计算力学学报2024，Vol.41Issue(6)：1005-1011,7.DOI:10.7511/jslx20230715001
基于代理模型的柔性机械臂区间不确定性分析
Interval uncertainty analysis of flexible manipulator based on surrogate model
黄文建 1刘放 1李晨晖 1杨明发 1吴宝宁1
作者信息
- 1. 西南交通大学机械工程学院,成都 610031
- 折叠
摘要
Abstract
Aiming at the uncertainty of dynamic responses caused by uncertain parameters in flexible manipulator systems,an interval uncertainty analysis method based on local mean decomposition(LMD)and Chebyshev surrogate model(CM)was proposed.Based on the LMD method,the nonlinear response of the flexible manipulators is decomposed into several components,and the instantaneous amplitude,instantaneous phase and trend term of the signal are analyzed.The Chebyshev surrogate model is constructed for the decomposed signal,and then the complete surrogate model of the flexible manipulators is obtained.The proposed uncertainty analysis method for flexible manipulator can improve the phenomenon of interval boundary failure in traditional CM methods in long-term analysis.A numerical example is used to demonstrate the effectiveness and accuracy of this method in uncertainty analysis of flexible manipulator systems.关键词
柔性机械臂/区间分析/不确定参数/代理模型/Chebyshev多项式Key words
flexible manipulator/interval analysis/uncertain parameters/surrogate model/Chebyshev pol-ynomials分类
机械制造引用本文复制引用
黄文建,刘放,李晨晖,杨明发,吴宝宁..基于代理模型的柔性机械臂区间不确定性分析[J].计算力学学报,2024,41(6):1005-1011,7.
