双端固定音叉作谐振敏感元件的电磁激励效率的理论与实验研究  

Theoretical and Experimental Study on Efficiency of Electromagnetic Excitement Using DETF as Resonant Sense Organ

作　　者：樊尚春[1] 关铭[1] 庄海涵[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院

出　　处：《传感技术学报》2007年第11期2408-2411,共4页Chinese Journal of Sensors and Actuators

基　　金：国家863资助项目(2006AA04Z364)

摘　　要：为了能够增强谐振音叉的输出信号,进而提高谐振音叉的激励效率,测量、分析并比较了谐振音叉在不同激励信号下的激励效率.针对双端固定音叉,对不同激励信号从理论上进行分析.最后,利用谐振式加速度测试平台,以不同的激励信号对谐振音叉进行激励,测量输出信号.测试结果表明:激励信号的激励效率从大到小的排列顺序是:方波、正弦波、三角波、锯齿波.激励信号所加的直流偏置越大,输出的信号波形的幅值就越大.To enhance the output signal and excitant efficiency of resonant tuning fork,excitant efficiency of various excitant signals on resonant tuning fork has been measured,analysed and compared.Theoretical analysis has been conducted on DETF with various excitant signals.In the end,using resonant acceleration-measure plant,output signals have been measured with various excitant signals on resonant tuning fork.The experimental conclusion are as follows: the rank of excitant efficiency of various excitant signals from big to small is square wave,sine wave,triangle wave,serrasoid wave;the bigger offset added to excitant signal is,the bigger amplitude of output signal wave.

关 键 词：谐振音叉 激励效率 波形 偏置 谐振 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]