Order Analysis: Fractional Orders?

[chassan]

Hello,

I have a requirement to monitor the 1/2, 1, and 2 orders for a rotating machine.  Can I just put 0.5, 1, 2 into the "orders to compute" array input to the OAT Order Magnitude and Phase.vi to get the mag and phase values for desired orders? (i.e. Is it as simple as that?).

Thanks,

Chris 

[tnek]

Hi Chris,

You're assumption is correct. You can create an array of orders (integer or non-integer) as the input to the OAT Order Magnitude and Phase function. Since orders are multiples of a fundamental frequency, another frequency can be monitored by entering the corresponding order. The screenshot below shows the Order Tracking Magnitude and Phase (Offline) example with multiple orders being monitored. The example can be found in the Example Finder browsing by task under Toolkits and Modules » Order Analysis » Functions » Order Tracking Magnitude and Phase (Offline). In the block diagram, the highlighted array is the control which is connected to the Orders to Compute input of the OAT Order Magnitude and Phase function. I hope this helps.



Regards,
Kent
Applications Engineer


Message Edited by tnek on 03-15-2008 12:42 AM