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Design of Reconfigurable Cable-Driven Parallel Robots

Abstract : This chapter is dedicated to the design of Reconfigurable Cable-Driven Parallel Robots (RCDPRs) where the locations of the cable exit points on the base frame can be selected from a finite set of possible values. A task-based design strategy for discrete RCDPRs is formulated. By taking into account the working environment , the designer divides the prescribed workspace or trajectory into parts. Each part shall be covered by one configuration of the RCDPR. Placing the cable exit points on a grid of possible locations, numerous CDPR configurations can be generated. All the possible configurations are analysed with respect to a set of constraints in order to determine the parts of the prescribed workspace or trajectory that can be covered. The considered constraints account for cable interferences, cable collisions , and wrench feasibility. The configurations satisfying the constraints are then compared in order to find the combinations of configurations that accomplish the required task while optimising one or several objective function(s). A case study comprising the design of a RCDPR for sandblasting and painting of a three-dimensional tubular structure is finally presented. Cable exit points are reconfigured, switching from one side of the tubular structure to another, until three external sides of the structure are covered. The optimisation includes the minimisation of the number of cable attachment/detachment operations required to switch from one configuration to another one, minimisation of the size of the RCDPR, and the maximisation of the RCDPR stiffness.
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Contributor : Stéphane Caro <>
Submitted on : Wednesday, April 4, 2018 - 11:34:46 AM
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Lorenzo Gagliardini, Marc Gouttefarde, Stéphane Caro. Design of Reconfigurable Cable-Driven Parallel Robots. E Ottaviano; A Pelliccio; V Gattulli. Mechatronics for Cultural Heritage and Civil Engineering, 92 (92), pp.85-113, 2018, 978-3-319-68646-2. ⟨10.1007/978-3-319-68646-2_4⟩. ⟨hal-01758141⟩



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