FUZZY LOGIC CONTROL FOR ANKLE FOOT ORTHOSES EQUIPPED WITH MAGNETORHEOLOGICAL BRAKE

Authors

  • Dimas Adiputra Malaysia Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), 54100, Kuala Lumpur, Malaysia
  • Ubaidillah Ubaidillah Mechanical Engineering Department, Faculty of Engineering, Universitas Sebelas Maret, Surakarta, Central Java, Indonesia
  • Saiful Amri Mazlan Malaysia Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), 54100, Kuala Lumpur, Malaysia
  • Hairi Zamzuri Malaysia Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), 54100, Kuala Lumpur, Malaysia
  • Mohd Azizi Abdul Rahman Malaysia Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia (UTM), 54100, Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.11113/.v78.7942

Keywords:

Ankle foot orthosis, foot drop, passive control, walking gait, electromyography bio signal, fuzzy logic controller, walking experiment

Abstract

This study focused on the development of passive control ankle foot orthosis (PICAFO) for a specific purpose such as preventing foot drop in the post-stroke patient. The PICAFO utilized the magnetorheological (MR) brake as the actuator in which the braking torque was controlled by regulating direct current (DC) from current driver. The Fuzzy Logic Controller (FLC) was employed to control output voltage for current driver based on the inputs, i.e. Electromyography (EMG) bio signal and ankle position. Walking experiment to test the controller was carried out on a single subject where the input and output FLC was monitored and logged. The results showed that the output voltage of the FLC was 94.41% of the maximum output (high) on forward ankle position during swing phase and gradually increase from 9.667% to 77.34% of maximum output during stance phase. The FLC successfully controlled the output voltage according to the required needs. According to the experimental results, the FLC strategy was applicable for PICAFO realizing it contributes to prevention of foot drop.

References

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Published

2016-10-31

Issue

Section

Science and Engineering

How to Cite

FUZZY LOGIC CONTROL FOR ANKLE FOOT ORTHOSES EQUIPPED WITH MAGNETORHEOLOGICAL BRAKE. (2016). Jurnal Teknologi, 78(11). https://doi.org/10.11113/.v78.7942