The control system takes into account {HEAD ~ the displacement} of {TAIL ~ the platform} from the support ends and adjusts the Z axis displacement during Y axis traversal 
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The control system takes into account { HEAD ~ the displacement } of { TAIL ~ the platform } from the support ends and adjusts the Z axis displacement during Y axis traversal
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH