Laser Doppler vibration measurement method impact acceleration measurement device and method
A Doppler vibration measurement method and acceleration measurement technology, which is applied in the direction of acceleration measurement using inertial force, and achieves the effect of simple method.
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[0059] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0060] Such as figure 1 As shown, a laser Doppler vibrometer shock acceleration measurement device includes HOPKINSON impact machine, projectile body, cushion, HOPKINSON rod, anvil body, calibrated shock acceleration sensor, computer, digital oscilloscope, differential laser interferometer , signal conditioner and grating.
[0061] Its working process is: use the HOPKINSON impact machine to launch the projectile, hit the cushion and the HOPKINSON rod, make the HOPKINSON rod move, and then hit the anvil, so that the grating and the acceleration sensor to be calibrated will generate impact motion; the impact motion is passed through the grating. The differential laser interferometer converts it into an electrical signal, which is then collected and recorded by a digital oscilloscope to form waveform data; the shock acceleration waveform sequence is outpu...
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