Order analysis plays an important role in non-stationary vibration signal processing in rotating machinery.

旋转机械非稳定信号阶比分析技术，是旋转机械特征分析的重要内容。

In order to process the non-stationary vibration signals such as speed up or speed down signals effectively, the order bispectrum technique was presented.

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。

Through ARIMA model and standardization, the non stationary vibration series acquired in the field were transformed to stationary time series normally distributed.

将现场测得的非平稳振动序列通过ARIMA模型和标准化处理，转化成标准正态平稳时间序列。

A detailed overview of its applications to fault diagnosis, condition monitoring in run - up and shutdown stages as well as non - stationary vibration is presented.

对全息谱技术在回转机械故障诊断、起停车分析以及非稳态信息处理中的应用进行了全面的回顾和总结。

This Paper Compared the responses for a Single-of-freedom linear mechanical System to stationary Vibration, random Vibration, transport (motor Uehicle and freight train) Shock testings.

比较了单自由度线性机械系统在稳态振动、随机振动、运输试验（汽车与火车）以及冲击试验中响应的大小。

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.

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。

Vibration signals borne by different main bearing clearances are not stationary and time variant. It is difficult to early detect and diagnose by means of traditional methods.

内燃机曲轴轴承所受到的冲击信号是非平稳、时变信号，用传统的诊断方法难以进行故障的早期发现和诊断。

The ordinary methods of feature extraction usually hypothesize the vibration signals have the characters of stationary and Gaussian.

当前常用的机械故障征兆提取方法，多是假设振动信号具有平稳和高斯分布的特性。

The imaginary vibration model of transition state is studied chiefly, and points to reactant and product, and illuminates that stationary points locate the right reaction channel.

重点研究了过渡态的虚振动模式，它指向反应物和产物，说明这些驻点均位于正确的反应途径上。

A new method for a vertical non-stationary random vibration analysis of vehicle-bridge systems subjected to track irregularity excitations is proposed.

提出了考虑轨道高低不平顺时进行车桥耦合系统垂向非平稳随机振动分析的新方法。

The results may better reflect the non-stationarity of ground motion in time domain and are closer to reality than those by wave theory and stationary random vibration theory.

由于这种方法能较好地反映地面运动的时域非平稳性，所以得到的计算结果更真实。

The singal transient feature detection represent method, and a transient energy evaluation method are used based on the reassigned scalogram for the vibration non-stationary feature representation.

提出基于小波尺度图重分配的信号瞬态特征检测方法和瞬时能量估计方法，并应用于轴承在多种轻微故障状况下的振动非平稳特征的检测与表示。

Some examples are given about the vibration analysis of the vehicles and rocket motors under non-stationary excitation.

还给出了车辆、火箭发动机受非平稳激励时的振动分析。

Theauthor quantitatively analysed the formation of stationary wave and its transmission without vibration, phase, wave form and energy to apply theory to practice.

本文分析了驻波的形成及其振动、相位、波形、能量驻立的特征。使驻波实际应用中，有一个清晰的概念。

The high speed data sampling and signal analysis system is investigated for vibration monitoring and fault diagnosis of aircraft engine in the case of stationary experiments.

为了在地面实验中监测航空发动机的振动情况和进行故障诊断，研制了高速数据采集系统、信号处理系统以及基于模糊聚类方法上的故障诊断系统。

In fact, vibration wave shows that vibration signal of power sets is non-stationary and has fractal characteristics.

实际的振动波形表明，机组的振动信号具有非平稳性，其波形具有分形特征。

This article established the covariance matrix method of non-stationary random vibration.

本文提出求解非平稳随机振动问题的一种新方法——协方差矩阵法。