Nonlinear modeling and parameters identification of ball-screw inerter

被引:0
|
作者
Sun X. [1 ]
Chen L. [1 ]
Wang S. [1 ]
Yang X. [1 ]
机构
[1] School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang
关键词
Ball-screw inerter; Least squweres algorithm; Nonlinearity; Parameter identification;
D O I
10.16450/j.cnki.issn.1004-6801.2016.02.020
中图分类号
学科分类号
摘要
The working principle of a ball-screw inerter was analyzed regarding its nonlinear mechanics characteristics. A nonlinear mechanics model with friction, backlash and elastic force of screw was built based on the analysis of the major components of the ball-screw inerter. The mechanical responses of the ball-screw inerter were obtained by testing a ball-screw inerter with different inertances and excitation inputs using a CNC hydraulic servo exciting test-platform. Based on the testing results, the influence of friction and backlash on the mechanical performance of the ball-screw inerter was investigated, and a mechanics model with easily identifiable parameters was obtained with the simplification of friction and backlash. According to the experimental data, the parameters of the ball-screw inerter mechanics model were identified through the recursive least squares algorithm. Comparison of the simulation and experimental results of the ball-screw inerter output force showed that the root mean square value error of the output force in one period was less than 7%, which proves the efficiency of the proposed method. © 2016, Editorial Department of JVMD. All right reserved.
引用
收藏
页码:329 / 334
页数:5
相关论文
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