Walking motion trajectory of hip powered orthotic device using quintic polynomial equation

Marwan Qaid Mohammed, Muhammad Fahmi Miskon*, Mohd Bazli bin Bahar, Fariz bin Ali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)
1 Downloads (Pure)

Abstract

In lower limb exoskeleton system walking motion profile generation, cubic polynomial is commonly used to generate smooth walking profile on flexion angle, velocity and acceleration data of three joint movements (ankle, knee and hip joints). However, cubic polynomial does not closely matched human motion. For this reason, a higher-order-polynomial i.e. quintic polynomial is proposed to gene- rate walking motion profile. Error analysis was conducted to measure how closely quintic polynomial could represent human walking motion profile. Result shows that quantic polynomial could closely represent human walking trajectory with maximum RMS error of 0.2607rad occurred during mid-swing phase.

Original languageEnglish
Pages (from-to)151-155
Number of pages5
JournalJournal of Telecommunication, Electronic and Computer Engineering
Volume8
Issue number7
Early online date1 Oct 2016
Publication statusPublished - 17 Nov 2016
Externally publishedYes

Keywords

  • Trajectory generation
  • Quintic polynomial
  • Exoskeletons device

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