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I need to use PCI7344 to control two 3phase brushless servo motors, I use MAX to auto-tune each motors one by one, but after that, I find still cant control them at the same time. Anyone can help?
You may need to manually fine-tune the system after getting the best autotune for your two servos. You can test this in the 2-D interactive section of MAX. Here is a link to a tutorial that discusses the tuning process in detail: http://zone.ni.com/devzone/conceptd.nsf/webmain/4B7775373E4AE64986256B6000691505
Hope this helps - Julie S Applications Engineer National Instruments
