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