基于Duffing方程参数敏感性提取谐振型传感器频率的仿真研究  

Simulation Research on Detection of Syntony Sensor′s Frequency Using Parameter Sensitive Property in Duffing Equation

作　　者：赵向阳[1] 刘君华[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《传感技术学报》2002年第1期1-4,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金(5 0 0 770 16)资助

摘　　要：由于谐振型传感器在感测被测之量变化时 ,表现为谐振频率的偏移 ,因此 ,为提高传感器的分辨率和灵敏度 ,对探索频偏的精确测定很为重要 .本文首先对 Duffing方程进行仿真 ,指出 Duffing方程在从混沌状态到大周期转变时 ,同时具有幅值敏感性和频率敏感性 ,进一步提出频率敏感性可应用于传感器微弱频率变化的提取 .仿真表明该方法还能实现对不同频率变化精度的预性测量 ,文中还进一步分析了其理论基础 。For enhancing sensitive and resolving power it is very important to explore the method to detect frequency varitation which is the syntony sensor′s output. It is pointed that Duffing equation express amplitude and frequency sensitive property when system transits from chaotic to great periodic motion and that frequency sensitive property fits for extraction of weak frequency variation through simulation. It is verified to realize flexible measure at different frequency variation precision through simulation. The theory basis is further analyzed and the standpoint about equivalent driven force is presented.

关 键 词：谐振传感器 DUFFING方程 频率敏感性 预性测量 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]