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problem pi cascade with pci 7354

problem pi cascade with pci 7354

i used PCI 7354 with UMI-7774, My project is control DC servo motor
(Coordinates: 180 v 16 A 3kw 2400 rpm) 4-Quardrant PI-Cascade control type, It was applying to Analog Feedback (Current loop and Velocity loop).
Now i can control open loop type, but i can't control close loop type, because i don't understand how to use system ''All PID .vi" and calculate voltage output for how to control Duty cycle,This is different from "PID.vi" of Control Design & Simulation Block.

 

maybe it possible help me to guide a block diagram.

 

 

 

Third-Party Drive.JPG

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Re: problem pi cascade with pci 7354

Hello SYOTOS

 

Thank you very much for getting in touch with us.  I have tried searching for any references to the "All PID .vi" and I can't find any.  Is this a custom VI that you have built?  If you are interested in using our LabVIEW PID and Fuzzy Logic toolkit, you may find the user manual helpful.

 

LabVIEW PID and Fuzzy Logic Toolkit User Manual
http://digital.ni.com/manuals.nsf/websearch/A59DB85CDCB468E1862575BC000D0773

 

Please let me know how I can be of further assistance and if you can provide me a reference to the "All PID .vi"

 

Thank you very much!

Sincerely,

Greg S.
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Re: problem pi cascade with pci 7354

Greg S    Thank for replied

 

sorry for All PID.VI , This All PID.VI  is mean "Load All PID Parameters.flx" 

You will found in the Vistion and Motion " Block

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Re: problem pi cascade with pci 7354

Hello SYOTOS

 

If you press "CTRL + H" that will bring up the show context help, if you hover over the "Load All PID Parameters.flx", you should be able to select "Show Detailed Help" which will describe in detail how to use this function.  Please let me know if this is sufficient.

 

Can you please elaborate on calculating the voltage output for controling the duty cycle?  Are you looking at coming up with a mathematical respresentation of your motor or third party drive?  Please let me know!

Sincerely,

Greg S.
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