a means for control that disallows {HEAD ~ an operation} that would increase {TAIL ~ the work radius} if an overload state is detected by said means for comparison 
increase
a means for control that disallows { HEAD ~ an operation } that would increase { TAIL ~ the work radius } if an overload state is detected by said means for comparison
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH