Control apparatus and method
First Claim
1. A method for correcting a reversal point signal for a traverse mechanism for guiding a strand from a rotating reference wheel back and forth between reveral points in end flange surfaces of a rotating spool to form a helical winding in successive layers onto a barrel of the spool, comprising the steps of:
- sensing the angular velocity of the reference wheel and providing a reference wheel signal having a magnitude indicative thereof;
sensing the angular velocity of the spool and providing a spool signal indicative thereof;
providing a wheel radius signal having a magnitude indicative of the radius of the reference wheel;
determining the actual radius from the spool'"'"'s rotation axis of the topmost layer on the barrel at a selected reference point between the spool'"'"'s flanges by dividing the magnitude of said reference wheel signal by the magnitude of said spool signal to obtain a first ratio signal and multiplying the magnitude of said first ratio signal by said wheel radius signal and providing an actual topmost layer radius signal;
determining proper topmost layer radius from the spool'"'"'s rotation axis at a rversal point by determining the point of intersection of a line parallel to the spool barrel and lying in the actual topmost layer, as indicated by the magnitude of said actual topmost layer radius signal, and a fixed line lying in the flange surface corresponding to said reversal point and provindg a proper topmost layer radius signal having a magnitude indicative of said proper topmost layer radius;
determining the actual reversal point topmost layer radius at said reversal point by dividing the magnitude of said reference wheel signal by the magnitude of said spool signal to obtain a second ratio signal and multiplying the magnitude of said second ratio signal by the magnitude of said wheel radius signal to obtain an actual reversal point topmost layer radius signal; and
comparing the magnitude of said proper topmost layer radius signal to the magnitude of said actual reversal point topmost layer radius signal and altering the reversal point signal by a selected incremental amount in the presence of a difference in magnitudes.
14 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus for correcting reversal points for a traverse for guiding a strand from a reference wheel onto a spool utilize signals indicative of the angular velocity of both a reference wheel and the spool to determine first the actual spool radius at a reference point away from the spool'"'"'s flanges, then determining the proper spool radius at each reversal point and then determining the actual spool radius at each reversal point. The actual spool radius and the proper spool radius at each reversal point are compared and if a difference greater than a predetermined amount is present, the reversal point is altered by a selected incremental amount.
41 Citations
2 Claims
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1. A method for correcting a reversal point signal for a traverse mechanism for guiding a strand from a rotating reference wheel back and forth between reveral points in end flange surfaces of a rotating spool to form a helical winding in successive layers onto a barrel of the spool, comprising the steps of:
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sensing the angular velocity of the reference wheel and providing a reference wheel signal having a magnitude indicative thereof; sensing the angular velocity of the spool and providing a spool signal indicative thereof; providing a wheel radius signal having a magnitude indicative of the radius of the reference wheel; determining the actual radius from the spool'"'"'s rotation axis of the topmost layer on the barrel at a selected reference point between the spool'"'"'s flanges by dividing the magnitude of said reference wheel signal by the magnitude of said spool signal to obtain a first ratio signal and multiplying the magnitude of said first ratio signal by said wheel radius signal and providing an actual topmost layer radius signal; determining proper topmost layer radius from the spool'"'"'s rotation axis at a rversal point by determining the point of intersection of a line parallel to the spool barrel and lying in the actual topmost layer, as indicated by the magnitude of said actual topmost layer radius signal, and a fixed line lying in the flange surface corresponding to said reversal point and provindg a proper topmost layer radius signal having a magnitude indicative of said proper topmost layer radius; determining the actual reversal point topmost layer radius at said reversal point by dividing the magnitude of said reference wheel signal by the magnitude of said spool signal to obtain a second ratio signal and multiplying the magnitude of said second ratio signal by the magnitude of said wheel radius signal to obtain an actual reversal point topmost layer radius signal; and comparing the magnitude of said proper topmost layer radius signal to the magnitude of said actual reversal point topmost layer radius signal and altering the reversal point signal by a selected incremental amount in the presence of a difference in magnitudes.
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2. Apparatus, for correcting a reversal point signal for a traverse mechanism for guiding a strand from a rotating reference wheel back and forth between reversal ponts in end flange surfaces of a rotating spool to form a helical winding in successive layers onto a barrel of the spool, comprising:
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means responsive to the angular velocity of the reference wheel for providing a reference wheel signal having a magnitude indicative of the angular velocity of the reference wheel; means responsive to the angular velocity of the spool for providing a spool signal indicative of the angular velocity of the spool; means for providing a wheel radius signal having a magnitude indicative of the radius of the reference wheel; and signal processing means, responsive to said wheel radius signal, said reference wheel signal and said spool signal for determing the actual radius from the spool'"'"'s rotation axis of the topmost layer on the barrel at a selected reference point between the spool'"'"'s flanges by dividing the magnitude of said reference wheel signal at said reference point by the magnitude of said spool signal at said reference point to obtain a first ratio signal and multiplying the magnitude of said first ratio signal by said wheel radius signal to obtain an actual topmost layer radius signal at said reference point, said signal processing means determining proper topmost layer radius from the spool'"'"'s rotation axis at a reversal point by determining the point of intersection of a line parallel to the spool barrel and lying in the actual topmost layer at said reference point, as indicated by the magnitude of said actual topmost layer radius signal, and a fixed line lying in the flange surface at said reversal point and providing a proper topmost layer radius signal having a magnitude indicative of said proper topmost layer radius, said signal processing means determining the actual reversal point topmost layer radius at said reversal point by dividing the magnitude of said reference wheel signal by the magnitude of said spool signal to obtain a second ratio signal and multiplying the magnitude of said second ratio signal by the magnitude of said wheel radius signal to obtain an actual reversal point topmost layer radius signal, said signal processing means comparing the magnitude of said proper topmost layer radius signal to the magnitude of said actual reversal point topmost layer radius signal and altering the reversal point signal by a selected incremental amount in the presence of a difference in magnitudes.
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Specification