Detection of knee-joint motions using two linear accelerometers for pendulum test

Toshimasa Kusuhara, Kazuaki Jikuya, Takao Nakamura, Hiroyuki Michinishi, Yoshitake Yamamoto, Takuji Okamoto

Research output: Contribution to journalArticle

Abstract

In order to solve nonlinear differential equations concerning spinal stretch reflexes in the pendulum test, mutually synchronized values of the angle, angular velocity, and angular acceleration in the knee joint are frequently used as initial values. In this study, we propose a method which can detect both the angle and angular acceleration in the knee joint at the same time by simple operations on the outputs of two accelerometers. The principle of knee-joint motion detection, the evaluation of amplitude accuracy in the measured waveforms, and the evaluation of synchronization accuracy are successively described. © 2012 Wiley Periodicals, Inc. Electron Comm Jpn, 95(7): 41-48, 2012; Published online in Wiley Online Library (). DOI 10.1002/ecj.11383

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalElectronics and Communications in Japan
Volume95
Issue number7
DOIs
Publication statusPublished - Jul 1 2012

Keywords

  • angle
  • angular acceleration
  • knee-joint motions
  • linear accelerometer
  • pendulum test

ASJC Scopus subject areas

  • Signal Processing
  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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