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- Then, Local Wave method is introduced in consideration of the non-stationarity characteristic of the vibrating signals from NC machines. 针对数控机床机械系统的非线性和振动信号的非平稳特性,引入局域波分析方法。
- In the online detection and fault diagnosis for mechanical equipment, vibrating signal analysis is an important means. 在机械设备的在线检测和故障诊断中,振动信号分析是十分重要的手段。
- In the area with loose surface, the coupling problem between the vibroseis and the surface is the main factor for vibrating signal distortion. 摘要在疏松地表地区，可控震源及其与地表的耦合问题是引起振动信号畸变的主要因素。
- Finally,combining the characteristics of the vibrating signal of fan,research is carried out on the application of holo-spectrum in vibrating trouble diagnosis of fan. 最后结合风机振动信号的特点，对全息谱在风机振动故障诊断中的应用进行了研究。
- The eigenvector of the vibrating signal is rebuild by technology of wavelet package,It is valuable and effective to detect the ride quality of locomotive bogie. 提出利用小波包技术构造机车振动信息的特征向量,对检测机车的走行品质有一定的应用价值和现实意义。
- For the vibrating signal of the hydraulic turbine in unsteady-stage conditions, this method can decompose it in a limited time and frequency range, and keep the information completely. 该方法能够有效将水轮机非稳态工况下的振动信号很好地分解在有限的时间-尺度范围内而保持信号的信息完整；
- The power spectrum analysis technique and cepstrum analysis technique have been adopted separately to analysis the vibrating signal of the three typical faults of rolling bearing based on experiments. 本文结合实验对滚动轴承三种典型故障(内圈裂纹、外圈裂纹、滚动体裂纹)的振动信号进行了研究分析,分别应用了功率谱分析和倒频谱分析技术。
- The rotor-stator contact problem can be detected by monitoring the torsional vibration signals. 提出了从转子扭转振动的变化来诊断转静碰摩故障的方法，并探讨了此方法的可行性和有效性。
- Spectrum peaks were found in the lower frequency area of the vibration signals obtained from the compressor set. 摘要分析某压缩机组振动信号的频谱发现低频处具有较高的谱峰。
- Vibration signals collected from an automobile gearbox with an incipient tooth crack areused in the investigation. 研究中用到了从带初始齿裂纹的汽车变速箱中采集的震动信号。
- The experimental research results show that the method under discussion can effectively diagnose the vibration signals of a centrifugal pump. 实验研究结果表明,该方法可以有效地对离心泵振动信号进行诊断。
- Considering rotation machines like a motor, the vibration signals are of universal nonstationarity and the fault samples are usually very limited. 旋转机械如电机振动信号普遍存在非平稳性，同时对于某台设备已有的故障样本往往非常有限的。
- In complicated frequency components domain, wavelet scalogram and assigned wavelet scalogram were used to further analyze vibration signals. 在频率成分较复杂的地方，利用小波尺度图和再分配小波尺度图进行细化分析。
- This paper introduces a full period sampling method based on the resampling technology used in the sampling of rotor system vibration signals. 介绍了一种应用重采样技术的旋转机械振动信号的整周期采样方法。
- As a new method, VQ is introduced to vibration detecting method of slag on the basis of the ananysis of large amount of vibration signals. 在分析大量浇铸机构振动信号的基础上,创造性地把矢量量化技术引入钢水浇铸的下渣识别中。
- I also make the turbogenerator rubbing type of fault mechanism and the characteristics of vibration signals a certain understanding. 同时也使我对汽轮发电机组碰摩类故障的机理及其振动信号的特征有了一定的了解。
- Extensive experiments on rotor laboratorial platform show that the implementation meets the requirement of vibration signals analysis. 在转子实验台上的实验证明,该方法能够完全满足振动信号分析的要求,是非常有效和切实可行的。
- The power spectral density of gearbox vibration signals is estimated by the periodogram from which original feature sets are derived. 为了使诊断结果更好地可视化,利用遗传编程结果的固有随机性,提取两个新特征指标。
- The result of the application indicates that the characteristics of gear fault vibration signals can be extracted by EMD method efficiently. 研究结果表明,EMD方法可以有效地提取齿轮故障振动信号的特征。
- The AE signals from rolling bearing were processed by high-pass filter and demodulation and compared with vibration signals. 把声发射信号与振动信号作对比，通过高通滤波后再进行包络解调，结果表明声发射信号可以较早地诊断出故障，抗干扰性好。
