将倒频分析引入阶次分析中，以检测出功率谱中难以辨识的周期性。
Cepstrum analysis is introduced to order analysis in efforts to identify the periodic information hidden in the power spectrum.
硬件系统已能满足各类信号的获取，尤其是阶次分析所需的振动、转速信号同步获取。
The hardware system can acquire all the signals especially the synchronous data acquisition of vibration and speed signals.
阶次分析是基于FFT的一种时频转换谱分析，它是变速旋转机械体振动分析的最重要的一种方法。
Order analysis based on FFT is a transform between time-domain signal and frequency-domain signal and furthermore, it is the most important vibration analysis of rotational machinery.
首先进行了车内噪声实验和NVH半消声室台架实验，利用阶次分析找到了主要的阶次，然后利用声贡献量分析最终确定了啸叫特征阶次。
The whine noise was tested in vehicle and in the NVH testbench. Through order tracking analysis and noise contribution analysis, the whine orders were found.
针对齿轮箱升降速过程中振动信号非平稳的特点，将常规的阶次分析与双谱分析技术相结合，提出了基于阶次双谱的齿轮箱故障诊断方法。
In order to process the non-stationary vibration signals such as speed up or speed down signals effectively, the order bispectrum technique was presented.
本文通过对阶次跟踪的分析，找到了一种实现旋翼同方位数据采集的新方法。
Through the analysis of order tracking, this paper find a new method that realize orientation data sample in rotor test.
针对一次二阶矩法可靠度指标分析中验算点的计算问题，提出一种新的修正迭代算法。
A new iterative algorithm is presented for seeking the design point in the FOSM reliability index analysis.
分析了在适当的边界条件和约束下三次多结点样条插值的逼近阶；
The approximation order of the interpolation with the appropriate boundary conditions and constraints is analyzed.
通过该方法，只需要进行阶次很低的矩阵和行列式计算即可完成平面连杆机构的振动分析。
Applying this method, we can only require the lower order's calculation of matrix and determinant to make the analysis of vibration for the plane link mechanism.
计算考虑了积分阶次和约束条件对振型的影响，并与实验数值进行了比较，验证了理论分析的正确性。
Considering the integration order and the effect of constraint condition to the model shape, comparing model shape with experimental data, the analysis about theory is right.
一次二阶矩方法是结构可靠度分析的基本方法．一次二阶矩方法的计算精度依赖于验算点附近功能函数的非线性程度。
The first-order second-moment method is fundamental in structural reliability analysis, its accuracy depends upon the nonlinear extent of performance functions around checking point.
一次二阶矩法是目前求解结构可靠性分析的主要计算方法之一，该方法要求功能函数对随机变量的偏导运算。
Reliability analysis using First Order Second Moment (FOSM) is important for structural probability design, in which process demands the derivative operation.
采用改进的一次二阶矩法对腐蚀管道的可靠性指标和失效概率进行了分析和计算。
The advanced first order and second moment iterative method are employed for calculation on reliability index and failure probability.
本文提出了海洋平台结构系统疲劳可靠性分析的一阶二次矩方法。
A first order second moment formulation for systems fatigue reliability assessment of offshore structures is presented.
用有限元传递矩阵法分析火炮身管固有振动特性，矩阵阶次低，计算所得的固有频率与实际固有频率接近，误差在允许的范围内。
Matrix step is low by using the finite element transfer matrix method. Natural frequency by calculation approaches to actual natural frequency and the error is allowable.
针对阶次一致的传动部件，通过接触斑点分析，最终确定了啸叫的噪声源。
Then through the tooth contact spot analysis the source of the gear whine was found.
根据对象的输入输出采样数据，用数值计算方法分析热工对象模型的阶次。
Based on the sampled date of the system input and output, the paper presents a method for numerically analysing the system model order.
基于阶谱块体单元法，提出了二次覆盖的概念和一种分析岩石块体受拉开裂破坏的方法。
Based on the hierarchical block element method presented earlier, a new concept of subordinate cover and a method to simulate the tension crack in rocky block are proposed.
采用改进一次二阶矩法分析单个夹杂裂纹扩展的可靠性。
The reliability of the fatigue crack growth life of single inclusion is analyzed by the advanced first order and second moment method.
用一次二阶矩法分析结构可靠度需要反复迭代求解。
For structural reliability analysis calculation. Rackwitz and Fiessler Method has to employ iteration.
借鉴结构可靠度分析方法，给出了供水管网抗震功能可靠度分析的一次二阶矩方法。
The mean-value-first-order-second-moment method and advanced first-order-second-moment method are used to analyze the aseismatic serviceability of water supply network.
在详细描述合肥盆地布格重力异常的分布特征的同时，给出了布格重力异常小波分析计算不同阶次细节的结果。
The distribution pattern of Bouguer gravity anomalies in Hefei basin has been described in detail, and the 1st order to the 4th order wavelet details were calculated.
针对齿轮箱升降速过程中振动信号非平稳的特点，将阶次跟踪、角域平均和幅值、相位解调分析技术相结合，提出了基于幅值和相位解调分析的齿轮箱故障诊断方法。
In order to process the non-stationary vibration signals such as speed up or speed down signals effectively, the order tracking technique and Angle domain average technique were presented.
在分析与探讨脉动轴向力作用下梁的参数共振问题时，本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域，确定了零解与非零解的稳定性。
This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.
在分析与探讨脉动轴向力作用下梁的参数共振问题时，本文取四种边界条件来分析第二阶次谐波参数共振的稳定区域，确定了零解与非零解的稳定性。
This paper investigates the subharmonic parametric resonance problems of a symmetric orthotropic laminated rectangular plate with simply supported edges by the use of the singularity theory.
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