Abstract
To achieve accurate dynamic model identification of the hyper-redundant manipulator, a novel identification method based on whale optimization algorithm is proposed. Firstly, the dynamic model of the hyper-redundant manipulator and the base parameter set are introduced, and a joint nonlinear friction model is established. The excitation trajectory is generated using genetic algorithm to optimize the condition number of the regression matrix. Secondly, physical feasibility constraints of the manipulator dynamic model are established, and the whale optimization algorithm (WOA) is applied for dynamic parameter identification under nonlinear constraints. Finally, experiments are conducted to verify the effectiveness of the identification method. The experimental results demonstrate that, compared with the traditional least squares (LS) algorithm and weighted least squares (WLS) algorithm, the proposed identification algorithm can improve the sum of identify torque residual root mean square (RMS) of joints by 11.51 \({\text{N}}{\cdot }{\text{m}}\) and 6.29 \({\text{N}}{\cdot }{\text{m}}\), respectively. The experimental results demonstrate the superiority of the algorithm proposed in this paper.
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This research was supported by the National Natural Science Foundation of China (Grant No. 62173047).
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Zhou, Y., Li, Z., Feng, A., Zhang, X., Zhu, M. (2023). A Novel Hyper-Redundant Manipulator Dynamic Identification Method Based on Whale Optimization and Nonlinear Friction Model. In: Yang, H., et al. Intelligent Robotics and Applications. ICIRA 2023. Lecture Notes in Computer Science(), vol 14267. Springer, Singapore. https://doi.org/10.1007/978-981-99-6483-3_8
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DOI: https://doi.org/10.1007/978-981-99-6483-3_8
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