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Learning to Detect Collisions for Continuum Manipulators Without a Prior Model

  • Shahriar SefatiEmail author
  • Shahin Sefati
  • Iulian Iordachita
  • Russell H. Taylor
  • Mehran Armand
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11768)

Abstract

Due to their flexibility, dexterity, and compact size, Continuum Manipulators (CMs) can enhance minimally invasive interventions. In these procedures, the CM may be operated in proximity of sensitive organs; therefore, requiring accurate and appropriate feedback when colliding with their surroundings. Conventional CM collision detection algorithms rely on a combination of exact CM constrained kinematics model, geometrical assumptions such as constant curvature behavior, a priori knowledge of the environmental constraint geometry, and/or additional sensors to scan the environment or sense contacts. In this paper, we propose a data-driven machine learning approach using only the available sensory information, without requiring any prior geometrical assumptions, model of the CM or the surrounding environment. The proposed algorithm is implemented and evaluated on a non-constant curvature CM, equipped with Fiber Bragg Grating (FBG) optical sensors for shape sensing purposes. Results demonstrate successful detection of collisions in constrained environments with soft and hard obstacles with unknown stiffness and location.

Keywords

Collision detection Continuum Manipulator Minimal invasive surgery Machine learning 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Shahriar Sefati
    • 1
    Email author
  • Shahin Sefati
    • 2
  • Iulian Iordachita
    • 1
  • Russell H. Taylor
    • 1
  • Mehran Armand
    • 1
    • 3
  1. 1.Laboratory for Computational Sensing and RoboticsJohns Hopkins UniversityBaltimoreUSA
  2. 2.Comcast Applied AI ResearchComcastWashington D.C.USA
  3. 3.Johns Hopkins University Applied Physics LaboratoryLaurelUSA

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