Research on the Residual Vibration Suppression of Delta Robots Based on the Dual-Modal Input Shaping Method

被引:3
|
作者
Guo, Zhongfeng [1 ]
Zhang, Jianqiang [1 ]
Zhang, Peisen [1 ]
机构
[1] Shenyang Univ Technol, Liaoning Prov Key Lab Intelligent Mfg & Ind Robots, Shenyang 110870, Peoples R China
关键词
Delta robot; vibration suppression; modal analysis; multimodal; input shaping; PARALLEL ROBOT;
D O I
10.3390/act12020084
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The Delta robot is a high-speed and high-precision parallel robot. When it is in function, the end effector generates residual vibration, which reduces the repeat positioning accuracy and positioning efficiency. The input shaping method has previously been shown to suppress the residual vibration of the robot, but the vibration suppression effect of the single-modal input shaper is not good for the delta robot, which has multiple dominant modes for the residual vibration. To solve this problem, this paper proposes an effective method for residual vibration suppression of Delta robots based on dual-modal input shaping technology. Firstly, the modal analysis of the Delta robot is performed using finite element software, and the dominant modal of its residual vibration is determined. Secondly, six dual-modal input shapers are designed according to the obtained modal parameters. Finally, Simulink is used for simulation analysis to verify the robustness and vibration suppression performance of the designed six dual-modal input shapers and traditional single-modal input shapers. The simulation results show that the designed ZVD-EI dual-modal input shaper has good robustness, can effectively suppress the residual vibration of the Delta robot, and can effectively improve the repetitive positioning accuracy and work efficiency of the Delta robot when it is running at high speed.
引用
收藏
页数:20
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