激光陀螺压电陶瓷作动器的非线性特性分数阶建模  

Fractional-order modeling of nonlinear characteristics of piezoelectric actuators in laser gyroscopes

作　　者：马超 陈炳森[2] MA Chao;CHEN Bingsen(School of Mechatronic Engineering,Xi’an Technological University,Xi’an 710021,China;School of Electronic Information Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学机电工程学院,西安710021 [2]西安工业大学电子信息工程学院,西安710021

出　　处：《国外电子测量技术》2025年第1期1-9,共9页Foreign Electronic Measurement Technology

基　　金：国家重点研发计划项目(2022YFE0123400);陕西省科技计划项目-重点研发计划(2024GX-ZDCYL-031-06)。

摘　　要：传统控制策略难以解决压电陶瓷驱动器控制中的迟滞蠕变非线性问题。为提高锁模控制的稳定性与动态跟踪精度,提出一种新型的具有分数阶算子的迟滞蠕变建模方法。通过分析激光陀螺中压电陶瓷作动器的工作特点及其迟滞蠕变特性和分数阶特性,采用分数阶算子对压电陶瓷作动器的迟滞蠕变特性进行描述,再搭建实验平台获取压电陶瓷作动器的实际数据,并采用差分进化算法进行参数辨识以得到其精细化模型。利用该模型可实时进行误差补偿。仿真与实验结果显示,相对于现有迟滞蠕变模型,所提出的分数阶算子的迟滞蠕变模型精度更高。To address the tracking mode-locking control requirements during the backscattering measurement process of laser gyro resonant cavities,traditional control strategies struggle with the hysteresis creep nonlinearity issues in piezoceramic actuator control.To enhance the stability and dynamic tracking accuracy of mode-locking control,a novel method for modeling hysteresis creep using fractional-order operators is proposed.By analyzing the operational characteristics of piezoceramic actuators in laser gyroscopes and their hysteresis creep and fractional-order properties,the hysteresis creep characteristics of the piezoceramic actuators are described using fractional-order operators.An experimental platform is then set up to obtain actual data from the piezoceramic actuators,and a differential evolution algorithm is used for parameter identification to achieve a refined model.Based on this model,error compensation is performed to provide real-time precise compensation control for the hysteresis creep characteristics of the piezoceramic actuators.Numerical simulations and experimental results show that compared to classical hysteresis creep models,the proposed model using fractional-order operators offers higher precision.

关 键 词：压电陶瓷作动器 迟滞 蠕变 分数阶 

分 类 号：TN249[电子电信—物理电子学] V241.5[航空宇航科学与技术—飞行器设计]