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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ding Wang Lin Du He Huang |
| Copyright Year | 2013 |
| Description | Author affiliation: Dept. of Electr., Comput., & Biomed. Eng., Univ. of Rhode Island, Kingston, RI, USA (Ding Wang; Lin Du; He Huang) |
| Abstract | Neural-machine interface (NMI) for artificial limbs is a typical biomedical CPS that requires seamless integration of cyber components with physical systems (i.e. prostheses and users). In this paper we aimed to adopt a bio-inspired concept to improve the performance of a NMI for artificial legs by introducing additional information about the walking environment ahead of the prosthesis user. First, a terrain recognition module based on a portable laser distance sensor and an inertial measurement unit (IMU) was designed to accurately classify the terrain type in front of the prosthesis user. The output of this module was then modeled as prior probability and integrated into a Bayesian-based NMI system. The cyber algorithms were real-time implemented and evaluated on an able-bodied subject wearing a passive prosthetic leg in the laboratory environment. The preliminary results showed that the terrain recognition module can accurately recognize the type of terrain in front of the user, approximately half to one second before the critical timing for prosthesis control mode change. NMI with or without the terrain recognition module accurately predicted all the tested task mode transitions. However, the NMI with the terrain recognition module yielded approximately 5% higher classification accuracy rate in static state and 30~105 ms earlier prediction of mode transitions than the NMI without prior knowledge of environmental information. The preliminary results demonstrated the soundness of the bio-inspired concept and established CPS framework to further enhance the accuracy and response time of NMI for artificial leg control. |
| Starting Page | 87 |
| Ending Page | 91 |
| File Size | 3933750 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781467352871 |
| e-ISBN | 9781467352888 |
| e-ISBN | 9781467352864 |
| DOI | 10.1109/ICCNC.2013.6504059 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-01-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Legged locomotion Measurement by laser beam Real-time systems Electromyography Timing Laser beams Prosthetics |
| Content Type | Text |
| Resource Type | Article |
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