Modelling and calibration of a five link elastic boom of a mobile concrete pump

M. Meiringer, A. Kugi and W. Kemmetmüller

Mathematical and Computer Modelling of Dynamical Systems, 2023, vol. 29, issue 1, 41-68

Abstract: Large-scale manipulators, such as the boom of a mobile concrete pump, typically rely on lightweight construction to maximize their operational range. As a result, significant elastic deformations occur during operation. Various automation and control applications require computationally fast and accurate mathematical models of the manipulator’s motion. In this work, a mathematical model for the boom of a mobile concrete pump with 5 individual joints is presented. This model takes into account the elastic bending in two directions and the torsion of the boom. To reach a high model accuracy, calibration is required. This is challenging due to the large dimension and the outdoor operation, which makes the accurate measurement of the boom position difficult. A camera-based measurement setup is proposed in this work that is tailored for the considered problem. It is shown by measurements that the model is able to achieve a high accuracy with rather small computational costs.

Date: 2023
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DOI: 10.1080/13873954.2023.2177311

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