不同等级兰州百合的电学特性

Dielectric Properties of Different Grades of Lilium davidii var. unicolor

以不同等级兰州百合为研究对象,在50Hz～1MHz频率范围内,利用平行极板法研究电特性参数与百合等级的关系。结果表明:在同一加载频率下,随百合等级的提高,其相对介电常数和电导增大,复阻抗减小;随频率的增大,复阻抗和相对介电常数均减小,电导增加。因此,复阻抗、相对介电常数和电导可作为判断百合等级的指示参数。并联等效电感、相位角、品质因数和损耗因子则与百合等级的关联性规律不强。

The relationship between dielectric parameters and Lilium davidii var. unicolor grades was explored by parallel- plate electrode system in the rang of 50 Hz--1 MHz. The results showed that the relative dielectric constant and electric conductance revealed an increase and the equivalent impedance valve revealed a decrease with increasing grade of lily under definite frequency. Similarly, the electric conductance exhibited an increase, and equivalent impedance value and relative dielectric constant exhibited a decrease with the increase of frequency. As a result, equivalent impedance value, relative dielectric constant and electric conductance can be used as an indicator parameter for lily grading. However, impedance phase angle, quality factor and loss coefficient were not correlated with the grade ofLilium davidii var. unicolor.