Error-state Kalman filter for lower-limb kinematic estimation: Evaluation on a 3-body model.
Error-state Kalman filter for lower-limb kinematic estimation: Evaluation on a 3-body model.
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DOI:
10.1371/journal.pone.0249577
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发表时间:
2021
期刊:
影响因子:
3.7
通讯作者:
Perkins NC
中科院分区:
文献类型:
--
作者:
Potter MV;Cain SM;Ojeda LV;Gurchiek RD;McGinnis RS;Perkins NC
Human lower-limb kinematic measurements are critical for many applications including gait analysis, enhancing athletic performance, reducing or monitoring injury risk, augmenting warfighter performance, and monitoring elderly fall risk, among others. We present a new method to estimate lower-limb kinematics using an error-state Kalman filter that utilizes an array of body-worn inertial measurement units (IMUs) and four kinematic constraints. We evaluate the method on a simplified 3-body model of the lower limbs (pelvis and two legs) during walking using data from simulation and experiment. Evaluation on this 3-body model permits direct evaluation of the ErKF method without several confounding error sources from human subjects (e.g., soft tissue artefacts and determination of anatomical frames). RMS differences for the three estimated hip joint angles all remain below 0.2 degrees compared to simulation and 1.4 degrees compared to experimental optical motion capture (MOCAP). RMS differences for stride length and step width remain within 1% and 4%, respectively compared to simulation and 7% and 5%, respectively compared to experiment (MOCAP). The results are particularly important because they foretell future success in advancing this approach to more complex models for human movement. In particular, our future work aims to extend this approach to a 7-body model of the human lower limbs composed of the pelvis, thighs, shanks, and feet.
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影响因子:
2.4
作者:
Ojeda, Lauro;Borenstein, Johann
通讯作者:
Borenstein, Johann
DOI:
10.1115/1.2798313
发表时间:
1998-04-01
影响因子:
1.7
作者:
Garcia, M;Chatterjee, A;Coleman, M
通讯作者:
Coleman, M
DOI:
10.3390/s150818813
发表时间:
2015-07-31
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
作者:
Bouvier B;Duprey S;Claudon L;Dumas R;Savescu A
通讯作者:
Savescu A
影响因子:
2.4
作者:
Sutherland, DH
通讯作者:
Sutherland, DH
DOI:
10.3390/s140406891
发表时间:
2014-04-16
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
作者:
Seel T;Raisch J;Schauer T
通讯作者:
Schauer T