Then, different impedance measuring principles and their realization methods are introduced. The vector voltage / current measuring method virtues and the reasons for using voltage / current method to design are also mentioned. 介绍了多种阻抗测量的原理与实现方法,阐述了矢量电压电流法的优点及本设计采用矢量电压电流法的依据。
PIV measures Vector fields of continuous phase ( current field ) by measuring tracking particle which traces current field. PTV measures disperse phase ( bubble ) velocity, this technique realizes simultaneity measurement of two phases. PIV算法通过示踪粒子测量连续相(水流流场)的矢量场,PTV算法对分散相(气相)进行量测,实现了两相的同时测量。