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Implementing extended kinematics of a cable-driven parallel robot in real-time

: Schmidt, Valentin; Pott, Andreas


Tobias Bruckmann (Ed.); Pott, Andreas (Ed.) ; International Federation for the Promotion of Mechanism and Machine Science:
Cable-driven parallel robots : First International Conference on Cable-Driven Parallel Robots in Stuttgart, Germany
Berlin: Springer, 2013 (Mechanisms and Machine Science 12)
ISBN: 978-3-642-31987-7
ISBN: 978-3-642-31988-4
DOI: 10.1007/978-3-642-31988-4
International Conference on Cable-Driven Parallel Robots <1, 2012, Stuttgart>
Conference Paper
Fraunhofer IPA ()
Echtzeit; Parallelroboter; Parallelkinematik; Seilroboter; IPAnema; Roboter; Kinematik; Algorithmus

This paper describes the implementation of extended pulley kinematics for parallel cable robots. An algorithm for the extended kinematics taking into account cable pulleys is discussed and implemented in real-time. This solution uses an iterative solver which can be computationally costly, depending on convergence. The convergence was tested for a specific geometry and successfully implemented on the cable robot IPAnema. Accuracy of both the standard and extended kinematics were tested according to the ISO 9283 standard. The Absolute accuracy was measured to be 22.32 mm for the standard and 17.50 mm for the extended kinematics which shows some improvement. A method for testing accuracy of orientations is also introduced.