Abstract
Cable-Driven Parallel Robots (CDPRs) are special manipulators where rigid links are replaced with cables. The use of cables offers several advantages over the conventional rigid manipulators, one of the most interesting being their ability to cover large workspaces since cables are easily winded. However, this workspace coverage has its limitations due to the maximum permissible cable tensions, i.e., tension limitations cause a decrease in the Wrench Feasible Workspace (WFW) of these robots. To solve this issue, a novel design based in the addition of passive carriages to the robot frame of three degrees-of-freedom (3DOF) fully-constrained CDPRs is used. The novelty of the design allows reducing the variation in the cable directions and forces increasing the robot WFW; nevertheless, it presents a low stiffness along the x direction. This paper presents the dynamic model of the novel proposal together with a new dynamic control technique, which rejects the vibrations caused by the stiffness loss while ensuring an accurate trajectory tracking. The simulation results show that the controlled system presents a larger WFW than the conventional scheme of the CDPR, maintaining a good performance in the trajectory tracking of the end-effector. The novel proposal presented here can be applied in multiple planar applications.
Funder
University of Castilla-La Mancha, Spain
regional government Junta de Comunidades de Castilla La Mancha
Subject
Control and Optimization,Control and Systems Engineering
Reference52 articles.
1. Merlet, J.P. (2005). Parallel Robots, Springer Science & Business Media.
2. Bosscher, P., Williams, R.L., and Tummino, M. (2005, January 24–28). A concept for rapidly-deployable cable robot search and rescue systems. Proceedings of the International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, Long Beach, CA, USA.
3. Tadokoro, S., Verhoeven, R., Hiller, M., and Takamori, T. (1999, January 17–21). A portable parallel manipulator for search and rescue at large-scale urban earthquakes and an identification algorithm for the installation in unstructured environments. Proceedings of the 1999 IEEE/RSJ International Conference on Intelligent Robots and Systems, Human and Environment Friendly Robots with High Intelligence and Emotional Quotients (Cat. No. 99CH36289), Kyongju, Republic of Korea.
4. Ottaviano, E., Ceccarelli, M., and De Ciantis, M. (2007, January 27–29). A 4–4 cable-based parallel manipulator for an application in hospital environment. Proceedings of the 2007 Mediterranean Conference on Control & Automation, Athens, Greece.
5. Manipulability of a planar wire driven haptic device;Gallina;Mech. Mach. Theory,2002
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