1)non-stationary random vibration非平稳随机振动
1.An efficient and accurate non-stationary random vibration algorithm for the com posite laminated structures attached with viscoelastic damping layer is proposed .提出了对敷设黏弹性阻尼层的复合材料层合结构非平稳随机振动分析的高效精确算法。
2.Predicting the time-varying auto-spectral density of a spacecraft in high-altitude orbits requires an accurate model for the non-stationary random vibration signals with densely spaced modal frequency.针对高轨航天器非平稳随机振动信号模态频率密集,传统时变信号处理方法难以准确计算时变功率谱密度,从而影响地面对航天器操作决策的特点,提出了基于经验模式分解(EMD)的时变自回归(TVAR)多分量过程神经元网络(PNN)模型。
3.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。
英文短句/例句
1.Combined PEM-PIM scheme for the non-stationary random vibration analysis of vehicle-bridge systems车桥系统非平稳随机振动的PEM-PIM算法
2.NON-STATIONARY STOCHASTIC VIBRATION ANALYSIS OF FUZZY-RANDOM TRUSS SYSTEM模糊随机桁架结构的非平稳随机振动分析
3.Stochastic Resonance in Asymmetric Bistable System Driven by two Different Kinds of Noise两种不同类型噪声驱动下的非对称双稳系统的随机共振
4.Non-Stationary Random Response of Nonparametric Probabilistic System非参数概率系统非平稳随机响应研究
5.Nonlinear Probabilistic Dynamic Response Analysis of Effective Stress of Earth Dams under Nonstationary Seismic Loadings非平稳随机地震下堤坝非线性有效应力动力响应可靠度分析
6.Analyzing Random Responses of Systems to Evolutionary Nonstationary Rondom Excitations;系统在演变非平稳随机激励下的随机响应分析
7.Wavelet Packets Transform Denoise of Non-stationary Vibration Signal and Its Application to the Fault Diagnosis of Machine非平稳振动信号的小波去噪及其应用
8.BLIND SEPARATION METHOD BASED ON SECOND-ORDER STATISTICAL FOR CONVOLUTIVE MIXTURES OF NON-STATIONARY MECHANICAL VIBRATION SIGNAL卷积混合机械非平稳振动信号的二阶盲分离方法
9.A New TFA-BD Method for Processing Non-Stationary Mechanical Vibration Signals基于时频分析的非平稳机械振动信号的盲解卷积方法
10.Nonconventional Stochastic Resonance in Monostable Duffing System under Anomalous Diffusion非正常扩散下单稳杜芬振子系统中的非传统随机共振
11.STOCHASTIC STABILITY AND RELIABILITY OF VECHICLE SEMIACTIVE SUSPENSION SYSTEM汽车半主动悬架随机振动稳定性与可靠性分析
12.Diagnosis and countermeasure of the unstability vibration in CB12MW turbine generatorCB12MW机组非稳定性振动的诊断及对策
13.DYNAMIC RESPONSE ANALYSIS OF LINEAR STOCHASTIC STRUCTURES UNDER STATIONARY RANDOM EXCITATION平稳随机激励下线性随机结构动力响应分析
14.Two Methods of Calulating the Non-Stationary Random Response for Nonlinear Systems;非线性系统非平稳随机响应的两种计算方法
15.Nonstationary Stochastic Modeling of Seepage Field in Heterogeneous Soil非均质土体中渗流场的非平稳随机模拟
16.smooth pursuit movement平稳跟随运动 平稳跟随运动
17.An improved GM-AR model for a micromechanical gyroscope's nonstationary random signals微机械陀螺非平稳随机信号改进GM-AR模型研究
18.STATIONARY AND NONSTATIONARY VIBRATIONS OF TURBINE BLADE UNDER INTERNAL RESONANCE CONDITIONS汽轮机叶片内共振系统的稳态和非稳态振动特性研究
相关短句/例句
nonstationary random vibration非平稳随机振动
1.Solution of Nonstationary Random Vibration of Linear Vehicle Systems with Variable Driving Speed by Mode Method;线性车辆系统变速行驶时非平稳随机振动的模态解法
2.Nonstationary random vibration of vehicle systems with uniform variable speed is discussed in this paper.对车辆系统变速行驶所引起的非平稳随机振动进行了研究。
3)non stationary random vibration非平稳随机振动
4)stationary/non-stationary random vibration平稳/非平稳随机振动
5)nonstationary random vibration signal非平稳随机振动信号
1.In view of the disadvantages of the traditional time-varying parameters modeling algorithm about nonstationary random vibration signal of a spacecraft with closed spaced modal frequency,a multicomponent process neural network(PNN) autoregressive model was proposed,which was based on the empirical mode decomposition(EMD).针对航天器非平稳随机振动信号模态频率密集的特点,提出了基于经验模式分解EMD(Empirical Mode Decomposition)的多分量过程神经网络PNN(Process Neural Net-work)自回归模型。
6)vehicle nonstationary random vibration车辆非平稳随机振动
延伸阅读
随机振动随机振动stochasticvibration；randomvibration无法用确定性函数而须用概率统计方法定量描述其运动规律的振动。例如，车辆在高低不平路面上行驶、高层建筑在阵风或地震作用下发生的振动就是随机振动。随机振动的单次试验结果有不确定性、不可预估性和不重复性，但相同条件下的多次试验结果却有内在的统计规律。将每次试验结果yj（t）（j＝1，2，…，n）都看作一个样本，则它们全体（又称集合）Y[t]＝y1（t），y2（t），…，yn（t）构成一个随机过程，用以表示随机振动的响应。对一个随机过程，在任意时刻ti的各样本上取值是随机的，称Y（ti）为随机变量。随机变量定义在样本空间，其取值有一定的概率，用概率统计方法可得到以下各种信息。例如，用数学期望表示随机变量的平均值；用均方值表示随机变量平方的平均值；用标准差表示随机变量偏离数学期望的程度；用概率密度函数或概率分布函数表示随机变量在不同范围取值的概率。用积分变换（如拉普拉斯变换，傅里叶变换等）方法可得到随机过程的频率域或其他域的信息，从而可全面描述随机振动的激励和响应。随机振动的问题包括：①响应预测。已知激励和系统的物理参数，求响应，例如飞机振动是否会引起零部件损坏或人体不适。②系统识别。已知激励和响应，求系统的动态特性，例如易损物品的包装设计、坦克和汽车的悬挂设计等都须弄清系统的动态特性。③环境调查。已知响应和系统的动态特性，求激励，例如公路路面检验、地震谱测试等。
