An integrated decision making approach for adaptive shared control of mobility assistance robots
Mobility assistance robots provide support to elderly or patients during walking. The design of a safe and intuitive assistance behavior is one of the major challenges in this context. We present an integrated approach for the context-specific, on-line adaptation of the assistance level of a rollato...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
3 June 2016
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| In: |
International Journal of Social Robotics
Year: 2016, Volume: 8, Issue: 5, Pages: 631-648 |
| ISSN: | 1875-4805 |
| DOI: | 10.1007/s12369-016-0353-z |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/s12369-016-0353-z
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| Author Notes: | Milad Geravand, Christian Werner, Klaus Hauer, Angelika Peer |
| Summary: | Mobility assistance robots provide support to elderly or patients during walking. The design of a safe and intuitive assistance behavior is one of the major challenges in this context. We present an integrated approach for the context-specific, on-line adaptation of the assistance level of a rollator-type mobility assistance robot by gain-scheduling of low-level robot control parameters. A human-inspired decision-making model, the drift-diffusion Model, is introduced as the key principle to gain-schedule parameters and with this to adapt the provided robot assistance in order to achieve a human-like assistive behavior. The mobility assistance robot is designed to provide (a) cognitive assistance to help the user following a desired path towards a predefined destination as well as (b) sensorial assistance to avoid collisions with obstacles while allowing for an intentional approach of them. Further, the robot observes the user long-term performance and fatigue to adapt the overall level of (c) physical assistance provided. For each type of assistance a decision-making problem is formulated that affects different low-level control parameters. The effectiveness of the proposed approach is demonstrated in technical validation experiments. Moreover, the proposed approach is evaluated in a user study with 35 elderly persons. Obtained results indicate that the proposed gain-scheduling technique incorporating ideas of human decision-making models shows a general high potential for the application in adaptive shared control of mobility assistance robots. |
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| Item Description: | Gesehen am 03.06.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1875-4805 |
| DOI: | 10.1007/s12369-016-0353-z |