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复频率
相关语句
  complex frequency
     Complex Frequency Wave Analysis for Electric Network
     电网络的复频率波分析法
短句来源
     Harmonic Oscillator with Complex Frequency
     复频率谐振子
短句来源
     The Steepness of Pulse Edge Is Analysed by Means of Concept of Complex Frequency Wave
     用复频率波的概念分析脉沿的陡度
短句来源
     Using RC sine oscillator as an example,this paper shows that the general form of self excitation response in unsteady network is complex frequency wave exp{(σ 1+jω 1)}t.
     本文以RC桥式振荡器为例,说明不稳定网络自激响应的一般形式为复频率波exp{σi+jωi)t}。
短句来源
     Quantum Fluctuations of the Complex Frequency Second Order Circuit
     复频率二阶电路的量子涨落
短句来源
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  “复频率”译为未确定词的双语例句
     1. A state equation of free vibration is established from the measured complex frequencies and modes.
     主要内容有: 1.用复频率、复振型建立自由振动状态方程。
短句来源
     An eigenvalue problem is established based on the relationship between columns in the frequency response function (FRF) matrix of the structure.
     利用结构频响函数矩阵各列间的关系建立起一个特征值问题,从其特征向量中可求结构模态复频率和复模态向量.
短句来源
     We specially prove that the reradiation efficiency and the resonance width are nearly proportional to th imaginary part of the corresponding pole for most solid objects immersed in water.
     我们特别证明,对于大多数水中实弹性体,再辐射效率和共振宽度近似地正比于相应极点的虚部,这说明共振散射特性可以整个地由复频率极点确定。
短句来源
     and the quantum fluctuations of coordinate, momentum and energy are calculated.
     计算了复频率谐振子偶奇相干态下坐标、动量和能量的量子涨落;
短句来源
     So that the physical parameters of the system can be identified from the com- plex frequency data which are easily obtained with one measuring sensor.
     它意味着可以从测得的复频率信息中淬取出系统的结构(物理)参数。 而系统的复频率的获得只需在结构上布置一个测点。
短句来源
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  相似匹配句对
     Harmonic Oscillator with Complex Frequency
     频率谐振子
短句来源
     BOUNDING THEOREMS OF COMPLEX EIGENFREQUENCIES
     固有频率的界限定理
短句来源
     X—Band Microstrip Low Noise Frequency MuItiplier
     频率指示器
短句来源
     FREQUENCY
     生死频率
短句来源
     Complex Numbers
    
短句来源
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  complex frequency
The method is based on measuring the complex frequency response of the propagation path for a narrow frequency band within which the frequency response is governed by the desired parameters of the medium.
      
Behavior of solutions to the pion dispersion equation in the complex frequency plane
      
The appearance of each solution on the physical sheet of the complex frequency plane and its disappearance are also studied.
      
Numerical calculations were carried out in the frequency range accessible for the perturbation theory using expressions for the real and imaginary parts of the complex frequency shift of Rayleigh waves caused by a slight surface roughness.
      
Complex frequency spectra are obtained, and the mechanisms for wave damping by plasma inhomogeneity are discussed.
      
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Presented in this paper is a technique by which the measured com-plex frequencies and modes are used to idetify parameters of a nonproportional damping linear vibration system, the main contents are as follows.1. A state equation of free vibration is established from the measured complex frequencies and modes.2. From the established state equation of free vibration the normal frequencies and modes are determined.3. A state equation for forced vibration system is established by introducing experimental compliance...

Presented in this paper is a technique by which the measured com-plex frequencies and modes are used to idetify parameters of a nonproportional damping linear vibration system, the main contents are as follows.1. A state equation of free vibration is established from the measured complex frequencies and modes.2. From the established state equation of free vibration the normal frequencies and modes are determined.3. A state equation for forced vibration system is established by introducing experimental compliance matrix,and then M,K,C are determined.4. Two computer simulated experiments are conducted to prove the concepts discussed, the simulated results agree well with the theoretical results.

本文提供了用复频率、复振型识别非比例阻尼线性振动系统参数的方法。主要内容有: 1.用复频率、复振型建立自由振动状态方程。 2.用已建立的自由振动状态方程确定系统的固有频率、固有振型。 3.引入用实验得到的柔度矩阵,建立强迫振动状态方程及确定系统的M,K、C。 4.为了验证所提出方法的可靠性,进行了两个计算机模拟实验,结果与正确解符合甚好。

In this paper, the identification of the complex modal parametersof a viscous damping linear vibration system in the time domain is presented. The recurrence methods of the least square and increasing the order of model are proposed. We called it the double-recurrence method of the least square. Firstly, the complex frequencies are identified and then the complex modes. In order to give exits for noise, the order of fitting mathematical model greater than that of vibration system is adopted.. For the purpose...

In this paper, the identification of the complex modal parametersof a viscous damping linear vibration system in the time domain is presented. The recurrence methods of the least square and increasing the order of model are proposed. We called it the double-recurrence method of the least square. Firstly, the complex frequencies are identified and then the complex modes. In order to give exits for noise, the order of fitting mathematical model greater than that of vibration system is adopted.. For the purpose of extractly structural complex modes and separeating them from noise modes, the modal confidence factors (MCF) and mode shape correlation coeffcient(MSCC) are used. Computer simulated experiments have been made for proving the correctness of this method and some results are given in this paper.

本文在时域中探讨了粘性阻尼线性振动系统的复模态参数识别问题。利用振动系统的自由响应采样数据,提出了最小二乘递推与扩阶递推的双递推方法,先识别振动系统的复频率,再识别复振型。为给数据中的噪声提供一定的出口,采用拟合模型的阶数大于振动系统的阶数的数学模型。最后用模态置信因子和模态相关系数来鉴别振动系统的复模态与噪声模态。为验证此方法的正确性,进行了计算机模拟试验,文中附有算例及结果。

The properties of linear networks can usually be characterized better by symbolic network functions than by numerical analysis results. This paper describes a network function as a rational fraction with the aid of the determinant and a relevant cofactor of the network nodal admittance matrix. The parameter extraction method is used to express the numerator and denominator of the fraction, respectively, as the sum of a number of items,each of which is a product of a symbolic parameter or a combination of some...

The properties of linear networks can usually be characterized better by symbolic network functions than by numerical analysis results. This paper describes a network function as a rational fraction with the aid of the determinant and a relevant cofactor of the network nodal admittance matrix. The parameter extraction method is used to express the numerator and denominator of the fraction, respectively, as the sum of a number of items,each of which is a product of a symbolic parameter or a combination of some symbolic parameters and a polynomial with respect to the complex frequency S. The interpolation approach is used to calculate the real coe-ficients of the polynomials. Some improvements have been made to the parameter extraction method, which makes the whole algorithm simpler and more effective.

符号网络函数,与网络的数值分析结果相比,往往可以更好地描述线性网络的性能。本文借助于网络的节点导纳矩阵的行列式及有关的代数余子式将网络函数表示成有理分式,采用参数抽取法将分式的分子和分母分别表示为若干项之和,这些项分别为各个网络符号元件或它们的可能的组合与一个关于复频率S的多项式的乘积。多项式的各阶实系数采用插值法进行计算。笔者对参数抽取法的策略作了改进,使整个算法简单而有效。

 
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