这些节点可以从地面的振动测量出车辆的速度和方向。
They were able to measure the speed and direction of vehicles from ground vibrations.
仿真结果表明，空台正弦扫描试验仿真得到的台面各节点加速度幅值与试验结果比较接近，所建立的模型可用于试件振动台试验仿真。
The results indicate that the simulation results are close to the experimental ones that the modal can be used for simulation of vibration test with attached structural members on it.
本文介绍了实现在线振动检测和分析的无线传感器节点的超低功耗硬件设计。
The paper introduces the ultralow-power hardware design of wireless sensor nodes for online oscillation signal detection and analysis.
本系统采用网络扩展方案，单节点主要由振动数据采集、传输和实时信号处理单元组成。
This system adopts net expand scheme. Single unit includes vibration data collection, transmission and Real-time signal processor.
再根据哈密顿原理导出了悬索大挠度振动的有限体积离散方程，推出了索的整体节点力向量、质量矩阵和切线刚度矩阵。
The final finite-volume discretization equations are derived using the Hamilton principle. Meanwhile the global nodal force vector, mass matrix and tangent stiffness matrix of the cable are obtained.
针对各种不同的结构连接形式和振动波形，分别推导了各种节点单元矩阵的表达式。
The joint element matrix equations were developed for various structural configurations and wave types.
基于模态修改法优化主要振动区域腹部节点的速度来降低车内噪声。
Based on modes modification method, the acoustic pressure is found and reduced by optimizing the velocity of the nodal point in main vibrant area.
同时根据墙板在振动台试验中表现出的特性，分析带有橡胶垫的高强螺栓连接节点的工作特性。
Then, the seismic performance of the junction with rubber cushion and high strength bolts can be analyzed through the behavior of the wall panels'performance during the shaking table test.
同时根据墙板在振动台试验中表现出的特性，分析带有橡胶垫的高强螺栓连接节点的工作特性。
Then, the seismic performance of the junction with rubber cushion and high strength bolts can be analyzed through the behavior of the wall panels'performance during the shaking table test.
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