基于数字滤波技术的虚拟频率补偿研究

为克服传感器硬件补偿方面的不足,达到对系统频带补偿目标和补偿参数的任意设置,采用向后差分法实现数字滤波,改变传统的硬件补偿方法,充分利用软件虚拟仪器的形式实现系统动态特性补偿。运行结果表明,采用虚拟仪器软件滤波技术完全可以解决频带拓宽后的频率补偿,在成本和使用灵活性上,软件滤波比硬件滤波更具有优越性。所以,采用后向差分法实现的数字滤波器是对系统进行动态补偿的一种方便易行的方法。

Study of dummy instrument about frequency compensatory instrument based on digital filter

For overcoming hardware compensation shortage of sensor,obtaining random setup of system frequency compensation aim and offset parameter,realized digital filter of making use of backwards difference method,changed traditional hardware of methods about transmission bands of compensate,sufficiency making use of software dummy instrument achieved dynamic characteristic frequency compensatory,experiment results provided,making use of dummy instrument software technology completely solved frequency compensatory of frequency band windening,software filter advantange to hnndware filter with cost and flexibility.So that,Digit- al filter making use of backwards difference method is one convenience method.