TY - GEN
T1 - Temporal Analysis Method of Lower Limb Muscle Activation Based on OpenSim
AU - Li, Xiangyu
AU - Chen, Jing
AU - Li, Xueyuan
AU - Yu, Zhiyuan
AU - Liu, Hao
AU - Li, Shuang
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
PY - 2024
Y1 - 2024
N2 - The optimized control of knee exoskeletons based on elec tromyographic signals requires the explicit definition of specific muscle characteristics as objective functions. However, there are certain differ ences in leg muscle activation under different conditions. This paper pro poses a method for analyzing the temporal activation of lower limb mus cles based on OpenSim, studying the activation timing of lower limb mus cles during the gait cycle under different conditions. Multiple conditions were set up in experiments, and human kinematic, kinetic data, includ ing electromyographic data were collected. Using the raw kinematic and kinetic data, a human motion model under multiple conditions was con structed, and the accuracy of the model simulation results was verified using electromyographic data. Analysis of the simulation results reveals that during uphill walking, the biceps femoris, gastrocnemius medial and lateral heads, and gluteus maximus are primarily involved, while during downhill walking, the rectus femoris, vastus medialis, and vastus lateralis are primarily involved. In addition, significant involvement of the soleus muscle in all conditions is also noticed. The simulation results prelimi narily provide the timing and activation level of muscle activation under different conditions. Based on this characteristic, corresponding muscles can be determined as optimization targets, providing guidance for defining objective functions in exoskeleton optimized control.
AB - The optimized control of knee exoskeletons based on elec tromyographic signals requires the explicit definition of specific muscle characteristics as objective functions. However, there are certain differ ences in leg muscle activation under different conditions. This paper pro poses a method for analyzing the temporal activation of lower limb mus cles based on OpenSim, studying the activation timing of lower limb mus cles during the gait cycle under different conditions. Multiple conditions were set up in experiments, and human kinematic, kinetic data, includ ing electromyographic data were collected. Using the raw kinematic and kinetic data, a human motion model under multiple conditions was con structed, and the accuracy of the model simulation results was verified using electromyographic data. Analysis of the simulation results reveals that during uphill walking, the biceps femoris, gastrocnemius medial and lateral heads, and gluteus maximus are primarily involved, while during downhill walking, the rectus femoris, vastus medialis, and vastus lateralis are primarily involved. In addition, significant involvement of the soleus muscle in all conditions is also noticed. The simulation results prelimi narily provide the timing and activation level of muscle activation under different conditions. Based on this characteristic, corresponding muscles can be determined as optimization targets, providing guidance for defining objective functions in exoskeleton optimized control.
KW - Gait analysis
KW - Muscle activation
KW - Musculoskeletal model
KW - OpenSim
UR - http://www.scopus.com/inward/record.url?scp=105000283557&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-8650-3_57
DO - 10.1007/978-981-97-8650-3_57
M3 - Conference contribution
AN - SCOPUS:105000283557
SN - 9789819786497
T3 - Lecture Notes in Electrical Engineering
SP - 556
EP - 568
BT - Proceedings of 2024 Chinese Intelligent Systems Conference
A2 - Jia, Yingmin
A2 - Fu, Yongling
A2 - Zhang, Weicun
A2 - Yang, Yang
PB - Springer Science and Business Media Deutschland GmbH
T2 - 20th Chinese Intelligent Systems Conference, CISC 2024
Y2 - 26 October 2024 through 27 October 2024
ER -