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操作震动计要小心。Handle the vibrometer with great care.

通用振动测试仪一般不具备较长时间的在线记录功能。Universal vibrometer has not the function of lasting and on-line recording.

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描述一台两维激光多普勒测振装置，介绍其基本原理、组成部分及工作过程。This paper describes the principle structure and operation process of a two dimensional laser Doppler vibrometer.

介绍了一种结构简单、价格低、带有反射率和亮度补偿的光纤振动计。A simple and inexpensive optical fiber vibrometer with reflectivity and illuminating power compensation was presented.

传统测振仪器的数据采集与处理系统结构复杂，成本较高，不易携带。The data acquisition and processing system of traditional vibrometer is structural complex, high cost and difficult to carry.

优化橡胶减震垫的布局可以提高激光测振仪隔震系统的稳定性。At last, the stability of the laser vibrometer system could be improved by optimizing the placement of anti-shock rubber pads.

问题是通常采用的位移测振仪所记录的制动反应，其初始波形有畸变现象，这一现象严重地影响了分析的准确性。In the analysis we found there exists the distortion of the wave form in initial part of the record obtained from the vibrometer.

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本文研究了半导体激光自混合干涉测振仪的调制与解调技术。This paper studies the modulation technique and demodulation technique of the self-mixing interference semiconductor laser vibrometer.

以4120SG柴油机为研究对象，提出基于激光测振的表面振动法测量柴油机辐射噪声。The laser vibrometer based on the surface vibration for measuring and analyzing the radiating noise of the 4120SG diesel engine is proposed.

并对特定参数的零差测振系统进行了数值仿真，仿真结果与理论分析吻合。The homodyne vibrometer system of specific parameters was simulated numerically and the simulation results coincided with the theoretical analysis.

该实验方法对于采用单头激光测振仪测试结构的三维整体模态具有一定的参考价值。This experiment method has some reference value on testing the 3-dimension modal shapes of a structure by using a single scanning laser vibrometer.

用激光外差测振装置测量了扬声器纸盆振动幅度与激励电压及激励频牢之间的关系。The relation between vibration amplitude and exciting voltage, also exciting frequencyof the loudspeaker are measured by laser heterodyne vibrometer.

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在本论文中亦将使用应变规、雷射都卜勒振动仪及压电式感测器三种量测技术并与光纤光栅的量测结果做比较以确定研究成果的可行性与正确性。Another three measuring techniques, strain gage, laser Doppler vibrometer and NBS transducer, are also used in this study to verify the results obtained from grating-based fiber.

本文借助于层栅理论和琼斯矢量综述其机理方面的理论与实验研究工作，并举例说明基于旋转场辨向各种测试手段中信号叠加方案的一般分析方法。Based on the layered phase grating and revolving field discrimination, a laser Doppler vibrometer system has been studied which provides a potential method of velocity measurement.

本文介绍了一种新研制成功的光电脉冲式测振传感器，用于对涡轮机械的叶片在运行条件下的振动进行非接触式监测。A new type of photoelectric pulse vibrometer developed recently is presented in the paper. It can be used to contactlessly monitor blade vibration in turbo machines during operation.

微构件通过硬性粘接方式安装在底座上，其振动响应信号由激光多普勒测振仪进行非接触式测量，计算机对测量数据进行频谱分析后得到微构件谐振频率。The oscillation signal of microstructure was acquired by Laser Doppler Vibrometer without any distortion, and the data was processed further by computer to get the natural frequency.

针对超低频标准振动系统易受外界振动干扰的问题，研究了超低频标准振动台与激光测振仪的隔振基础设计技术。Considering influence of external vibration on ultra-low frequency standard vibration systems, the vibration insulating foundation for vibration tables and a laser vibrometer is studied.

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电厂中通常根据汽轮机振动信号来间接监测动静摩擦故障，但由于测振仪表的局限性及转子质量较大等原因，效果不理想。It is not very effective to monitor friction between rotor and stationary of a steam turbine by vibration signal indirectly in power station because of the restriction of vibrometer and heavy rotor.