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Why is the FRF amplitude enlarged 10 times after using LSCE method estimation???

Thread starter needtobefinished
Start date Jan 12, 2014

Status: Not open for further replies.

Jan 12, 2014

needtobefinished

Mechanical

I have used the LSCE method to identify the modal parameters(Natural frequency, damping ratio, and modal constant(no normalization)).
And apply these parameters into the modal formula. And then draw the estimated FRF.

But the amplitude was enlarged 10times? WHY???