Inert Production
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I've seen this problem a few times- seems related to the following
* Electrical noise / momentary power drops on incoming power
* IP address conflicts (other computer / device with same IP)
* Electrical noise on digital / analog inputs or outputs
* Incorrect voltage applied to digital inputs / outputs
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Having problems controlling velocity ripple at all speeds. Dual motor drive with cross coupling enabled. It's difficult to set Kp i and d gain values manually. Low frequency ripple at around 5 Hz, causing other motors to have trouble holding position. Have a higher frequency ripple also, around 22Hz but less of a problem. Turning off contra-drive doesn't help. Any tips?
Velocity ripple
in Power PMAC
Posted
I tried notch filters and they worked very well, the problem is that I lost my positioning accuracy and I need to hold position as close as possible. Everything adds up and the velocity and acceleration following error ripples are what's hurting the most at the moment