the proposed method are in good accordance with the simulation results,which validate the reliability of the model and the rationality of the designing method.
    通过理论推导建立了扭摆和扭梁的力学模型,得出了磁强计灵敏度与扭梁刚度的关系,通过仿真说明了系统中各结构参数之间的关系,得到了隧穿式磁强计的设计原则,运用提出的设计流程和原则,进行了磁强计实例设计,在ANSYS下对此模型进行了固有频率和静态变形仿真,仿真结果与通过设计方法得出的值吻合较好,从而验证了模型的可靠性和方法的合理性。
短句来源
    Measuring Principle and Method For Inherent Frequency of End Connection winding of stator in Large Turbo—Generator And Their Application
    大型汽轮发电机组定子端部绕组固有频率的测试方法及应用
短句来源
更多       
  nature frequency
    3.The vibration modal analysis of the wind turbine blade are presented . Theresults of the nature frequency and vibration are obtained, and we can configure thenature vibration characteristic of impeller blade and the tower structure system,keeping away from the impeller frequency when impeller run, controlling thevibration response of the tower system.
    3.对风力机叶片作了有限元模型方法的探讨和振动模态分析,得到其固有频率和振型,根据结果配置叶轮叶片和塔架系统的固有振动特性,使塔架避开叶轮运转时产生的激振力频率,控制好塔架系统的振动响应。
短句来源
    The test principle,instruments used and measured information are presented. Using the modern Fourier analyzer and its mode analyzer system,the measured value of nature frequency and damper coefficient of the stator core are accurate.
    由于采用现代富立叶分析系统及其专用模态分析设备,测定的定子铁芯模态固有频率和阻尼系数精度较高,还能用动画式图象显示立体振型的振动情况。 文中分析了测试结果以及传递函数模态分析法在电机零部件模态测试中的应用问题。
短句来源
    In order to accurately measure and recorder various measured signals, we ought tocorrectly select the nature frequency, damping of oscillators and magnitude of the measured signalsource matching with internal resistance rg of oscil1ator. We also properly adjust the posit1on of thelight dots, so that the arc errors are reduced.
    为了准确地测量记录各种被测信号,应当正确地选用振子的固有频率和阻尼.适当地选取被测信号的大小,保持信号源内阻R1与振子的内阻rg相匹配,同时要正确地调整光点位置,以减小圆弧误差。
短句来源
    With the finite element so ft ware I-DEAS,the nature frequency and the vibration mode of the runner of hyd raulic turbine was calculated.
    利用I-DEAS软件对大型混流式水轮机组转轮进行振动分析计算,求得某转轮的前十阶固有频率及振型。
短句来源
  free frequency
    Study on the Free Frequency of High-Voltage Separated-Phase Closed Bus Wire
    高压离相封闭母线固有频率的研究
短句来源
    The free frequency of the high-voltage separated-phase closed bus wire used in a super-large-sized power station is studied.
    对超大型电站发电机用某段高压离相封闭母线的固有频率进行了研究。
短句来源
    Firstly,the simple equivalent physical model is built. Then,the second type of the Lagrange formula is established on the basis of the energy method of the multi-freedom-degree system. The spatial model without damp composed of inertia matrix [ M ] and rigidity matrix [ K ] is established to obtain the multi-order free frequency in different directions of the closed bus wire.
    首先建立等效简化的物理模型 ,在多自由度系统的能量法基础上 ,建立Lagrange第二类方程 ,得到惯性矩阵 [M ]和刚度矩阵 [K]构成的无阻尼的空间模型 ,求得母线不同方位的相应多阶固有频率
短句来源
    The results show that the value of the closed bus wire free frequency obtained is suited for the design requirement.
    结果证明所求母线的固有频率符合设计要求。
短句来源

 

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  natural frequency
This study investigated the dynamic modulus of elasticity (DMOE) of wood panels of Fraxinus mandshurica, Pinus koraiensis, and Juglans mandshurica using the natural frequency measurement system of fast Fourier transform (FFT).
      
The natural frequency reached 1.201-kHz using finite element analysis, and the practice measurement result was 1-kHz.
      
Using the differentials of a stiffness matrix to design parameters, a method for calculating the sensitivity of natural frequency is presented.
      
Through the mode analysis of the liquid-solid coupled system, the first-order natural frequency, diaphragm vibration shape and amplitude-frequency relationship are obtained.
      
The natural frequency of the system was less than that of the structure on rigid foundation if the SSI is not taken into account, while its damping ratio was larger than that of the structure.
      
更多          
  inherent frequency
Code combining is used to exploit the multiple signal copies resulting from the inherent frequency diversity of spread spectrum.
      
Even though the gain due to selection in frequency selective channels is reduced compared to that in flat fading channels due to the inherent frequency diversity, the performance improvement is significant when the system is interference limited.
      
Each device operates at some inherent frequency, with wide variation among devices.
      
The windowing helps by reducing the inherent frequency broadening of each interferer caused by the finite duration of the FFT.
      
  nature frequency
The local-ether wave equation incorporating a nature frequency and the electric scalar potential is presented, from which the electrostatic force in conjunction with the inertial mass is derived.
      
It is found that, with the flow velocity increased, the nature frequency of the pipes reduced, increased, reduced again and so on.
      
Meanwhile the third-order approximate analytic expression is given for describing the nonlinear relation between nature frequency and peripheral moment, transverse loads, amplitude, base angle under the small deformation.
      
Changing from case 1 to case 2, the overall bridge system becomes softer which makes the nature frequency smaller.
      
For example, if a structure is damaged locally, its stiffness will decrease which lead to nature frequency decrease and damping increase.
      
更多          
  free frequency
The averaging is performed in the neighborhood of the critical free frequency of a nonlinear system.
      
The results, in particular, provide a key to understanding the particle acceleration process in relativistic accelerators near the critical free frequency.
      
We find that the corrections increase with the cut-off frequency and become negligible when the ratio between the Einstein coefficient of spontaneous emission and the free frequency of the two-level system is considerably small.
      
A?modulation-free frequency stabilization system has been designed which uses the differential signal from two frequency-displaced beams traversing a Rb cell and which probe the Doppler-broadened Rb S-P lineshape at microwatt power levels.
      
When optimized this way, the frequency modulation transfer signal can be used for the sensitive optical detection of rare species or isotopes, Doppler-free frequency measurements or as a sensitive error signal for laser frequency stabilization.
      
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