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Adaptive cancelation of self-generated sensory signals in a whisking robot

Anderson, Sean R.; Pearson, Martin; Prescott, Tony J.; Pipe, Anthony; Dean, Paul; Porrill, John

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Authors

Sean R. Anderson

Tony J. Prescott

Paul Dean

John Porrill



Abstract

Sensory signals are often caused by ones own active movements. This raises a problem of discriminating between self-generated sensory signals and signals generated by the external world. Such discrimination is of general importance for robotic systems, where operational robustness is dependent on the correct interpretation of sensory signals. Here, we investigate this problem in the context of a whiskered robot. The whisker sensory signal comprises two components: one due to contact with an object (externally generated) and another due to active movement of the whisker (self-generated). We propose a solution to this discrimination problem based on adaptive noise cancelation, where the robot learns to predict the sensory consequences of its own movements using an adaptive filter. The filter inputs (copy of motor commands) are transformed by Laguerre functions instead of the often-used tapped-delay line, which reduces model order and, therefore, computational complexity. Results from a contact-detection task demonstrate that false positives are significantly reduced using the proposed scheme. © 2010 IEEE.

Citation

Anderson, S. R., Pearson, M., Pipe, A., Prescott, T. J., Dean, P., & Porrill, J. (2010). Adaptive cancelation of self-generated sensory signals in a whisking robot. IEEE Transactions on Robotics, 26(6), 1065-1076. https://doi.org/10.1109/TRO.2010.2069990

Journal Article Type Article
Publication Date Dec 1, 2010
Deposit Date Feb 20, 2013
Publicly Available Date Mar 28, 2024
Journal IEEE Transactions on Robotics
Print ISSN 1552-3098
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 26
Issue 6
Pages 1065-1076
DOI https://doi.org/10.1109/TRO.2010.2069990
Keywords learning and adaptive systems, neurorobotics,
force and tactile sensing, noise cancellation, laguerre functions
Public URL https://uwe-repository.worktribe.com/output/972879
Publisher URL http://dx.doi.org/10.1109/TRO.2010.2069990
Additional Information Additional Information : (c) 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

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