Fuzzy adaptive impedance control of surface polishing robot

被引:0
|
作者
Chen M. [1 ]
Zhu Z. [1 ]
Zhu Y. [1 ]
Han T. [1 ]
机构
[1] School of Mechanical and Electrical Engineering, Wuhan University of Technology, Wuhan
关键词
fuzzy self-adaptation; impedance control; polishing; system stiffness;
D O I
10.13196/j.cims.2021.0854
中图分类号
学科分类号
摘要
To enable the robot to achieve precise force control during the polishing of curved parts, a reasonable trajectory planning and gravity compensation analysis were carried out, and the influence of impedance control parameters on the steady-state error of force control was analyzed. A system stiffness model in the normal direction of the curved surface was established. To make the robot polishing system had better force tracking performance under different system stiffnesses, a fuzzy adaptive impedance control model that could adapt to changes in system stiffness was proposed. This model adjusted impedance control parameters according to the force error and force error rate by certain fuzzy rules, so as to realize stable normal force control and position control. Simulation and experiments showed that the maximum error of force control of the fuzzy adaptive impedance control model was within ±2 N, and the arithmetic mean deviation of the surface profile of the cylindrical concave curved workpiece polished by this model reaches 0.035μm, which was 59.7% lower than that of the traditional impedance control model, and the polishing quality had also been significantly improved. © 2024 CIMS. All rights reserved.
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页码:2090 / 2099
页数:9
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