{"title":"Hammerstein structure based high-precision modeling and identification of piezoelectric fast steering mirror","authors":"Sen Yang , Xiaofeng Li , Yanan Li","doi":"10.1016/j.ymssp.2025.113329","DOIUrl":null,"url":null,"abstract":"<div><div>Research on the hysteretic-coupling between dual piezoelectric actuators under uniaxial condition and electromechanical cross-coupling under biaxial condition of the complex piezoelectric fast steering mirror (PFSM) system remains insufficiently explored, resulting in persistent challenges to achieving high-precision modeling. In this paper, a comprehensive model of the PFSM is established based on the Hammerstein structure. An improved asymmetric Bouc–Wen model is proposed to characterize the nonlinear rate-independent hysteresis, while a biaxial coupling dynamic is derived to represent the linear rate-dependent physical behavior. Considering the isolation of each module across different frequency scales, a step-by-step parameter identification method is presented. Experimental results show that the output of the identified model exhibits excellent consistency with the hysteresis, creep, and electromechanical behaviors of the PFSM. Finally, the predicted outputs are compared with those of existing comprehensive models and evaluated against measured data under various excitation signals. The significant reduction in errors validates the effectiveness of the proposed modeling approach.</div></div>","PeriodicalId":51124,"journal":{"name":"Mechanical Systems and Signal Processing","volume":"239 ","pages":"Article 113329"},"PeriodicalIF":8.9000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mechanical Systems and Signal Processing","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0888327025010301","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Research on the hysteretic-coupling between dual piezoelectric actuators under uniaxial condition and electromechanical cross-coupling under biaxial condition of the complex piezoelectric fast steering mirror (PFSM) system remains insufficiently explored, resulting in persistent challenges to achieving high-precision modeling. In this paper, a comprehensive model of the PFSM is established based on the Hammerstein structure. An improved asymmetric Bouc–Wen model is proposed to characterize the nonlinear rate-independent hysteresis, while a biaxial coupling dynamic is derived to represent the linear rate-dependent physical behavior. Considering the isolation of each module across different frequency scales, a step-by-step parameter identification method is presented. Experimental results show that the output of the identified model exhibits excellent consistency with the hysteresis, creep, and electromechanical behaviors of the PFSM. Finally, the predicted outputs are compared with those of existing comprehensive models and evaluated against measured data under various excitation signals. The significant reduction in errors validates the effectiveness of the proposed modeling approach.
期刊介绍:
Journal Name: Mechanical Systems and Signal Processing (MSSP)
Interdisciplinary Focus:
Mechanical, Aerospace, and Civil Engineering
Purpose:Reporting scientific advancements of the highest quality
Arising from new techniques in sensing, instrumentation, signal processing, modelling, and control of dynamic systems