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Constraint-following control for follow-up support systems under model deviation and time delay
Fangfang Dong1, Zhao Liu1, Xiaomin Zhao2
1School of Mechanical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, 230009, Anhui, PR China.
None:
Follow-up support technology can flexibly and effectively suppress machining chatter in thin-walled components. This paper proposes a servo collaborative constraint handling scheme that focuses on achieving coordinated control for the follow-up support system under multi-source coupled constraints and uncertainties. Firstly, a four-point constraint method is introduced, which simplifies the description of pose coordination through the introduction of auxiliary points, and constructs the coordinated relationship of the dual robots' end-effectors under complex geometric constraints in an intuitive and analytical manner. Secondly, a robust controller based on constraint-following theory is designed, providing an effective means to parameterize the total uncertainty boundary structure caused by model deviation and time delay. Finally, the practical stability of the control algorithm is proven, and its effectiveness and strong robustness are validated through comparative simulations.
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