How many revolutions of data are required for order analysis?

[chrishassan]

Hello,

I have a requirement to collect, process, and save data for several hours at a user specified sampling interval.  I suspect that I will need to use the speed of the motor to determine how many revolutions of data I am collecting.

Is there a minimum number of revolutions of data required for order analysis?

Thanks,

Chris

[Nick_F1]

HI Chris,

Thank you for posting on the National Instruments forum.  To determine how many revolutions of data that you are collecting, you will need to use the tachometer signal that is coming off of your motor and is defined as pulses per revolutions.  With this, the absolute minimum that you need is two pulses to figure out how fast your motor is spinning.  With only two pulses, however, it will be very hard to determine the order information. 

[unclebump]

Nick,

your link doesn't work for me.

[Nick_F1]

Hi UncleBump,

I apologize, here is the corrected link.

How to Select the Window Length When Extracting Orders with Order Analysis [link removed; product no longer available]