In accordance with the present invention, {HEAD ~ overall deformation} is closely estimated from {TAIL ~ the outputs} of just two deformation sensors, indicated at 18 and 20 
is closely estimated from
In accordance with the present invention , { HEAD ~ overall deformation } is closely estimated from { TAIL ~ the outputs } of just two deformation sensors , indicated at 18 and 20
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH