Journal
APPLIED MATHEMATICAL MODELLING
Volume 93, Issue -, Pages 206-225Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2020.12.014
Keywords
Continuum robots; Inverse kinematics; Kepler oval; Flexible robots
Funding
- China Postdoctoral Science Foundation [2019M662346]
- Key Research and Development Program of Shandong Province [2019GSF108160]
- Fundamental Research Funds for the Central Universities
- Intelligent Robots and Systems High-precision Innovation Center Open Fund [2019IRS06]
- Key Laboratory of High-efficiency and Clean Mechanical Manufacture at Shandong University, Ministry of Education
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This paper analyzes the inverse kinematics problem of inextensible continuum robots from a new perspective, by replacing the generatrix of the robot's workspace with the Kepler oval. The complicated inverse kinematics problem is simplified into solving the oval equations, leading to the design of an inverse kinematics algorithm. The proposed algorithm demonstrates excellent performance in accuracy and computational efficiency through validation simulations.
This paper tries to analyze the inverse kinematics problem of the inextensible continuum robot from a new perspective. In the analysis, the generatrix of the robot?s workspace is studied and replaced by the Kepler oval. Then the complicated inverse kinematics problem of the multi-section continuum robot is transformed into the easy problem in solving the binary equation set consist of the oval equations. Based on the analysis, the inverse kinematics algorithm for the single-section and multi-section continuum robot is designed. The accuracy and the computational efficiency of the proposed algorithm are evaluated by the positioning error and the computational time, respectively. Two simulations are implemented to verify the validation of the novel algorithm, and the results show the algorithm has a very good performance in accuracy and computational efficiency. The novel inverse kinematics algorithm using the Kepler oval proposed in this paper are generic, which can be extended for analyzing such flexible robots. ? 2020 Elsevier Inc. All rights reserved.
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