一种基于基波分离算法的变频介质损耗测量仪

基于市场上对全自动、数字式及有较强抗干扰能力为特征的介质损耗测量仪的迫切需要,在基波相位分离算法基础上,采用45 Hz和55 Hz两种频率的变频电源避开工频干扰,用这两种频率各测量5次,将所有测量值的平均值作为被测试品的介质损耗角正切值,并给出了以dsPIC30F4013为核心的该测量仪器的实现方案。试验结果表明,这种介质损耗测量仪具有运算速度快、测量精度高、抗干扰能力强等特点,具有广阔的应用前景。

A kind of variable frequency dielectric loss measuring instrument based on fundamental waves phase separation algorithm

Based on the urgent need for a kind of dielectric loss measuring instrument which is char -acterized by fully automated , digital and strong anti-interference capability on the market , rely on a fun-damental waves phase separation algorithm , use 45 Hz and 55 Hz（ two frequency ） power to avoid normal interference , the measurement must be operated 5 times under both frequency and the average of all measured values will be take as the tangent value of dielectric loss angle .Besides , the implementation plan of the measuring instrument with dsPIC 30F4013 at its core is provided in this work .The test results show that this instrument is of fast operation , high accuracy as well as good anti -disturbance ability , and has broad application prospects .