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Abstract: The
modal parameters identification of flexible structure is presented by
Gauss filter and Hilbert transform method. The simulation results
indicate that the method can identify the close modal parameters of
structure effective and have the better anti-noise capability. Used the
method the modal parameters identification of space flexible truss
structure has been accomplished and the results more closely the theory
result of calculation than traditional method. The method can avoid
effectively the leak frequency phenomenon and have high precision of
identification.
Key
words: Gauss
filter Hilbert transform Flexible structure Modal parameter
identification
CLC No: TN911.7
国家自然科学基金重点资助项目(50135030).
Received 20040822, received in revised form 20041115
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