Kinematic and Singularity Analysis of PRoM-120 – A Parallel Robotic Manipulator with 2-PRU/PRS Kinematic Chains
DOI:
https://doi.org/10.21776/ub.jrm.2018.009.03.7Keywords:
PRoM-120, Screw System, Kinematic Analysis, Singularity AnalysisAbstract
PRoM-120 was a parallel robotic manipulator which constructed by 2-PRU/PRS kinematic chains. The mobility of this manipulator was 3 DOF, i.e. 1 translational DOF, and 2 rotational DOF (1T2R). The objective of this research was to analyze kinematic, and singularity of PRoM-120 based on its geometrical configuration. Inverse kinematics and velocity analysis were carried out by applying loop vector equation. Meanwhile, all screw systems existed in PRoM-120 were derived using screw theory. Singularity analysis revealed that PRoM-120 had no constraint singularity within its workspace. The kinematic singularity of PRoM-120 showed similar condition to transmission singularity. Three types of both singularities were examined and presented for general condition and selected numerical value of kinematic constants having by PRoM-120. The selected numerical values of those kinematic constants showed only one pose for the singular condition, which was the direct kinematic or the output transmission singularity.References
Z. Pandilov and V. Dukovski, “Comparison of the Characteristics Between Serial and Parallel Robots,†Fascicule, vol. 1, no. 1, pp. 2067–3809, 2014.
K. H. Hunt, “Structural kinematics of in and parallel and actuated robot arms,†ASME J. Mech. Transm. Autom. Des., vol. 105, pp. 705–712, 1983.
J. A. Carreterro, M. Nahon, C. M. Gosselin, and B. Buckham, “Kinematic analysis of a three-dof parallel mechanism for telescope application,†in Proceeding of ASME Design Automation Conference, 1999, pp. 17–24.
Q. Li, Z. Chen, Q. Chen, C. Wu, and X. Hu, “Parasitic motion comparison of 3-PRS parallel mechanism with different limb arrangements,†Robot. Comput. Integr. Manuf., vol. 27, no. 2, pp. 389–396, 2011.
L. Xu, Q. Li, J. Tong, and Q. Chen, “Tex3: An 2R1T Parallel Manipulator with Minimum DOF of Joints and Fixed Linear Actuators,†Int. J. Precis. Eng. Manuf., vol. 19, no. 2, pp. 227–238, 2018.
S. Herrero, C. Pinto, O. Altuzarra, and C. Roldan-Paraponiaris, “Analysis and Design of the 2PRU-1PRS Manipulator for Vibration Testing,†in Proceedings of the ASME 2014 International Mechanical Engineering Congress and Exposition, 2014, pp. 1–8.
S. Herrero, C. Pinto, O. Altuzarra, and M. Diez, “Analysis of the 2PRU-1PRS 3DOF parallel manipulator: kinematics, singularities, and dynamics,†Robot. Comput. Integr. Manuf., vol. 51, pp. 63–72, 2018.
C. M. Gosselin and J. Angeles, “Singularity Analysis of Closed-Loop Kinematic Chains,†IEEE Trans. Robot. Autom., vol. 6, no. 3, pp. 281–290, 1990.
D. Zlatanov, I. A. Bonev, and C. M. Gosselin, “Constraint singularities of parallel mechanisms,†in Proceedings - IEEE International Conference on Robotics and Automation, 2002, vol. 1, pp. 496–502.
X.-J. Liu, C. Wu, and J. Wang, “A New Approach for Singularity Analysis and Closeness Measurement to Singularities of Parallel Manipulators,†J. Mech. Robot., vol. 4, no. 4, p. 041001/1-10, 2012.
J. Gallardo-Alvarado, Kinematic Analysis of Parallel Manipulators by Algebraic Screw Theory. Springer International Publishing, 2016.
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