NDLI: Control of limb movements by functional neuromuscular stimulation

Content Provider	IEEE Xplore Digital Library
Author	Lan, N. Crago, P.E.
Copyright Year	1983
Abstract	Summary form only given. Functional neuromuscular stimulation (FNS) provides a means to restore motor functions for spinal cord injury (SCI) and stroke patients. Most FNS clinical systems operate under open-loop control methods, but closed-loop hand grasp systems are now being tested. Closed-loop control is most suitable for motor tasks requiring low speed and high accuracy, such as hand grasp. Open-loop feedforward control is desirable for high speed motor acts such as arm movement and walking. To satisfy the requirements of speed and accuracy, and to account for the biomechanics of FNS task control, a combined open-loop and closed-loop controller structure design, called the perturbation controller, is proposed. In this control system, the patient commands initiate the task by instructing the controller with movement direction, distance and speed. The feedforward controller interprets the instructions and generates the desired movement trajectory, stiffness, and feedforward input to activate muscles.<>
Starting Page	83
Ending Page	84
Page Count	2
File Size	257856
File Format	PDF
ISSN	07395175
Volume Number	11
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-12-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Neuromuscular stimulation Open loop systems Control systems Muscles Error correction Biomechanics Automatic control Adaptive control Force feedback Laboratories
Content Type	Text
Resource Type	Article
Subject	Biomedical Engineering

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