Underactuated Cable-Driven Parallel Robots (CDPR) employ a number of cables smaller than the degrees freedom (DoFs) end-effector (EE) that they control. As consequence, EE is underconstrained and preserves some freedoms even when all actuators are locked, which may lead to undesirable oscillations. This paper proposes methodology for computation natural oscillation frequencies, whose knowledge ...

This paper presents an initial work of identifying the dynamic parameters for cable-driven parallel robot (CDPR), CRAFT with a rigorous protocol. An orbital trajectory platform is designed in order to get pure translation movement platform. evolves plane and allows identification four parameters, mass first three moments along main axes. The results obtained respectively from data experimental ...

The level adjustment of cable-driven parallel mechanism is challenging due to the difficulty in obtaining an accurate mathematical model and the fact that different sources of uncertainties exist in the adjustment process. This paper presents application of an adaptive passivity-based control scheme for a cable suspended robot to handle disturbance and uncertainties in mass and moments of inert...

Known for their lower costs and numerous applications, cable robots are an attractive research field in robotic community. However, considering the fact that they require an accurate installation procedure and calibration routine, they have not yet found their true place in real-world applications. This paper aims to propose a new controller strategy that requires no meticulous calibration and ...

∗ Corresponding author, Phone: (716) 645-1430, Fax: (716) 645-3668, Email: [email protected]. ABSTRACT Cable-actuated parallel manipulators combine benefits of large workspaces, significant payload capacities and high stiffness by virtue of the cable actuation. However, redundant/surplus cables are required to overcome the unidirectional nature of forces exertable by cables. This leads to ...

Abstract This paper outlines an important step in characterizing a novel field of robotic construction research where cable-driven parallel robot is used to extrude cementitious material three-dimensional space, and thus offering comprehensive new approach computational design construction, fabrication at larger scales. Developed by the Faculty Art Design Bauhaus-University Weimar (Germany), fa...

Product oil tankers are essential transportation equipment for petroleum transfer. Due to products’ intense penetration and solubility, the quality requirements coating product high, regular maintenance is needed. Currently, this relies on manual labor, which involves working in enclosed spaces with harsh conditions, high labor intensity, long time periods, unstable quality. We proposed a light...

This paper deals with the kinetostatic model for a planar point mass cable-driven parallel manipulator when the cable elasticity and configuration have been fully taken into account. An exact model solution for the statics is obtained by consider elastic hefty cables. The proposed formulation allows considering specific behavior of cables for large dimensions cable-suspended robots in which the...