Cartesian parallel manipulators
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Cartesian parallel manipulators move a platform using parallel connected kinematic linkages (limbs) lined up with a Cartesian coordinate system[1]. Multiple limbs connect the moving platform to a base. Each limb is driven by a linear actuator and the linear actuators are mutually perpendicular. By contrast, cartesian manipulators typically consist of a single serial connected kinematic linkage of mutually perpendicular linear actuators. The term `parallel' here refers to the way that the kinematic linkages are put together, it does not connote geometric parallelism, i.e. equidistant lines.
Attributes
Cartesian parallel manipulators benefit from the favorable attributes of both cartesian and parallel manipulators. Cartesian manipulators have a simple intuitive layout that makes them easy to control. They generally have a one-to-one correspondence between the linear positions of the actuators and the X, Y, Z position coordinates of the moving platform. Compared to serial manipulators, the synergy of the cooperating limbs of parallel manipulators, working together to support the moving-platform, give them inherent advantages in terms of stiffness, precision, dynamic performance and supporting heavy loads.
Configurations
Various types of cartesian parallel manipulators are summarized here. Only fully parallel mechanisms are included, i.e. those having the same number of limbs as degrees of freedom of the moving-platform, with a single actuator per limb.
Multipteron family
Members of the Multipteron [2] family of manipulators have either 3, 4, 5 or 6 degrees of freedom (DoF). The Tripteron 3-DoF member has three translation 3T degrees of freedom, with the subsequent members each adding a rotational R degrees of freedom. They all have mutually perpendicular linear actuators connected to a fixed base. The moving platform is typically attached to the linear actuators through three parallel revolute R joints.
Tripteron 3T
The Tripteron[3] [4] [5] [6] 3-DoF member of this family has three parallel-connected kinematic chains consisting of the linear actuator (prismatic P joint) in series with three revolute R joints 3(PRRR), or equivalently 3(CRR). Similar manipulators with three parallelogram Pa limbs 3(PRPaR) are the orthoglide[7] [8] and parallel cube-manipulator[9].
Qudrupteron 3T1R
under construction
Pentapteron 3T12R
under construction
Hexapteron 3T3R
under construction
Other guy isoglide?
under construction
Coupled cartesian manipulator
under construction
References
- ^ Perler, Dominik (2020), "Descartes, René: Discours de la méthode pour bien conduire sa raison et chercher la vérité dans les sciences", Kindlers Literatur Lexikon (KLL), Stuttgart: J.B. Metzler, pp. 1–3, ISBN 978-3-476-05728-0, retrieved 2020-12-14
- ^ Gosselin, Clement M.; Masouleh, Mehdi Tale; Duchaine, Vincent; Richard, Pierre-Luc; Foucault, Simon; Kong, Xianwen. "Parallel Mechanisms of the Multipteron Family: Kinematic Architectures and Benchmarking". Proceedings 2007 IEEE International Conference on Robotics and Automation. IEEE. doi:10.1109/robot.2007.363045. ISBN 1-4244-0602-1.
- ^ Gosselin, C. M., and Kong, X., 2004, “Cartesian Parallel Manipulators,” U.S. Patent No. 6,729,202
- ^ Xianwen Kong, Clément M. Gosselin, Kinematics and Singularity Analysis of a Novel Type of 3-CRR 3-DOF Translational Parallel Manipulator, The International Journal of Robotics Research Vol. 21, No. 9, September 2002, pp. 791-7
- ^ Kong, Xianwen; Gosselin, Clément M. (2002), "Type Synthesis of Linear Translational Parallel Manipulators", Advances in Robot Kinematics, Dordrecht: Springer Netherlands, pp. 453–462, ISBN 978-90-481-6054-9, retrieved 2020-12-14
- ^ Kim, Han Sung; Tsai, Lung-Wen (2002), "Evaluation of a Cartesian Parallel Manipulator", Advances in Robot Kinematics, Dordrecht: Springer Netherlands, pp. 21–28, ISBN 978-90-481-6054-9, retrieved 2020-12-14
- ^ Wenger, P.; Chablat, D. (2000), "Kinematic Analysis of a New Parallel Machine Tool: The Orthoglide", Advances in Robot Kinematics, Dordrecht: Springer Netherlands, pp. 305–314, ISBN 978-94-010-5803-2, retrieved 2020-12-14
- ^ Chablat, D.; Wenger, P. (June 2003). "Architecture optimization of a 3-DOF translational parallel mechanism for machining applications, the orthoglide". IEEE Transactions on Robotics and Automation. 19 (3): 403–410. doi:10.1109/tra.2003.810242. ISSN 1042-296X.
- ^ Liu, Xin-Jun; Jeong, Jay il; Kim, Jongwon (2003-10-24). "A three translational DoFs parallel cube-manipulator". Robotica. 21 (6): 645–653. doi:10.1017/s0263574703005198. ISSN 0263-5747.