Sensory feed-back in hybrid orthotic system

Author

Popovic, Dejan ; Schwirtlich, Laszlo

Author_Institution

Fac. of Electr. Eng., Belgrade Univ., Yugoslavia

fYear

1989

fDate

9-12 Nov 1989

Firstpage

1475

Abstract

Motor restoration of paralyzed humans using a hybrid orthotic system (HOS) known as artificial reflex control is discussed. Artificial reflex control is a nonnumerical procedure requiring sensory information. The sensory information for a hybrid brace combining functional electrical stimulation and an externally controlled modular brace consists of ground force record, angular displacement from the gravity line, joint angles and electromyogram (EMG) signals. Sensors for the HOS are described. The use of an EMG monitor is believed to increase the efficacy of the HOS by reducing muscle fatigue, increasing safety, and reducing the use of external power. External power is used only in that phase of the gait in which muscular function is not adequate

Keywords

feedback; orthotics; angular displacement; artificial reflex control; electromyogram; externally controlled modular brace; functional electrical stimulation; gait phase; gravity line; ground force record; hybrid brace; hybrid orthotic system; joint angles; muscular function; nonnumerical procedure; paralyzed humans; sensory feedback; sensory information; Control systems; Displacement control; Electromyography; Force control; Force sensors; Gravity; Humans; Neuromuscular stimulation; Orthotics; Sensor phenomena and characterization;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in

Conference_Location

Seattle, WA

Type

conf

DOI

10.1109/IEMBS.1989.96296

Filename

96296