Enhanced representation of the nonlinear dynamic characteristics of ball screw feed drive system through developing a three-state model

Min Wan, Jia Dai, Hui Tian, Xue Bin Qin, Wei Hong Zhang

科研成果: 期刊稿件文章同行评审

摘要

This paper develops a three-state model to represent the nonlinear dynamic characteristics of the ball screw feed drive system (BSFDS), including the impact of backlash during velocity reversal. The three states are distinguished as a rigid model during unidirectional motion, a rigid model capturing the backlash phenomenon during velocity reversal, and a flexible model capable of describing the torsional vibrations. Impact of backlash on friction and inertia is considered in the three-state model, with a special friction model established to depict the effect of backlash. To identify the parameters involved in the model, a recursive maximum likelihood (RML) algorithm is proposed, based on the distinct signals designed specially for exciting the three states. The accuracy of parameter identification is enhanced through the combined use of iterative learning (IL). Based on the identified friction results using the IL-based RML, the model parameters are finally determined through least squares fitting. Experiments and comparisons are conducted to verify the effectiveness of this work.

源语言英语
文章编号112371
期刊Mechanical Systems and Signal Processing
227
DOI
出版状态已出版 - 15 3月 2025

指纹

探究 'Enhanced representation of the nonlinear dynamic characteristics of ball screw feed drive system through developing a three-state model' 的科研主题。它们共同构成独一无二的指纹。

引用此