Abstract
This paper presents a novel decentralized fixed-time tracking control approach, which realizes the advantages of modular robot manipulators (MRMs) with fixed-time convergence, strong robustness, and high tracking performance. First, to estimate the total uncertainty of MRMs, the fixed-time observer based on the extended state is developed. Then, combined with the disturbance observer, a novel decentralized control method based on a fixed-time control strategy was devised to accomplish global fixed-time convergence of MRMs. And, stability analysis based on Lyapunov is utilized to obtain the fixed-time stability as well as convergence time of MRMs. Finally, numerical analysis and experiment respectively verify the excellent tracking ability of the presented decentralized fixed-time tracking control.
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This work is supported by the National Natural Science Foundation of China (Grant no. 61773075 and 61703055), the Scientific Technological Development Plan Project in Jilin Province of China (Grant nos. 20200801056GH and 20200404208YY), and the Science and Technology project of Jilin Provincial Education Department of China during the 13th Five-Year Plan Period (JJKH20200672KJ, JJKH20200673KJ, and JJKH20210767KJ).
Zengpeng Lu received his B.S. and M.S. degrees from Changchun University of Technology, China, in 2017 and 2020, respectively. He is currently working towards a Ph.D. degree in the Department of Mechanical Engineering, Changchun University of Technology, China. His research interests include intelligent mechanical, robot control, and fault tolerant control.
Yuanchun Li received his M.S. and Ph.D. degrees from Harbin Institute of Technology, China, in 1987 and 1990, respectively. He is currently a Professor in Changchun University of Technology, China. He is also a Professor in Jilin University, China. His research interests include complex system modeling, intelligent mechanical, and robot control.
Yan Li received his B.E. degree from the Changchun University of Technology, Changchun, China, in 2001, an M.S. degree from Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, China, in 2006, and a Ph.D. degree from the Changchun University of Technology, China, in 2020. His research interests include intelligent mechanical and robot control.
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Lu, Z., Li, Y. & Li, Y. A Novel Decentralized Fixed-time Tracking Control for Modular Robot Manipulators: Theoretical and Experimental Verification. Int. J. Control Autom. Syst. 21, 3036–3047 (2023). https://doi.org/10.1007/s12555-022-0235-0
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DOI: https://doi.org/10.1007/s12555-022-0235-0