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A closed-loop control system to be used a hybrid RGO system

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2 Author(s)
Perez-Orive, J. ; Iberoamericana Univ., Lomas de Santa Fe, Mexico ; Mayagoitia, R.E.

A closed-loop control system for use with an hybrid reciprocating gait orthosis (RGO) has been developed. This control system uses two goniometers that measure the hip angle. The controller is based on a 68HC11 microcontroller. The controller has open-loop routines for standing up and sitting down and a routine for closed-loop gait. The control method used is hierarchical, having as an upper level a rule-based control and as a lower level an on/off control. The functional electrical stimulation needed to take each step can be interrupted either by pressing the contralateral button or when the angle between the two hips reaches a certain value. Even though no clinical tests have been made yet, the system has been bench-tested and it can be said that it will add the benefits of feedback control to those of the open-loop hybrid orthosis

Published in:
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Date of Conference: 3-6 Nov 1994

Page(s):
410 - 411 vol.1
Meeting Date :
03 Nov 1994-06 Nov 1994
Print ISBN:
0-7803-2050-6
INSPEC Accession Number:
5004113
Conference Location :
Baltimore, MD
Digital Object Identifier :
10.1109/IEMBS.1994.411979
Product Type:
Conference Publications

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