Vibration mode parameter identification method based on state observer
A technology of state observer and vibration mode, applied in vibration testing, instruments, measuring devices, etc., can solve problems such as poor analysis results, achieve accurate identification, strong method versatility, and simple realization
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[0046] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and technical solutions.
[0047] Such as figure 2 As shown, the free vibration experiment system is set up first. The free vibration experiment system is composed of aluminum cantilever beam 1, aluminum counterweight 2, steel counterweight 3, fixed end 4, laser displacement sensor group 5, data acquisition card 6 and computer 7; The laser displacement sensor group 5 is used as a measuring element to build a cantilever beam free vibration experimental device. The laser displacement sensor measures the displacement signal of the cantilever beam, and after the A / D conversion is performed by the data acquisition card 6, it is transmitted to the computer 7. The displacement signal is processed to obtain the precise modal parameters of the cantilever beam.
[0048] figure 1 It is a flow chart of the vibration modal parameter identification m...
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