The multiple coherence function can be defined by:
These values are FRF auto/cross powers in my context. Multiple coherence means there are multiple inputs. For 2 inputs the dimensions of Pxy is 2x1, Pxx is 2x2, Pyy is 1x1. I'm expecting the plot to be mostly 1 with dips at the FRF...
I think there are multiple errors in the paper "a poly reference implementation of the maximum likelihood complex frequency domain estimator and some industrial applicatinos.pdf"
I have programmed up the LSCF, MLFD, and p-LSCF methods and am having trouble with the final piece p-MLFD. The...
Hello Everyone,
When using the poly-reference least squares complex frequency domain estimator (p-LSCF) to estimate modal parameters, you iteratively increase the model order and plot successive pole estimates on a stability diagram. In the literature it says you can only increase the model...
Hello Everyone,
When using the poly-reference least squares complex frequency domain estimator (p-LSCF) to estimate modal parameters, you iteratively increase the model order and plot successive pole estimates on a stability diagram. In the literature it says you can only increase the model...
Hi
I've ran a random vibration analysis (sol 111) and I have made an element stress punch file (ELSTRESS(SORT2,PUNCH,REAL)), but when I open the file I don't know how to read it. I see the grid Id and the frequency but the rest of the numbers I don't know what they are. Does anyone know of a...
