基于Simulink对RF-SQUID器件仿真研究  

Simulation of RF-SQUID based on Simulink

作　　者：李征儒 陈紫雯 李俊峰 贲放 时宗洋 马平[1] Li Zhengru;Chen Ziwen;Li Junfeng;Ben Fang;Shi Zongyang;Ma Ping(State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,Peking University,Beijing 100871,China;Chinese Academy of Geological Sciences Institute of Geophysical and Geochemical Exploration,Langfang 065000,China;Beijing Machine and Equipment Institute,Beijing 100854,China)

机构地区：[1]北京大学物理学院人工微结构和介观物理国家重点实验室,北京100871 [2]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [3]北京机械设备研究所,北京100854

出　　处：《低温与超导》2021年第9期1-8,共8页Cryogenics and Superconductivity

基　　金：国家“十三五”重点研发计划专项(2017YFC0601901);国家自然科学基金(61571019)资助。

摘　　要：RF-SQUID的物理模型是一个二阶非线性系统,针对该模型的理论计算一般只能依靠数值解,这就极大程度上依赖计算机的算力来进行模型搭建以及数值运算。本文基于Simulink仿真软件,对约瑟夫森结以及射频超导量子干涉器(Radio-Frequency Superconducting Quantum Interference Device,RF-SQUID)探头进行了模拟仿真,给出了模块化的Simulink仿真模型,并且根据模型中的各参数搭建了真实的物理实验模型,最终的仿真结果和实验结果相一致,可为制备RF-SQUID器件时各参数的选择以及系统调试路线的选择提供新的解决方案,也可为RF-SQUID探头的最优化设计提供便利。The physical model of RF-SQUID is a second-order nonlinear system.Generally,the theoretical calculation of the model can only rely on the numerical solution,which largely depends on the computational power of the computer for model building and numerical operation.In this paper,based on Simulink simulation software,Josephson Junction and RF-SQUID(Radio Frequency-Superconducting Quantum Interference Device)probe were simulated.A modular Simulink simulation model was given,and a real physical experiment model was built according to the parameters of the model.The final simulation results are consistent with the experimental results,which can provide a new solution for the selection of parameters and system debugging route when preparing RF-SQUID devices,and also provide convenience for the optimal design of RF-SQUID probes.

关 键 词：RF-SQUID 二阶非线性系统 SIMULINK 系统仿真 

分 类 号：O5119[理学—低温物理]