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Application of CG Pseudo-spectral Method to Optimal Posture Adjustment of Robot Manipulator

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Intelligent Robotics and Applications (ICIRA 2021)

Abstract

To consider the energy saving during the robot motion, optimal posture control method for a robot manipulator is proposed. The Chebyshev-Gauss (CG) Pseudo-spectral method is used to discuss the problem with the energy optimal control. The Lagrange interpolation of barycentre is adopted to approximate the state and control variables. The continuous optimal control problem can be converted to a discrete nonlinear programming (NLP) problem. And then it can be solved by Sequential Quadratic Programming (SQP) algorithm. The simulation results of optimal energy control make the robot manipulator from the initial state to the desired terminal posture successfully. The terminal angular velocity of each link is also meet the predetermined value. The control law does not exceed the preset boundary of control.

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Acknowledgement

This research was supported by the National Key R&D Program of China (Grant No. 2019YFB1301403) and National Natural Science Foundation of China (Grant No.62073043). (Corresponding author: Xingguang Duan).

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Shi, Q. et al. (2021). Application of CG Pseudo-spectral Method to Optimal Posture Adjustment of Robot Manipulator. In: Liu, XJ., Nie, Z., Yu, J., Xie, F., Song, R. (eds) Intelligent Robotics and Applications. ICIRA 2021. Lecture Notes in Computer Science(), vol 13013. Springer, Cham. https://doi.org/10.1007/978-3-030-89095-7_3

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  • DOI: https://doi.org/10.1007/978-3-030-89095-7_3

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  • Online ISBN: 978-3-030-89095-7

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