压电陶瓷执行器迟滞Bouc-Wen模型的参数交叉估计
首发时间:2013-01-23
摘要:Bouc-Wen模型作为一种描述非线性迟滞环的解析形式,因其广泛适用于许多迟滞系统,越来越受到关注。本文在压电陶瓷执行器Bouc-Wen模型的Hammerstein结构基础上提出了参数交叉估计的思想,采用混沌粒子群算法对其模型参数进行交叉估计研究,并进行了实验验证。实验结果表明,此模型应用于压电陶瓷建模是行之有效的且所采用的参数交叉估计方法具有良好的鲁棒性,提高了建模精度。
关键词: 压电陶瓷执行器 Bouc-Wen模型 参数交叉估计 混沌粒子群算法
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An alternate estimation strategy for Bouc-Wen hysteresis model applied to piezoelectric actuator modeling
Abstract:In this paper, the Bouc-Wen model widely used in describing hysteretic systems is applied to piezoelectric actuator (PEA) modeling and an alternate estimation strategy is presented. First, the alternate identification strategy is explained according to the Hammerstein structure of Bouc-Wen model. Then chaos particle swam optimization (CPSO) algorithm is adopted to parameter alternately optimization. A series of experiments are conducted to verify the efficiency of the proposed identification strategy with satisfactory parameter identification results.
Keywords: piezoelectric actuator Bouc-Wen model parameter alternate estimation chaos particle swam optimization
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