?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=CORDIC+Framework+for+Quaternion-based+Joint+Angle+Computation+to+Classify+Arm+Movements&rft.creator=Biswas%2C+D&rft.creator=Ye%2C+Z&rft.creator=Mazomenos%2C+EB&rft.creator=Jobges%2C+M&rft.creator=Maharatna%2C+K&rft.description=We+present+a+novel+architecture+for+arm+movement+classification+based+on+kinematic+properties+(joint+angle+and+position)%2C+computed+from+MARG+sensors%2C+using+a+quaternion-based+gradient-descent+method+and+a+2-link+model+of+the+upper+limb.+The+design+based+on+Coordinate+Rotation+Digital+Computer+framework+was+validated+on+stroke+survivors+and+healthy+subjects+performing+three+elementary+arm+movements+(reach+and+retrieve%2C+lift+arm%2C+rotate+arm)%2C+involved+in+%60making-a-cup-of-tea'+an+archetypal+daily+activity%2C+achieved+an+overall+accuracy+of+78%25+and+85%25+respectively.+The+design+coded+in+System+Verilog%2C+was+synthesized+using+STMicroelectronics+130+nm+technology%2C+occupies+340K+NAND2+equivalent+area+and+consumes+292+nW+%40+150+Hz%2C+besides+being+functionally+verified+up+to+25+MHz+making+it+suitable+for+real-time+high+speed+operations.+The+orientation%2C+arm+position+and+the+joint+angle%2C+are+computed+on-the-fly%2C+with+the+classification+performed+at+the+end+of+movement+duration.&rft.subject=MARG+sensor%2C+activity+recognition%2C+quaternion%2C+CORDIC%2C+classification&rft.publisher=IEEE&rft.date=2018-05-04&rft.type=Proceedings+paper&rft.publisher=IEEE+International+Symposium+on+Circuits+and+Systems+(ISCAS)&rft.language=eng&rft.source=+++++In%3A++Proceedings+of+the+2018+IEEE+International+Symposium+on+Circuits+and+Systems+(ISCAS).++++IEEE%3A+Florence%2C+Italy.+(2018)+++++&rft.format=text&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10114584%2F1%2FISCAS_orientation.pdf&rft.identifier=https%3A%2F%2Fdiscovery.ucl.ac.uk%2Fid%2Feprint%2F10114584%2F&rft.rights=open