Abstract
The 6-P US parallel manipulator can be used as a good alternative for the 6-UP S manipulator, known as Stewart platform. 6-P US parallel robots may be designed and manufactured in various architectures with different attributes. In this paper, to assess all the possible architectures of the 6-P US with respect to both workspace and dynamic performance, a general geometry is first defined. Using Newton-Euler method, the dynamic model of the general 6-P US robot is derived and its closed-form dynamic equations are presented. More accurate formulation is obtained by considering all robot’s component inertia as well as including the angular velocity and acceleration vectors of the robot’s legs. Moreover, the effect of neglecting link inertia of the 6-P US robot is studied for different payload to link mass ratios. The closed-form model includes dynamic matrices of the robot which can conveniently be used for model based control techniques. Two trajectories are considered and the derived dynamic formulation is verified using a commercial multibody dynamics software. Finally, four case studies covering the well-known architectures of the 6-P US manipulator, including the Hexaglide and the HexaM, are compared based on the robot workspace and forces of the actuators. The results indicates that amongst the studied designs of the 6-P US robot, the architecture with rails leaning outside provides the best performance and therefore can be considered as a competitor for the conventional Stewart platforms.
Similar content being viewed by others
References
Dasgupta, B., Mruthyunjaya, T.: Closed-form dynamic equations of the general Stewart platform through the Newton–Euler approach. Mech. Mach. Theory 33, 993–1012 (1998)
Leroy, N., Kokosy, A., Perruquetti, W.: Dynamic modeling of a parallel robot. Application to a surgical simulator. In: 2003 Proceedings. ICRA’03. IEEE international conference on robotics and automation, pp. 4330–4335 (2003)
Kalani, H., Rezaei, A., Akbarzadeh, A.: Improved general solution for the dynamic modeling of Gough–Stewart platform based on principle of virtual work. Nonlinear Dyn. 83, 2393–2418 (2016)
Akbarzadeh, A., Enferadi, J.: A virtual work based algorithm for solving direct dynamics problem of a 3-RRP spherical parallel manipulator. J. Intell. Robot. Syst. 63, 25–49 (2011)
Enferadi, J., Tootoonchi, A.A.: Inverse dynamics analysis of a general spherical star-triangle parallel manipulator using principle of virtual work. Nonlinear Dyn. 61, 419–434 (2010)
Yamane, K., Nakamura, Y., Okada, M., Komine, N., Yoshimoto, K.I.: Parallel dynamics computation and H8 acceleration control of parallel manipulators for acceleration display. J. Dyn. Syst. Meas. Control. 127, 185–191 (2005)
Wang, J., Wu, J., Wang, L., Li, T.: Simplified strategy of the dynamic model of a 6-UPS parallel kinematic machine for real-time control. Mech. Mach. Theory 42, 1119–1140 (2007)
Blajer, W., Koodziejczyk, K.: Improved DAE formulation for inverse dynamics simulation of cranes. Multibody Sys. Dyn. 25, 131–143 (2011)
Lebret, G., Liu, K., Lewis, F.L.: Dynamic analysis and control of a Stewart platform manipulator. J. Robot. Syst. 10, 629–655 (1993)
Khalil, W., Ibrahim, O.: General solution for the dynamic modeling of parallel robots. J. Intell. Robot. Syst. 49, 19–37 (2007)
Dasgupta, B., Choudhury, P.: A general strategy based on the Newton–Euler approach for the dynamic formulation of parallel manipulators. Mech. Mach. Theory 34, 801–824 (1999)
Abedloo, E., Molaei, A., Taghirad, H.D.: Closed-form dynamic formulation of spherical parallel manipulators by Gibbs-Appell method. In: 2014 2nd RSI/ISM international conference on robotics and mechatronics (ICRoM), pp. 576–581 (2014)
Nabavi, S.N., Akbarzadeh, A., Enferadi, J.: A Study on Kinematics and Workspace Determination of a General 6-P US Robot, Journal of Intelligent & Robotic Systems, pp. 1–12 (2017)
Narayanan, M.S., Chakravarty, S., Shah, H., Krovi, V. N.: Kinematic-, static-and workspace analysis of a 6-PUS parallel manipulator. In: 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference ASME , pp. 1456–1456.8 (2010)
Ferrari, D., Giberti, H.: A genetic algorithm approach to the kinematic synthesis of a 6-DoF parallel manipulator. In: 2014 IEEE conference on control applications (CCA), pp. 222–227 (2014)
Zhao, Y., Gao, F.: Inverse dynamics of the 6-dof out-parallel manipulator by means of the principle of virtual work. Robotica 27, 259–268 (2009)
Wang, H., Chen, G., Lin, Z.: Forward dynamics analysis of the 6-PUS mechanism based on platform-legs composite simulation. Chinese Journal of Mechanical Engineering, pp. 496 (2009)
Rao, A.K., Saha, S., Rao, P.: Dynamics modelling of hexaslides using the decoupled natural orthogonal complement matrices. Multibody Sys. Dyn. 15, 159–180 (2006)
Lopes, A.M.: Complete dynamic modelling of a moving base 6-dof parallel manipulator. Robotica 28, 781–793 (2010)
Honegger, M., Codourey, A., Burdet, E.: Adaptive control of the hexaglide, a 6 dof parallel manipulator. In: 1997 IEEE international conference on robotics and automation, 1997. Proceedings, pp. 543–548 (1997)
Najafi, A., Movahhedy, M., Zohoor, H., Alasty, A.: Dynamic stability of a Hexaglide machine tool for milling processes. Int. J. Adv. Manuf. Technol. 86, 1753–1762 (2016)
Bonev, I.A., Ryu, J.: A geometrical method for computing the constant-orientation workspace of 6-PRRS parallel manipulators. Mech. Mach. Theory 36, 1–13 (2001)
Harib, K., Srinivasan, K.: Kinematic and dynamic analysis of Stewart platform-based machine tool structures. Robotica 21, 541–554 (2003)
Nabavi, N., Akbarzadeh Tootoonchi, A., Enferadi, J.: Mass and inertia effect of the links on simplification of the 6-PUS robot dynamic equations for different payload ratio. Modares Mech. Eng. 17, 108–116 (2017)
Lopes, A., Almeida, F.: A force–impedance controlled industrial robot using an active robotic auxiliary device. Robot. Comput. Integr. Manuf. 24, 299–309 (2008)
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Nabavi, S.N., Akbarzadeh, A. & Enferadi, J. Closed-Form Dynamic Formulation of a General 6-P US Robot. J Intell Robot Syst 96, 317–330 (2019). https://doi.org/10.1007/s10846-019-00990-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10846-019-00990-7