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

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

doi:10.1002/ecj.11383

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 journal › Article › peer-review

1 Citation (Scopus)

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 language	English
Pages (from-to)	41-48
Number of pages	8
Journal	Electronics and Communications in Japan
Volume	95
Issue number	7
DOIs	https://doi.org/10.1002/ecj.11383
Publication status	Published - 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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10.1002/ecj.11383

Cite this

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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. {\textcopyright} 2012 Wiley Periodicals, Inc. Electron Comm Jpn, 95(7): 41-48, 2012; Published online in Wiley Online Library (). DOI 10.1002/ecj.11383",

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T1 - Detection of knee-joint motions using two linear accelerometers for pendulum test

AU - Kusuhara, Toshimasa

AU - Jikuya, Kazuaki

AU - Nakamura, Takao

AU - Michinishi, Hiroyuki

AU - Yamamoto, Yoshitake

AU - Okamoto, Takuji

PY - 2012/7/1

Y1 - 2012/7/1

N2 - 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

AB - 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

KW - angle

KW - angular acceleration

KW - knee-joint motions

KW - linear accelerometer

KW - pendulum test

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

Abstract

Keywords

ASJC Scopus subject areas

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