Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking
To develop sophisticated and efficient control strategies for exoskeleton devices, acquiring the information of interaction forces between the wearer and the wearable device is essential. However, obtaining the interaction force via conventional methods, such as direct measurement using force sensor...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Biomimetic Intelligence and Robotics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667379722000213 |
| _version_ | 1811180892634218496 |
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| author | Muye Pang Zihan Luo Biwei Tang Jing Luo Kui Xiang |
| author_facet | Muye Pang Zihan Luo Biwei Tang Jing Luo Kui Xiang |
| author_sort | Muye Pang |
| collection | DOAJ |
| description | To develop sophisticated and efficient control strategies for exoskeleton devices, acquiring the information of interaction forces between the wearer and the wearable device is essential. However, obtaining the interaction force via conventional methods, such as direct measurement using force sensors, is problematic. This paper proposes a kinematic data-based estimation method to evaluate the interaction force between human lower limbs and passive exoskeleton links during level ground walking. Unlike conventional methods, the proposed method requires no force sensors and is computationally cheaper to obtain the calculation results. To obtain more accurate kinematic data, a marker refinement algorithm based on bilevel optimization framework is adopted. The interaction force is evaluated by a spring model, which is used to imitate the binding behavior between human limbs and the exoskeleton links. The deflection of the spring model is calculated based on the assumption that the phase delay between human limb and exoskeleton link can be presented by the sequence of frames of kinematic data. Experimental results of six subjects indicate that our proposed method can estimate the interaction forces during level ground walking. Moreover, a case study of bandage location optimization is conducted to demonstrate the usefulness of obtaining the interaction information. |
| first_indexed | 2024-04-11T09:09:18Z |
| format | Article |
| id | doaj.art-59bca10378094399aea3e2d54779231b |
| institution | Directory Open Access Journal |
| issn | 2667-3797 |
| language | English |
| last_indexed | 2024-04-11T09:09:18Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biomimetic Intelligence and Robotics |
| spelling | doaj.art-59bca10378094399aea3e2d54779231b2022-12-22T04:32:32ZengElsevierBiomimetic Intelligence and Robotics2667-37972022-09-0123100056Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walkingMuye Pang0Zihan Luo1Biwei Tang2Jing Luo3Kui Xiang4School of Automation, Intelligent System Research Institute, Wuhan University of Technology, Wuhan, ChinaSchool of Automation, Intelligent System Research Institute, Wuhan University of Technology, Wuhan, ChinaSchool of Automation, Intelligent System Research Institute, Wuhan University of Technology, Wuhan, ChinaSchool of Automation, Intelligent System Research Institute, Wuhan University of Technology, Wuhan, ChinaCorresponding author.; School of Automation, Intelligent System Research Institute, Wuhan University of Technology, Wuhan, ChinaTo develop sophisticated and efficient control strategies for exoskeleton devices, acquiring the information of interaction forces between the wearer and the wearable device is essential. However, obtaining the interaction force via conventional methods, such as direct measurement using force sensors, is problematic. This paper proposes a kinematic data-based estimation method to evaluate the interaction force between human lower limbs and passive exoskeleton links during level ground walking. Unlike conventional methods, the proposed method requires no force sensors and is computationally cheaper to obtain the calculation results. To obtain more accurate kinematic data, a marker refinement algorithm based on bilevel optimization framework is adopted. The interaction force is evaluated by a spring model, which is used to imitate the binding behavior between human limbs and the exoskeleton links. The deflection of the spring model is calculated based on the assumption that the phase delay between human limb and exoskeleton link can be presented by the sequence of frames of kinematic data. Experimental results of six subjects indicate that our proposed method can estimate the interaction forces during level ground walking. Moreover, a case study of bandage location optimization is conducted to demonstrate the usefulness of obtaining the interaction information.http://www.sciencedirect.com/science/article/pii/S2667379722000213Interaction force estimationPassive lower limb exoskeletonLevel ground walkingBilevel optimization |
| spellingShingle | Muye Pang Zihan Luo Biwei Tang Jing Luo Kui Xiang Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking Biomimetic Intelligence and Robotics Interaction force estimation Passive lower limb exoskeleton Level ground walking Bilevel optimization |
| title | Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| title_full | Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| title_fullStr | Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| title_full_unstemmed | Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| title_short | Estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| title_sort | estimation of the interaction force between human and passive lower limb exoskeleton device during level ground walking |
| topic | Interaction force estimation Passive lower limb exoskeleton Level ground walking Bilevel optimization |
| url | http://www.sciencedirect.com/science/article/pii/S2667379722000213 |
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