什么是谱加速度?。
通过测量车辆的振动加速度响应信号获取路面谱的方法具有很好的实用性。
The method of getting road response spectrum by measuring vehicle vibration acceleration response signals is practicable.
本文应用样条函数方法拟定了一个由加速度记录快速计算结构震动反应谱的方法。
This paper proposes a procedure to determine the response spectra by spline function analysis using acceleration record as input.
最后给出如何求解车辆上任一固定点非平稳随机响应的瞬时加速度功率谱。
Finally, the method of solving instantaneous acceleration power spectrum of nonstationary random response of arbitrarily point on vehicle is presented.
在加速度反应谱一致的前提下，研究了近断层速度脉冲的工程特性。
Under the condition of acceleration response spectrum being consistent, the engineering properties of near-fault velocity pulse are studied.
详细推导了多自由度结构多测点加速度响应的互功率谱模态矩阵展开式。
The modal matrix expansion of the cross power spectra of the multi-measurement acceleration response in the multi-DOF structure is derived in detail.
在此基础上给出了基于改进算法的距离-加速度谱图检测目标机动信息的模式并证明了该检测模式的合理性。
Based on that, a new mode of detection of information about maneuvering target on the basis of range-acceleration spectrum of the improved algorithm is proposed and its rationality is testified.
结果表明：随着车速的增加，座椅和地板振动加速度功率谱的幅值有所增加；
The result shows that the vertical accelerations of seat and floor increase with the increase in speed;
根据不同的振动加速度功率谱，可以诊断出气缸壁间隙值以确定柴油机是否需要修理。
From the differences of the vibration acceleration signal power spectrum, the cylinder clearance can be diagnosed, so that whether the engine may be repaired or not can be determined.
地面运动加速度功率谱模型为零均值的平稳高斯过程，描述为过滤白噪声施加于支撑各点。
The power spectral density function of ground acceleration can be described as filtered white noise applied on each support point.
在负重轮轮轴处安装加速度传感器，通过测量该处的时域加速度来间接计算路面功率谱，大大简化了操作过程。
Fixing the acceleration sensor in the axis of the wheel, by measuring the acceleration of the axe to calculate road power spectral indirectly, this greatly simplifies the operation process.
对比了竖向和水平向加速度、速度反应谱及谱与震级的变化特征。
The variations between both horizontal and vertical acceleration spectra, and velocity response with earthquake magnitudes have been compared.
本文研究并讨论了基岩上单一土层中沉积局部场地对入射地震波的加速度时程和加速度反应谱的放大作用。
The paper has studied and discussed the amplification of incident waves about acceleration time-domain and acceleration response spectrum in local deposit on the bedrock of single layered soil .
文末给出了绝对加速度反应谱的计算程序。
The computer program of the absolute acceleration response spectra is presented at the end of this paper.
为提高汽车耐久性能，基于道路谱的车身疲劳分析，以实车道路试验采集得到的加速度、位移和应变等数据作为输入进行虚拟迭代；
To improve the durability for automobile, virtual iteration is performed by inputting the data obtained by automotive road tests, including acceleration, displacement stress and so on.
传统的卫星振动测试由于采用加速度谱包络的方式获取振动台控制谱，导致了“过试验”的发生。
The over-testing problem is mainly caused by the traditional method in which the acceleration spectrum was enveloped and used as the control spectrum of the vibration table.
这说明对于实际地震加速度图，其功率谱是与均值速度反应谱相对应的。
This means that for actual earthquake accelerograms their power spectrum corresponds to mean response spectrum.
提出一种以渐进谱为目标谱的生成幅值和频率非平稳地震加速度时程的迭代方法。
Then a new iteration method is developed for generation of random accelerograms non-stationary both in amplitude and frequency which are compatible with target.
建立了非平稳随机响应瞬时加速度功率谱与瞬时位移功率谱之间的关系；
The relation between instantaneous acceleration power spectrum and instantaneous displacement power spectrum is presented.
应用rbf神经网络建立了汽车车身质心垂直加速度功率谱密度、俯仰角加速度功率谱密度和路面功率谱密度之间的非线性映射模型。
The nonlinear mapping relation among the PSD of vehicle body centroid vertical acceleration, pitching angular acceleration and the road surface were found by RBF neural networks.
运用NDFEPS - 2d计算了若干场地模型的地面加速度反应谱、速度反应谱、位移反应谱。
The ground surface response spectrum of acceleration, velocity and displacement were calculated using NDFEPS-2D.
我们在能量谱快速计算的基础上，研制成功了用于数字化加速度仪的自动地震信号检波器。
An automatic seismic signal detector based on a fast algorithm of energy spectrum has been developed for digital accelerograph.
实验结果表明，利用加速度反应功率谱密度变化能够准确识别并定位钢桥损伤的位置。
Experimental results show that the steel bridge damages can be detected and located by the changes of acceleration PSD.
用数据采集器对磨机的运动参数进行了在线测量，给出加速度曲线和加速度幅值谱图，据此计算出运转过程中的动态载荷均值和变异系数。
The movement parameter of this vibratom is measured on line by a data collector. The acceleration curve and amplitude are obtained to calculate the dynamic load in running.
最后给出了规范各种工况下的地面加速度功率谱参数值，为随机抗震计算分析提供了依据。
The parameters of random model of ground motion given in this study provide relatively reliable and accurate earthquake motion input for stochastic seismic response analysis of structures.
地震地面运动功率谱模型采用两次过滤白噪声模型，建立了地震地面运动谱强度与最大加速度均值之间的关系。
Its power spectral model is the twice-filtered white noise model. Moreover, the relation between the power spectral intensity and the mean value of maximum ground acceleration is set up.
采用防水型加速度计，在不同工况下测定洗涤冷却管的振动信号，并用小波变换分析信号；讨论了表观气速和静态液位对小波功率谱的影响，分析了冷却管振动的原因。
The effect of superficial gas velocity and static water height on the wavelet power spectrum is dis- cussed and the vibration mechanism of the tube is analyzed.
利用正弦扫频波激振钢桥，分析其损伤前后加速度反应功率谱密度的变化。
The bridge was actuated by sinusoid sweeping frequency wave, and then the power spectral density differences between the undamaged and damaged bridge were analyzed.
竖向反应谱及竖向与水平向加速度反应谱比是周期的函数、并与场地条件及震源距相关。
The results show that the V/H peak acceleration ratios are reduced as the distance of site to the fault is increased, and the vertical response spectra and …
然后，根据加速度峰值等效原则，选代计算得到地面的加速度功率谱密度曲线；
Then, the power spectral density (PSD) of the acceleration at ground level is evaluated by an iterative approach according to the principle of equivalent peak acceleration.
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