Vehicle vibration directly affects noise, vehicle vibration directly affects driving performance and ride comfort, and the vibration of rotating machinery is straight.
Then it reflects the running state of equipment, and the vibration of mechanical processing equipment directly affects the accuracy and effect of processing, and so on. With the development of technology
With the development, especially people's requirements for production and life are getting higher and higher, and the equipment is developing towards large-scale and high-speed, vibration brings more and more problems.
More and more prominent. In order to solve these problems, higher requirements are put forward for vibration testing method and signal analysis technology, such as measurement accuracy.
Height, high sensitivity, wide measuring range, etc. At present, there are three main vibration measurement methods: mechanical method, electrical method and optical method. But,
When mechanical testing is used, the testing device will exert a certain load on the workpiece, which will directly affect the testing results. Only suitable for low frequency and large amplitude vibration.
Measurement; Electrical measurement method has high sensitivity and wide frequency range, but it is easily disturbed by electromagnetic field. Optical method has high measurement accuracy and wide measurement range.
Non-contact method is widely used in precision measurement, sensor and vibration meter calibration.
In view of the above problems and the advantages and disadvantages of various measurement methods, this paper puts forward a set of three-dimensional vibration measurement system, which adopts the principle of laser interference.
The principle of laser Doppler not only has high measurement accuracy and sensitivity, but also can measure the three-dimensional vibration of the measured object.
Dynamic information. This paper expounds the hardware and software parts of the system, and describes the principle of the system in detail.
Citation:,, Chen, Song Yunfeng, Feng. Three-dimensional vibration measurement system based on LabVIEW and laser vibrometer [J]. Instruments and equipment,
20 15, 3(3): 55-62.