The Estimation of Complex Parameter of Piezoelectric Materials Using Nonlinear Least Squares Method
Ge Qiang · Piezoelectrics and Acoustooptics · 2003
The consideration of the parameters of piezoelectric materials as complex is significant at analysing the performance of piezomaterials. Based on the idea of curve fitting, the nonlinear least squares method (Gauss-Newton method) has been applied to estimate the complex parameters. The emulation results show that the estimated value is close to the real value ,the astringency of algorithm is strong. So as one way of piezoelectric parameter measurement, it is feasible.