Title :
The control of FES-induced ankle dorsiflexion of adults with spastic diplegia using a pulsewidth modulation pattern-a preliminary study
Author :
SU, Ivan Y W ; Chow, Daniel H K
Author_Institution :
Res. Unit, Spastics Assoc. of Hong Kong, Hong Kong
fDate :
28 Oct-1 Nov 1998
Abstract :
A universal pulsewidth modulation pattern was identified for adults with spastic diplegia in our previous characterisation study. As a preliminary clinical trial, the identified pattern was applied to 5 adults with spastic diplegia in supine position using an open-loop control system to attain and maintain a predetermined ankle dorsiflexion. A high percentage of success in obtaining a prolonged targeted response was demonstrated. This preliminary result suggested that by providing the therapist with a means to control the FES-induced ankle dorsiflexion, a prolonged motor response at desired angle could be achieved even after repeated stimulation
Keywords :
biocontrol; gait analysis; neuromuscular stimulation; orthotics; pulse width modulation; FES-induced ankle dorsiflexion control; adults with spastic diplegia; cerebral palsy; open-loop control system; orthotic role; postural muscle tone; prolonged motor response; prolonged targeted response; supine position; universal PWM pattern; Control systems; Electrical stimulation; Foot; Frequency; Muscles; Open loop systems; Orthotics; Pediatrics; Pulse modulation; Space vector pulse width modulation;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.744987