Space Grant Consortium - University of Wisconsin - Green Bay

Wire
A secondary investigation into the dynamics of the wire feed was conducted, with the eventual
goal o f s ynchronizing t he r obot m ovements w ith t he w ire w hen b eginning a nd ending a
deposition. T he wire was fastened to the LVDT and a ramp up t o 100 inches per minute and
ramp down to zero was recorded, shown in figure 4.
Figure 4 - Wire feed, ramp to 100 IPM and back to 0
Data collection was complicated by slippages between the LVDT-wire connection and between
the wire and the drive wheels, which can occur during normal operation. F urther investigation
into the wire dynamics is required.
Combined
To c apture a di fferential da ta s et o f t he s imultaneous m ovement of t he wire a nd t he r obot, a
special set up was designed. First, the LVDT was mounted to the stationary table. The wire was
fastened to the rod of the LVDT in the same way it was for the wire dynamics test. T he only
difference between this test and the wire test was including the movement of the x axis.
The wire fed in the negative x direction (by default), so by mounting the LVDT parallel to the x
axis and moving the x axis in the positive direction, a d ifferential data s et was captured. T he
wire was feeding, pushing into the LVDT at the same time the x axis was moving away from the
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