Accuracy of kinematic and dynamic models of a Gantry-Tau parallel kinematic robot
Publikation/Tidskrift/Serie: 2007 IEEE International Conference on Robotics and Automation (IEEE Cat No. 07CH37836D)
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.
In this article, a new kinematic and a dynamic model for a 3-degree-of-freedom Gantry-Tau parallel kinematic robot are presented. Similar to an earlier proposed kinematic model, the dynamic model is based on the assumption of parallel actuator axes and constant end-effector orientation. The new kinematic model takes into account rotations of actuator axes which do not affect the end-effector orientation. Results from a calibration experiment show an improved positioning accuracy of the new kinematic model. A more general model of the robot including possible geometric inaccuracies causing deviations from the model assumptions has been developed in the modeling language Modelica. In a simulation, the proposed dynamic model is tested as a feedforward term in a control application and is found to improve the tracking performance considerably.
- Control Engineering
- kinematic model
- dynamic model
- Gantry-Tau parallel kinematic robot
IEEE International Conference on Robotics and Automation, 2007
- ISSN: 2152-4092
- ISSN: 1050-4729