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    Using tactile-exploration with the unscented kalman filter for high precision on-line shape and pose estimation of a 3D workpiece

    Access Status
    Fulltext not available
    Authors
    Monteath, I.
    Sheh, Raymond
    Fick, D.
    Khan, R.
    Robertson, B.
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Monteath, I. and Sheh, R. and Fick, D. and Khan, R. and Robertson, B. 2015. Using tactile-exploration with the unscented kalman filter for high precision on-line shape and pose estimation of a 3D workpiece.
    Source Title
    Australasian Conference on Robotics and Automation, ACRA
    ISSN
    1448-2053
    School
    Department of Computing
    URI
    http://hdl.handle.net/20.500.11937/55198
    Collection
    • Curtin Research Publications
    Abstract

    A common problem faced in robotic manipulation is developing techniques for accurate lo- calisation and mapping of 3D objects. Many techniques already exist to aid in estimating the structure of the world using information from a robot's sensors such as stereo cameras, time-of-ight or structured light. These sensors and techniques used for modelling can of-Ten be made accurate enough for most practical applications (such as picking-up an object). However, some applications require a higher degree of accuracy (sub-millimeter) that is difficult to achieve with the information available from these sensors. This paper proposes the use of tactile exploration to incrementally i prove the accuracy of a prior 3D object model as the robot touches different parts of a work- piece. A modified Unscented Kalman Filter (UKF) has been developed to fuse the touch probe data with the existing model and refine it over time. The approach presented in this paper is intended for applications that require a high degree of accuracy and reliability (such as medical procedures) and as such, focuses on three primary requirements|accuracy, robustness and practicality.

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