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Modular Continuum Manipulator: Analysis and Characterization of Its Basic Module.


ABSTRACT: We present the basic module of a modular continuum arm (soft compliant manipulator for broad applications (SIMBA)). SIMBA is a robotic arm with a hybrid structure, namely a combination of rigid and soft components, which makes the arm highly versatile, dexterous, and robust. These key features are due to the design of its basic module, which is characterized by a three-dimensional workspace with a constant radius around its rotation axis, large and highly repeatable bending, complete rotation, and passive stiffness. We present an extensive analysis and characterization of the basic module of the SIMBA arm in terms of design, fabrication, kinematic model, stiffness, and bending behavior. All the theoretical models presented were validated with empirical results. Our findings show a positional typical error of less than ?6% in module diameter (highly repeatable) with a passive stiffness of 0.8 N/mm (?1 kg load). Our aim is to demonstrate that this kind of robotic element can be exploited as an elementary module of a more complex structure, which can be used in any application requiring high directional stiffness but without the need for an active stiffness mechanism, as is the case in daily activities (e.g., door opening, water pouring, obstacle avoidance, and manipulation tasks).

SUBMITTER: Mishra AK 

PROVIDER: S-EPMC6352674 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Modular Continuum Manipulator: Analysis and Characterization of Its Basic Module.

Mishra Anand Kumar AK   Mondini Alessio A   Del Dottore Emanuela E   Sadeghi Ali A   Tramacere Francesca F   Mazzolai Barbara B  

Biomimetics (Basel, Switzerland) 20180214 1


We present the basic module of a modular continuum arm (soft compliant manipulator for broad applications (SIMBA)). SIMBA is a robotic arm with a hybrid structure, namely a combination of rigid and soft components, which makes the arm highly versatile, dexterous, and robust. These key features are due to the design of its basic module, which is characterized by a three-dimensional workspace with a constant radius around its rotation axis, large and highly repeatable bending, complete rotation, a  ...[more]

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