Abstract
This paper presents the compliance modeling and error compensation for an industrial robot in the application of ship hull welding. The Cartesian stiffness matrix is derived using the virtual-spring approach, which takes the actuation and structural stiffness, arm gravity and external loads into account. Based on the developed stiffness model, a method to compensate the compliance error is introduced, being illustrated with an industrial robot along a welding trajectory. The results show that this compensation method can effectively improve the robot’s operational accuracy, allowing the actual trajectory of the robot with auxiliary loads to coincide with the target one approximately.
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Acknowledgement
The reported work is partly supported by the National Science and Technology Major Project (No. 2013ZX04003041-6), the Fundamental Research Funds for the Central Universities (No. DUT16RC(3)068), and the Liaoning Province STI major projects (No. 2015106007).
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Wu, G., Wang, D., Dong, H. (2017). Off-Line Programmed Error Compensation of an Industrial Robot in Ship Hull Welding. In: Huang, Y., Wu, H., Liu, H., Yin, Z. (eds) Intelligent Robotics and Applications. ICIRA 2017. Lecture Notes in Computer Science(), vol 10463. Springer, Cham. https://doi.org/10.1007/978-3-319-65292-4_13
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DOI: https://doi.org/10.1007/978-3-319-65292-4_13
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