李萨如图形在检测系统中的应用

APPLICATION OF LISSAJOUS FIGURES IN DETECTING SYSTEM

  • 摘要: 李萨如图形可以检测两个相同频率信号的相位差. 主要论述具有惯性质量、弹簧和阻尼器的二阶加速度测量系统,其动态响应特性的分析方法,如何利用李萨如图形来检测力平衡式加速度传感器的动态特性,即幅频特性和相频特性,从而确定传感器的固有频率\omega_n和阻尼比\xi , 以此来评定传感器的综合特性.

     

    Abstract: Lissajous figures can be used to detect the phase shift of two signals with a same frequency. This paper introduces a analysis method for determining dynamiccharacteristics of a second order acceleration measurement system with inertialmass, spring and damping, where the Lissajous figures are usedto detect the dynamic characteristics of the force balance accelerationsensor, i.e. amplitude response and phase response. The naturalfrequency \omega _n and damping ratio \xi of the sensorare determined in order to assess the overall performance of the sensor.

     

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