IMU-based joint angle measurement for gait analysis.
IMU-based joint angle measurement for gait analysis.
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DOI:
10.3390/s140406891
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发表时间:
2014-04-16
期刊:
影响因子:
--
通讯作者:
Schauer T
中科院分区:
文献类型:
--
作者:
Seel T;Raisch J;Schauer T
This contribution is concerned with joint angle calculation based on inertial measurement data in the context of human motion analysis. Unlike most robotic devices, the human body lacks even surfaces and right angles. Therefore, we focus on methods that avoid assuming certain orientations in which the sensors are mounted with respect to the body segments. After a review of available methods that may cope with this challenge, we present a set of new methods for: (1) joint axis and position identification; and (2) flexion/extension joint angle measurement. In particular, we propose methods that use only gyroscopes and accelerometers and, therefore, do not rely on a homogeneous magnetic field. We provide results from gait trials of a transfemoral amputee in which we compare the inertial measurement unit (IMU)-based methods to an optical 3D motion capture system. Unlike most authors, we place the optical markers on anatomical landmarks instead of attaching them to the IMUs. Root mean square errors of the knee flexion/extension angles are found to be less than 1° on the prosthesis and about 3° on the human leg. For the plantar/dorsiflexion of the ankle, both deviations are about 1°.
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影响因子:
2.4
作者:
Brennan, A.;Zhang, J.;Li, Q.
通讯作者:
Li, Q.
DOI:
10.3390/s110201489
发表时间:
2011
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
作者:
Sabatini AM
通讯作者:
Sabatini AM
DOI:
10.1109/tim.2009.2024367
发表时间:
2010-02-01
影响因子:
5.6
作者:
Cheng, Peng;Oelmann, Bengt
通讯作者:
Oelmann, Bengt
影响因子:
3.2
作者:
Cutti, Andrea Giovanni;Ferrari, Alberto;Ferrari, Adriano
通讯作者:
Ferrari, Adriano
影响因子:
2.4
作者:
Takeda, Ryo;Tadano, Shigeru;Yoshinari, Satoshi
通讯作者:
Yoshinari, Satoshi