Difference between revisions of "Damping Bender Corrections with VTube-LASER"

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Damping Bender Corrections

VTube-LASER can automatically damp correction data in order to avoid oversteer.

When to Use Damping

Two adjacent 90 degree bends that are close to each other followed by a long straight causes VTube (and other measuring solutions) to overcorrect the end of the long straight. The end is supposed be corrected to the middle straight (the MASTER) like this:

But what this tube configuration does often is a wag-the-tail oscillation in the correction loop like this:

The result is the correction causes the leg to overshoot the target.

So now VTube has two kinds of automatic damping. The first one reduces the correction by 50% in any of three sets of bender axis data (the Length, Rotation, and Bend). It allows for this damping in each axis independently – so they can choose the appropriate axis to damp. The second kind of damping is based on the previous adjustment values. Using the previous value causes the correction to be reduced even faster if this kind of oscillation exists.

So now VTube has two kinds of automatic damping. The first one reduces the correction by 50% in any of three sets of bender axis data (the Length, Rotation, and Bend). It allows for this damping in each axis independently – so they can choose the appropriate axis to damp. The second kind of damping is based on the previous adjustment values. Using the previous value causes the correction to be reduced even faster if this kind of oscillation exists.