Igor Chudov wrote: > I now have a sweet quiet little Bridgeport Interact mill that does not > act like it is PMSing 30 days a month. 90 IPM on X and Y (I limited > myself to 60 IPM on Z for safety). Quick to home and quiet. > > That double velocity loop, ad I now realize, was not good for what I > was trying to do. > Well, actually, the velocity loop is FINE for what you were trying to do, but it has to be tuned right. Obviously, your velocity loops were not tuned right, this the difficulty. But, a torque-mode loop is fine, too, and I agree, it is often easier to tune.
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