Software for the synchronization of axes - Kollmorgen
Software for the synchronization of axes - Kollmorgen
Software for the synchronization of axes - Kollmorgen
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SOCAPEL SA SOFTWARE FOR SYNCHRONIZATION OF AXES 024.8068.A8.9 CALCULATION EXAMPLEThe purpose <strong>of</strong> this exercise is to calculate <strong>the</strong> parameters <strong>for</strong> <strong>the</strong> following application :A <strong>for</strong>m-roller bearing an impression is used to print pages rotating on a cylinder. The cylinderis driven by a free motor : this represents <strong>the</strong> "master shaft". An encoder mounted on <strong>the</strong>cylinder feeds a reference signal to an ST1, via a multiplier and an OEI board. The ST1controls <strong>the</strong> motor driving <strong>the</strong> <strong>for</strong>m-roller (via a reducing unit with too<strong>the</strong>d drive belt). Thelatter assembly represents <strong>the</strong> "slave shaft".Too<strong>the</strong>d pulley31 teeth120 teethPrinter rollcircumference 500 mmMotorResolverMultiplierx5O E IMaster shaftEncoder8,192 dashes / rev.Cylindercircumference 1,800 mmusable part 1,500 mmST1Figure 8.12Through <strong>the</strong> action <strong>of</strong> <strong>the</strong> multiplier on <strong>the</strong> OEI board, <strong>the</strong> ST1 will receive8,192 . 20 = 163,840 pulses per cylinder rotation. It can be seen from <strong>the</strong>respective circumferences that <strong>the</strong> system is synchronized <strong>for</strong> only threerevolutions <strong>of</strong> <strong>the</strong> <strong>for</strong>m-roller, after which desynchronizing occurs, withretarding <strong>of</strong> <strong>the</strong> slave shaft, <strong>the</strong>n resynchronizing. The periods <strong>of</strong> <strong>the</strong>master and slave are not identical.78
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