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Related Experiment Videos

Evaluation of FNS control systems: software development and sensor characterization

J Riess1, J J Abbas

  • 1Center for Biomedical Engineering, University of Kentucky, Lexington 40506-0070, USA. jaries0@pop.uky.edu

Biomedical Sciences Instrumentation
|January 1, 1997
PubMed
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Functional Neuromuscular Stimulation (FNS) systems restore limb function in spinal cord injury patients. New software and sensor error compensation enhance FNS control system development and evaluation.

Area of Science:

  • Biomedical Engineering
  • Rehabilitation Technology
  • Neuroscience

Background:

  • Functional Neuromuscular Stimulation (FNS) enables paralyzed limb function in individuals with thoracic spinal cord injury.
  • Restoring posture and movement is crucial for improving quality of life after spinal cord injury.
  • Advanced control algorithms are essential for effective FNS system performance.

Purpose of the Study:

  • To describe software developed for implementing FNS control systems.
  • To characterize a motion tracking sensor system for FNS evaluation.
  • To improve the accuracy of sensor data used in FNS control.

Main Methods:

  • Development of a versatile software package using LabVIEW for FNS control.
  • Integration of sensor systems (Flock of Birds) for 6-DOF limb tracking.

Related Experiment Videos

  • Characterization of sensor errors and development of nonlinear polynomial compensation models.

    • Main Results:

    • The LabVIEW software facilitates real-time FNS control and data processing.
    • Sensor error characterization identified key sources of inaccuracy.
    • Nonlinear polynomial compensation reduced distance measurement error by 90%, achieving <1 cm maximum error.

    Conclusions:

    • The developed software and sensor compensation enhance the evaluation of FNS control algorithms.
    • Accurate motion tracking is vital for precise FNS system control and rehabilitation.
    • This work contributes to the advancement of FNS technology for restoring function after spinal cord injury.