An Experimental Test of Fuzzy Controller Based on Cycle-to-Cycle Control for FES-induced Gait: Knee Joint Control with Neurologically Intact Subjects

  • Takashi Watanabe
  • A. Arifin
  • T. Masuko
  • M. Yoshizawa
Part of the IFMBE Proceedings book series (IFMBE, volume 16)

Abstract

Functional Electrical Stimulation (FES) can be effective in assisting or restoring paralyzed motor functions caused by the spinal cord injury or the celebrovascular disease. The purpose of this study was to develop a control method of gait induced by FES. We had proposed a fuzzy control system based on cycle-to-cycle control for controlling hip, knee and ankle joints during the swing phase of FESinduced gait and evaluated it in computer simulation studies. In this report, the fuzzy controller was tested experimentally in controlling maximum knee extension angle stimulating the vastus muscles using surface electrodes with neurologically intact subjects. The fuzzy controller worked properly in regulating stimulation burst duration time and the maximum knee extension angle was controlled well. The experimental results suggested that the fuzzy controller would be practical in clinical applications for the control of FES-induced gait. However, it was also suggested that electrical stimulation with large burst duration time or muscle fatigue caused a change in muscle response.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Veltink PH (1991) Control of FES-induced cyclical movements of the lower leg. Med & Biol Eng & Comput 29:NS8–NS12Google Scholar
  2. 2.
    Franken HM, Veltink PH et al (1995) Cycle-to-cycle control of swing phase of paraplegic gait induced by surface electrical stimulation. Med & Biol Eng & Comput 33:440–451CrossRefGoogle Scholar
  3. 3.
    Arifin A, Watanabe T et al (2006) Design of Fuzzy Controller of the Cycle-to-Cycle Control for Swing Phase of Hemiplegic Gait Induced by FES. IEICE Trans Inf and Syst E89D:1525–1533CrossRefGoogle Scholar
  4. 4.
    Arifin A, Watanabe T et al (2003) Computer simulation study of the cycle-to-cycle control using fuzzy controllers for restoring swing phase of FES-induced hemiplegic gait. Proc. Symp. on Med. & Biol. Eng. 2003, Sapporo, Japan, pp.131–139Google Scholar
  5. 5.
    Eom GM, Watanabe T et al. (2002) Gradual potentiation of isometric muscle force during constant electrical stimulation. Med & Biol Eng & Comput 40:137–143CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Takashi Watanabe
    • 1
  • A. Arifin
    • 2
  • T. Masuko
    • 3
  • M. Yoshizawa
    • 1
  1. 1.Information Synergy CenterTohoku UniversitySendaiJapan
  2. 2.Dept. Electrical Eng.Institute of Technology "Sepuluh Nopember" (ITS)SurabayaIndonesia
  3. 3.Dept. Electrical and Communication Eng.Tohoku UniversitySendaiJapan

Personalised recommendations