用于原子干涉重力仪的隔振平台模型辨识及验证  

Model identification and evaluatioin of vibration isolation platformfor atomic interference gravimeter

作　　者：梁昌文 马笑笑 朱凌晓 颜树华[1,2] 杨俊[1,2] Liang Changwen;Ma Xiaoxiao;Zhu Lingxiao;Yan Shuhua;Yang Jun(College of Intelligence Science and Technology,National University of Defense Technology,Changsha 410073,China;Interdisciplinary Center for Quantum Information,National University of Defense Technology,Changsha 410073,China;96783 Unit of PLA,Huaihua 418000,China)

机构地区：[1]国防科技大学智能科学学院,长沙410073 [2]国防科技大学量子信息学科交叉中心,长沙410073 [3]中国人民解放军96783部队,怀化418000

出　　处：《仪器仪表学报》2023年第9期187-194,共8页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(12004428);湖南省自然科学基金优秀青年项目(2021JJ20047)资助。

摘　　要：负刚度隔振平台广泛应用于原子干涉重力仪等量子精密测量设备,其低频性能和环境自适应能力对设备性能影响较大,为此本文对典型商用负刚度隔振平台进行了半主动改造,以进一步增强隔振平台综合性能。首先从理论上对力-位移关系做了简要分析,着重探讨了负刚度特性和承载能力的决定因素;然后建立并分析了系统运动模型,分别在时域和频域对模型参数做了精准辨识,根据测试结果对半主动隔振做了仿真分析,并采用贝叶斯优化算法快速找到最优控制参数;最后在真实系统上进一步验证了该方案,结果表明半主动隔振可将系统的低频共振峰衰减357倍,系统在低于0.3 Hz和高于8 Hz的频段能起到良好的隔振效果,超低频隔振性能有显著提升,文中所提方案可广泛应用于量子精密测量相关隔振设备。Negative stiffness vibration isolation platform(NSVIP)is widely used in quantum precision measurement equipment such as atomic interference gravimeter.Its performance is significantly influenced by low-frequency performance and environmental adaptability of the isolator.To improve overall performance of the vibration isolator,this research performs a semi-active transformation of a standard commercial NSVIP.Firstly,the force-displacement relationship is analyzed theoretically,focusing on the determinants of negative stiffness characteristics and bearing capacity.Then,the motion model is formulated and analyzed,and the parameters are accurately identified in the time and frequency domain,respectively.Moreover,the semi-active vibration isolation(SAVI)is simulated and analyzed,and the Bayesian optimization is used to quickly determine the optimal control parameters.Finally,the scheme is further verified on the actual system.The result shows that SAVI can attenuate the low-frequency resonance peak by 357 times.The system can achieve good vibration isolation effects in the frequency band below 0.3 Hz and above 8 Hz.The low-frequency vibration isolation performance is significantly improved.The proposed solution can be widely used in related vibration isolation equipment for quantum precision measurement.

关 键 词：原子干涉 重力仪 隔振 模型辨识 贝叶斯优化 

分 类 号：TH823[机械工程—仪器科学与技术]