In this article, a manipulator is presented belonging to the class of cable-suspended robots, for which the cable length variations are related by suitable functions in order to achieve specific kinematic characteristics. In particular, in this article, a Cartesian cable-suspended robot is proposed that has eight cables to have three degrees of freedom (DOF) in Cartesian space. The eight cables of the robot are arranged in parallel by pairs with identical length, with the aim of constraining the moving platform to keep a constant orientation with respect to the fixed frame. The robot can be used for selective compliant assembly robot arm (SCARA) motions (when an additional revolute actuated joint is placed on the moving platform) for a variety of applications in which a large workspace is required. In this article, a geometry analysis of the robot is presented together with a numerical simulation of the kinetostatics and dynamics to investigate the robot's performances in several operative conditions. Furthermore, a characterization of the position workspace regions is reported for this cable-suspended robot.
VerhoevenR., Analysis of the workspace of tendon-based Stewart platforms (2004): PhD Thesis, University of Duisburg-Essen.
3.
WischnitzerY.ShvalbN.ShohamM., ‘Wire-driven parallel robot: Permitting collisions between wires’Int. J. Robot. Res.279 (2008): 1007–1026.
4.
BruckmannT.MikelsonsL.BrandtT.HillerM.SchrammD., ‘Wire robots part I. Kinematics, analysis and design’In Parallel manipulators, new developmentsRyuJ.-H. Eds. (2008): 109–132 (I-Tech Education and Publishing, Vienna, Austria).
5.
RiechelA.Ebert-UphoffI., ‘Wrench-based analysis of cable-driven robots’ In Proceedings of IEEE Inter-national Conference on Robotics and automation, New Orleans, 2004, pp. 4950–4955.
6.
BarretteG.GosselinC. M., ‘Determination of the dynamic workspace of cable-driven planar parallel mechanisms’ASME J. Mech. Des.1272 (2005): 242–248.
DiaoX.MaO., ‘A method of verifying force-closure condition for general cable manipulators with seven cables’Mech. Mach. Theory42 (2007): 1563–1576.
9.
LafourcadeP.LlibreM., ‘Design of a parallel wire-driven manipulator for wind tunnels’ In Proceedings of Workshop on Fundamental issues and future research directions for parallel mechanisms and manipulators, Quebec City, 2002, pp. 46–56.
10.
KawamuraS.KinoH.WonC., ‘High-speed manipulation by using parallel wire-driven robots’Robotica181 (2000): 13–21.
11.
JeongJ. W.KimS. H.KwakY. K., ‘Kinematics and workspace analysis of a parallel wire mechanism for measuring a robot pose’Mech. Mach. Theory346 (1999): 825–841.
OttavianoE.CeccarelliM.TotiM.Avila CarrascoC., ‘CaTraSys (Cassino Traking System): A wire system for experimental evaluation of robot workspace’J. Robot. Mechatronics141 (2002): 78–87.
14.
AlpA. B.AgrawalS. K., ‘Cable suspended robots: Design, planning, and control’ In Proceedings of 2002 IEEE International Conference on Robotics and automation, Washington, 2002, pp. 4275–4280.
15.
BarretteG.GosselinC. M., ‘Kinematic analysis and design of planar parallel mechanisms actuated with cables’ In Proceedings of 2000 ASME Design Engineering Technical Conference, 2000, DETC/MECH-14091.
16.
FattahA.AgrawalS. K., ‘Workspace and design analysis of cable-suspended planar parallel robots’ In Proceedings of 2002 ASME Design Engineering Technical Conference, 27th Biennial Mechanisms and Robotics Conference, 2002, DETC2002/MECH-34330.
TadokoroS.VerhoevenR.HillerM.TakamoriT., ‘A Portable parallel manipulator for search and rescue at large-scale urban earthquakes and an identification algorithm for the installation in unstructured environments’ In Proceedings of the IEEE/RSJ IROS International Conference on Intelligent robots and systems, St Louis, USA, 1999, pp. 1222–1227.
20.
PuseyJ.FattahA.AgrawalS.MessinaE., ‘Design and workspace analysis of a 6-6 cable-suspended parallel robot’Mech. Mach. Theory39 (2004): 761–778.
21.
OttavianoE.CastelliG.CannellaG., ‘A cable-based system for aiding elderly people in sit-to-stand transfer’Mech. Based Des. Struct. Mach.364 (2008): 310–329.
22.
CastelliG.OttavianoE., ‘Modelling and simulation of a cable-based parallel manipulator as an assisting device’ In Proceedings of the 11th International Symposium on Advances in robot kinematics, 2009, pp. 17–24 (Springer, Duisburg).
23.
YamamotoM.NoritakaY.AkiraM., ‘Trajectory control of incompletely restrained parallel-wire-suspended mechanism based on inverse dynamics’IEEE Trans. Robot.205 (2004): 840–850.
KrutS.RamdaniN.GouttefardeM.CompanyO.PierrotF., ‘A parallel cable-driven crane for SCARA-motions’ (2008) Paper DETC2008-49969.
26.
DekkerR.KhajepourA.BehzadipourS., ‘Design and testing of an ultra-high-speed cable robot’Int. J. Robot. Autom.211 (2006): 25–34.
27.
VoglewedeP. A.Ebert-UphoffI., ‘Application of the antipodal grasp theorem to cable driven robots’IEEE Trans. Robot.214 (2005): 713–718.
28.
ClavelR., ‘Delta: A fast robot with parallel geometry’ (1988) (IFS Publications, Lausanne).
29.
CastelliG.OttavianoE.ReaP., Macchina automatica cartesiana CCSR (Cartesian Cable-Suspended Robot) basata su sistema a cavi per la movimentazione di carichi (2009): Italian patent no. FR2009A000025, 2 November.
