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Servo Deadband Programming?

Old 11-15-2006, 09:55 PM
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Bob Pastorello
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Default Servo Deadband Programming?

Okay.... stock 59xx servos seem to come programmed with "2" (which means approx. 6 usec wide deadband)... if going to "1", will I "see" or "feel" a difference in the centering of the servo?

Does the deadband width directly relate to the accuracy / precision of returning to center after being deflected?

Does running the tightest deadband run any risks of gear train or motor premature wear/failure?
Old 11-16-2006, 10:25 AM
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mglavin
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Default RE: Servo Deadband Programming?

Bob,

“1” represents approximately 1-2us while “2” represents 3-4us. I can’t say you’ll feel the difference but you should in theory. There are many variables in play such as linkage ratios, surface stiffness, linkage slop and more.

Yes, deadband does relate to accuracy.

There are NO problems with tighter deadbands as a rule, ganged installations require accurate servo programming and linkage set-ups or binding will be present which creates undesirable current draw and sustained loads which in turn can be detrimental to servo health.
Old 11-16-2006, 10:39 AM
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Bob Pastorello
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Default RE: Servo Deadband Programming?

Thanks. Confirms what I thought, which seems to be an interesting topic on the GSAL list, eh?

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