The flexibility and dexterity of continuum manipulators in comparison with rigid-link counterparts have become main features behind their recent popularity. Despite of that, the problem of navigation and motion planning for continuum manipulators turns out to be demanding tasks due to the complexity of their flexible structure modelling which in turns complicates the pose estimation. In this paper, we present a real-time obstacle avoidance algorithm for tendondriven continuum-style manipulator in dynamic environments. The algorithm is equipped with a non-linear observer based on an Extended Kalman Filter to estimate the pose of every point along the manipulator’s body. A local observability analysis for the kinematic model of the manipulator is also presented. The overall algorithm works well for a model of a single-segment continuum manipulator in a real-time simulation environment with moving obstacles in the workspace of manipulators, able to avoid the whole body of manipulators from collision.


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    Title :

    Towards Safer Obstacle Avoidance for Continuum-Style Manipulator in Dynamic Environments


    Contributors:
    Ataka, A (author) / Qi, P (author) / Shiva, A (author) / Shafti, A (author) / Wurdemann, HA (author) / Althoefer, K (author)

    Publication date :

    2016-06-29


    Remarks:

    In: Proceedings of the 6th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics (BioRob 2016). (pp. pp. 600-605). IEEE: Singapore. (2016)


    Type of media :

    Paper


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629



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