Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces
A Human-Prosthetic Interface (HPI) serves to estimate and realise the limb pose intended by the human user, using the information obtained from sensors worn by the user. In recent studies, the HPI maps multi-joint limb poses (i.e. coordinated movement of the body and limbs) to the inputs of multiple...
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IEEE
2023-01-01
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| Series: | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
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| Online Access: | https://ieeexplore.ieee.org/document/10073539/ |
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| author | Tianshi Yu Alireza Mohammadi Ying Tan Peter Choong Denny Oetomo |
| author_facet | Tianshi Yu Alireza Mohammadi Ying Tan Peter Choong Denny Oetomo |
| author_sort | Tianshi Yu |
| collection | DOAJ |
| description | A Human-Prosthetic Interface (HPI) serves to estimate and realise the limb pose intended by the human user, using the information obtained from sensors worn by the user. In recent studies, the HPI maps multi-joint limb poses (i.e. coordinated movement of the body and limbs) to the inputs of multiple sensors. This is in contrast to the conventional methods where each degree of freedom of the powered prosthesis is mapped to the input of one/a pair of sensors. In this approach, it is necessary to systematically select sensors that carry the most information for the intended set of poses, to improve system accuracy and/or minimise the number of sensors, thus the complexity, in the prosthetic system. In this paper, sensor selection process is systematically formulated to maximise the information contained in the input features for a given number of sensors. Most importantly, it accounts for composite features, which are features requiring information from multiple sensors. Such composite features exist and are important in HPIs as we seek to capture coordinated motion involving movements of multiple limb and body segments. A non-convex optimisation problem is formulated which accounts for the constraint introduced by the composite features. A projection matrix is utilised as the optimisation variable to select intended features for evaluation. The problem is solved by the proposed Sensor Selection with Composite Features (SS-CF) algorithm which adapts convex-relaxation techniques. The SS-CF is benchmarked against HPI with expert-selected sensors in the literature and against a greedy heuristic method. The outcome demonstrated the efficacy of the SS-CF algorithm. |
| format | Article |
| id | doaj-art-3e26e708d186440c964634ee167a42e6 |
| institution | DOAJ |
| issn | 1534-4320 1558-0210 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IEEE |
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| series | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
| spelling | doaj-art-3e26e708d186440c964634ee167a42e62025-08-20T03:07:47ZengIEEEIEEE Transactions on Neural Systems and Rehabilitation Engineering1534-43201558-02102023-01-01311732174210.1109/TNSRE.2023.325822510073539Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic InterfacesTianshi Yu0https://orcid.org/0000-0002-3345-3028Alireza Mohammadi1https://orcid.org/0000-0002-5561-1322Ying Tan2https://orcid.org/0000-0001-8495-0246Peter Choong3https://orcid.org/0000-0002-3522-7374Denny Oetomo4https://orcid.org/0000-0002-2680-6489Department of Mechanical Engineering, University of Melbourne, Parkville, VIC, AustraliaDepartment of Mechanical Engineering, University of Melbourne, Parkville, VIC, AustraliaDepartment of Mechanical Engineering, University of Melbourne, Parkville, VIC, AustraliaDepartment of Surgery, St. Vincent’s Hospital Melbourne, University of Melbourne, Fitzroy, VIC, AustraliaDepartment of Mechanical Engineering, University of Melbourne, Parkville, VIC, AustraliaA Human-Prosthetic Interface (HPI) serves to estimate and realise the limb pose intended by the human user, using the information obtained from sensors worn by the user. In recent studies, the HPI maps multi-joint limb poses (i.e. coordinated movement of the body and limbs) to the inputs of multiple sensors. This is in contrast to the conventional methods where each degree of freedom of the powered prosthesis is mapped to the input of one/a pair of sensors. In this approach, it is necessary to systematically select sensors that carry the most information for the intended set of poses, to improve system accuracy and/or minimise the number of sensors, thus the complexity, in the prosthetic system. In this paper, sensor selection process is systematically formulated to maximise the information contained in the input features for a given number of sensors. Most importantly, it accounts for composite features, which are features requiring information from multiple sensors. Such composite features exist and are important in HPIs as we seek to capture coordinated motion involving movements of multiple limb and body segments. A non-convex optimisation problem is formulated which accounts for the constraint introduced by the composite features. A projection matrix is utilised as the optimisation variable to select intended features for evaluation. The problem is solved by the proposed Sensor Selection with Composite Features (SS-CF) algorithm which adapts convex-relaxation techniques. The SS-CF is benchmarked against HPI with expert-selected sensors in the literature and against a greedy heuristic method. The outcome demonstrated the efficacy of the SS-CF algorithm.https://ieeexplore.ieee.org/document/10073539/Sensor selectionprostheticssparsity constraint optimisation |
| spellingShingle | Tianshi Yu Alireza Mohammadi Ying Tan Peter Choong Denny Oetomo Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces IEEE Transactions on Neural Systems and Rehabilitation Engineering Sensor selection prosthetics sparsity constraint optimisation |
| title | Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces |
| title_full | Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces |
| title_fullStr | Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces |
| title_full_unstemmed | Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces |
| title_short | Sensor Selection With Composite Features in Identifying User-Intended Poses for Human-Prosthetic Interfaces |
| title_sort | sensor selection with composite features in identifying user intended poses for human prosthetic interfaces |
| topic | Sensor selection prosthetics sparsity constraint optimisation |
| url | https://ieeexplore.ieee.org/document/10073539/ |
| work_keys_str_mv | AT tianshiyu sensorselectionwithcompositefeaturesinidentifyinguserintendedposesforhumanprostheticinterfaces AT alirezamohammadi sensorselectionwithcompositefeaturesinidentifyinguserintendedposesforhumanprostheticinterfaces AT yingtan sensorselectionwithcompositefeaturesinidentifyinguserintendedposesforhumanprostheticinterfaces AT peterchoong sensorselectionwithcompositefeaturesinidentifyinguserintendedposesforhumanprostheticinterfaces AT dennyoetomo sensorselectionwithcompositefeaturesinidentifyinguserintendedposesforhumanprostheticinterfaces |