执行机构
隔振
复合数
振动
宏
纤维
材料科学
轨道(动力学)
主动振动控制
光纤
结构工程
航空航天工程
声学
工程类
光学
物理
振动控制
计算机科学
电气工程
复合材料
程序设计语言
作者
Jia-Jia Lu,Wen-Hao Qi,Ge Yan,Yan Cao,Tian Zhao,Junwei Shi,Han Yan,Wenming Zhang
标识
DOI:10.1016/j.ast.2024.109519
摘要
• A novel active-passive integrated actuator for micro-vibration isolation is devised. • A dominant-frequency-correction hysteresis modeling strategy is proposed. • A FEFC requiring merely displacement response feedback is developed. • The FEFC can achieve weak-side-effect resonance suppression. • The proposed APIA-MFC has great potential for engineering applications. Micro-vibration suppression is crucial for satellites to ensure high imaging performance of optical loads. Herein, an active-passive integrated actuator based on macro fiber composite for micro-vibration isolation is proposed and investigated. Integrated passive and active vibration suppression is achieved by arraying a composite laminated beam consisting of the stiffness layer, damping layer and macro fiber composite layer. A dominant-frequency-correction hysteresis modeling strategy is devised to describe the asymmetric and rate-dependent voltage-force hysteresis of the proposed actuator. By treating the correction as a disturbance, the voltage-force hysteresis is compensated in combination with an extended state observer. In order to achieve resonance suppression, a full-estimation-feedback controller featuring merely displacement response feedback is developed exploiting the estimation of the extended state observer as feedback. Simulation results verify that the full-estimation-feedback controller is capable of suppressing the resonance peak with weak adverse effects on the transmissibility in the isolation band. Finally, experiments are performed to identify the voltage-force hysteresis model and evaluate the vibration isolation performance. Periodic and sweep excitation test results demonstrate that in passive mode, the actuator has a small resonance frequency of 2.3 Hz and a wide isolation band starting from 3.5 Hz. With the full-estimation-feedback controller, the resonance peak is effectively suppressed using a single signal feedback, while maintaining excellent vibration attenuation within the isolation band. The proposed actuator provides a paradigm for the design of active-passive integration vibration isolators for broadband micro-vibration suppression, which holds significant promise in enhancing the effectiveness of current observation missions.
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