LI Shuiping, XIONG Yongli, WANG Zhichao. Research on acquisition method of admittance circle of PZT[J]. 2020, (4): 49-51+55. DOI: 10.13873/J.1000-9787(2020)04-0049-03.
The advantages and disadvantages of the average method
weighted average method and least square method based on kasa objective function that used in the acquisition of the admittance circle of PZT are analyzed and compared. Through comprehensive consideration of the influence of the distribution
the quantity
the outlier points and random error of admittance point by simutlation. Compared the situation of the admittance circle acquisition situation of the three methods under the influence of the above effects
the optimal method is least square method based on Kasa objective function. Finally the correctness of simulation analysis is verified by experiments which provides guidance for subsequent piezoelectric performance measurement.