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- periodic vibration signal 周期振动信号
- By studying the vibration signal characteristics in periodic loading machine system, vibration signal model including state equation and observed equation was constructed. 通过研究周期性负载机械系统振动信号的特点，构造了包括状态方程和观测方程的振动信号模型。
- The deconvolution between cylinder pressure signal and head bolt vibration signal was analyzed. 摘要研究了发动机气缸压力信号与表面振动响应信号之间的反卷积关系；
- The piecewise self-affine fractal model was explored for data coding and reconstruction of vibration signal. 提出了用于对振动信号进行编码及重构的分段自仿射模型。
- The lifting wavelet transform is used to construct wavelet to de-noise the vibration signal of turbo generator units. 针对电厂汽轮发电机组振动信号的噪声抑制问题,采用提升小波变换的方法构造小波。
- This model can realize the nonlinear mapping of vibration signal measured under the condition of a reciprocating pump. 使用小波包分析的特征提取功能以及神经网络的非线性映射功能能够较好地完成从振动信号到往复泵故障的分类。
- In order to effectively abate the noise of geared pump vibration signal, matching pursuit is introduced for de-noising. 摘要为了更有效地消除齿轮泵振动信号的噪声，引入匹配追踪消噪方法。
- Results Cause-specific incidence rate of leptospirosis was 15.43 per 100 000 in average, with an epidemic interval of 10 years, with statistical significance in periodic vibration (J＝4.179，P＜0.05). 结果宜昌市38年来钩体病年发病率为15.;43/10万，流行周期为10年，周期振动有统计学上显著性意义(J＝4
- In order to effectively abate the noise of geared pump vibration signal,matching pursuit is introduced for de-noising. 为了更有效地消除齿轮泵振动信号的噪声,引入匹配追踪消噪方法。
- The denoise of vibration signal in engine rotor system is proposed, which is based on signal blind separation. 本文根据信号分离理论研究了发动机转子系统振动信号的降噪问题。
- Additional to that, the vehicles" speed were calculated by the method of autocorrelation analyzing, the method of displacement-integral to eliminate the period vibration was also tried. 另外,还在利用自相关分析方法计算车辆的通过速度,利用位移积分法以消除动态周期振动载荷方面进行了一些尝试。
- 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。
- The main drive source and dissemination way of engine vibration baa been confirmed through analyzing the basic characteristics of engine vibration signal. 摘要通过对发动机振动信号基本特性的分析，确定了发动机振动的主要激励源和传播途径。
- Third, prove the original advantage of wavelet transform through the signal instance that while dealing with the vibration signal of the gear wheel. 第三，通过信号实例说明小波变换在处理齿轮振动信号时的独到优点。
- Based on the Parseval energy integral equation, energy values included in vibration signal of corresponding frequency are calculated. 依据Parseval能量积分等式 ,计算出各频率对应振动响应的能量值。
- The DLA model is improved to simulate the process of stochastic walking and adherence of nano-particles under periodic vibrations. 通过改进的DLA模型,重复出颗粒随机行走和粘附的动力学过程。
- The theory of wavelet and wavelet packet is simply presented and vibration signal of farm transporter is analyzed by programming with MATLAB. 摘要介绍了小波和小波包理论的基本思想，并用MATLAB语言编制了处理程序对农用运输车振动信号进行实例分析。
- The vibration signal from the reciprocating engine is non-stationary,time-variation,so,application of HHT is a good choice. 从往复机械上得到的振动信号往往具有非平稳、非线性特征,因此采用HHT方法分析是一种较佳的选择。
- The proposed UWT effectively extracted the friction fault features of amplitude modulation and transient impact from vibration signal of a gearbox. 采用这种非抽样小波变换从齿轮箱的振动信号中有效提取幅值调制和瞬态冲击的摩擦故障特征。
- Considering the features of the testing vibration signal of the roller bearings, the usage of cepstrum could simplify the analysis of the spectrum... 针对压榨部滚动轴承振动信号的特征,利用倒频谱技术可简化谱图的特征分析,提高压榨部滚动轴承在线故障诊断的准确性。
