Hi,
I'm using the Sound and Vibration toolkit to do order analysis. My VI takes temporal data as input (analyzed channels + tachometer) and generates a graph of amplitude vs tachometer frequency.
I basically use the two express vi depicted hereunder:
My problem is that there are very few informations about the effect of the parameters of the method and their relationship.
For instance:
- what is exactly the "bandwidth [order]" parameter? It seems to determine the number of revolution taken into account for the analysis. Am I correct?
- does the size of the block of data that is inputed to the VI have an influence on the results? If yes what is the influence?
- It seems that the time the order analysis VI takes is longer for each new iteration. Isn't there some kind of memory leak somewhere or memory not correclty prealocated?
- Does the frequency at which the tachometer is computed have an influence on the resulting order tracking graph?
- I get very "edgy" results like if the computation was made in steps (see picture). How is it possible?Is there a way to correct that effect?
Thanks in advance
peper