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Locomotion Prediction for Lower Limb Prostheses in Complex Environments via sEMG and Inertial Sensors
Joint Authors
Li, Jiehao
Wang, Zhen
Peng, Fang
Zhang, Cheng
Xu, Bugong
Su, Hang
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-12-04
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Previous studies have shown that the motion intention recognition for lower limb prosthesis mainly focused on the identification of performed gait.
However, the bionic prosthesis needs to know the next movement at the beginning of a new gait, especially in complex operation environments.
In this paper, an upcoming locomotion prediction scheme via multilevel classifier fusion was proposed for the complex operation.
At first, two motion states, including steady state and transient state, were defined.
Steady-state recognition was backtracking of a completed gait, which would be used as prior knowledge of motion prediction.
In steady-state recognition, surface electromyographic (sEMG) and inertial sensors were fused to improve recognition accuracy; five typical locomotion modes were recognized by random forest classifier with over 97.8% accuracy.
The transient state was defined as an observation period at the initial stage of upcoming movement, in which only the sEMG signal was recorded due to the limitation of sliding window length.
LightGBM classifier was validated to outperform other methods in the accuracy and prediction time of transient-state recognition.
Finally, a simplified HMM model based on prior knowledge and observation result was constructed to predict upcoming locomotion.
The results indicated that the locomotion prediction was over 91% accuracy.
The proposed scheme implements the locomotion prediction at the initial stage of each gait and provides critical information for the gait control of lower limb prosthesis.
American Psychological Association (APA)
Peng, Fang& Zhang, Cheng& Xu, Bugong& Li, Jiehao& Wang, Zhen& Su, Hang. 2020. Locomotion Prediction for Lower Limb Prostheses in Complex Environments via sEMG and Inertial Sensors. Complexity،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1144566
Modern Language Association (MLA)
Peng, Fang…[et al.]. Locomotion Prediction for Lower Limb Prostheses in Complex Environments via sEMG and Inertial Sensors. Complexity No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1144566
American Medical Association (AMA)
Peng, Fang& Zhang, Cheng& Xu, Bugong& Li, Jiehao& Wang, Zhen& Su, Hang. Locomotion Prediction for Lower Limb Prostheses in Complex Environments via sEMG and Inertial Sensors. Complexity. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1144566
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1144566