A control system for controlling {HEAD ~ rotation} of {TAIL ~ a servomotor} to vertically move a load supported by a flexible support device, the control system comprising: 
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A control system for controlling { HEAD ~ rotation } of { TAIL ~ a servomotor } to vertically move a load supported by a flexible support device , the control system comprising :
OTH OTH OTH OTH OTH 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 OTH OTH OTH