Abstract
Kinematics with six degrees of freedom can be of several types. This paper describes the inverse dynamic model of a novel hybrid kinematics manipulator. The so-called Epizactor consists of two planar disk systems that together move a connecting element in 6 DOF. To do so each of the disk systems has a linkage point equipped with a homokinetic joint. Each disk system can be described as a serial 3-link planar manipulator with unlimited angles of rotation. To compensate singularities, a kinematic redundancy is introduced via a fourth link. The kinematic concept leads to several technical advantages for compact 6-DOF-manipulators when compared to established parallel kinematics: The ratio of workspace volume and installation space is beneficial, the number of kinematic elements is smaller, and rotating drives are used exclusively. For a singularity-robust control-approach, the inverse dynamic model is derived using the iterative Newton–Euler-method. Feasibility is shown by the application of the model to an example where excessive actuator velocities and torques are avoided.
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Pott, P.P., Wagner, A., Badreddin, E. et al. Inverse Dynamic Model and a Control Application of a Novel 6-DOF Hybrid Kinematics Manipulator. J Intell Robot Syst 63, 3–23 (2011). https://doi.org/10.1007/s10846-010-9464-1
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DOI: https://doi.org/10.1007/s10846-010-9464-1