Hostname: page-component-6766d58669-bp2c4 Total loading time: 0 Render date: 2026-05-18T02:23:14.579Z Has data issue: false hasContentIssue false

High accuracy hybrid kinematic modeling for serial robotic manipulators

Published online by Cambridge University Press:  19 September 2024

Marco Ojer*
Affiliation:
Vicomtech Foundation, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastian, Spain University of the Basque Country (UPV/EHU), Donostia-San Sebastian, Spain
Ander Etxezarreta
Affiliation:
Vicomtech Foundation, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastian, Spain
Gorka Kortaberria
Affiliation:
Tekniker Research Centre, Basque Research and Technology Alliance (BRTA) Eibar, Eibar, Spain
Brahim Ahmed
Affiliation:
Tekniker Research Centre, Basque Research and Technology Alliance (BRTA) Eibar, Eibar, Spain
Jon Flores
Affiliation:
Tekniker Research Centre, Basque Research and Technology Alliance (BRTA) Eibar, Eibar, Spain
Javier Hernandez
Affiliation:
Vicomtech Foundation, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastian, Spain
Elena Lazkano
Affiliation:
University of the Basque Country (UPV/EHU), Donostia-San Sebastian, Spain
Xiao Lin
Affiliation:
Vicomtech Foundation, Basque Research and Technology Alliance (BRTA), Donostia-San Sebastian, Spain
*
Corresponding author: Marco Ojer; Email: mojer@vicomtech.org

Abstract

In this study, we present a hybrid kinematic modeling approach for serial robotic manipulators, which offers improved accuracy compared to conventional methods. Our method integrates the geometric properties of the robot with ground truth data, resulting in enhanced modeling precision. The proposed forward kinematic model combines classical kinematic modeling techniques with neural networks trained on accurate ground truth data. This fusion enables us to minimize modeling errors effectively. In order to address the inverse kinematic problem, we utilize the forward hybrid model as feedback within a non-linear optimization process. Unlike previous works, our formulation incorporates the rotational component of the end effector, which is beneficial for applications involving orientation, such as inspection tasks. Furthermore, our inverse kinematic strategy can handle multiple possible solutions. Through our research, we demonstrate the effectiveness of the hybrid models as a high-accuracy kinematic modeling strategy, surpassing the performance of traditional physical models in terms of positioning accuracy.

Information

Type
Research Article
Copyright
© The Author(s), 2024. Published by Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable