压电模型参数辨识仿真实验

Simulation of Model Parameter Identification for Piezoelectric Materials

在对压电材料电气性能参数分析的基础之上,确立了以等效电路的电容、电感等参数作为压电材料性能指标的主要参数,离散化处理得到相应的差分数学模型,并对其进行了模型参数在线识别与最小二乘法MATLAB参数辨识仿真实验。实验结果表明:压电材料电气参数的辨识可以满足综合性能优化0.5%的设计要求。

Based on analysis of electric performance,parameters such as capacity and inductance are considered as principal model parameters.Therefore a discrete model for them should be established.System identification can be done either off-line or on-line.In this paper,LMS identification is carried out with MATLAB to study different characteristics of the parameters under different modes.Experimental results show that performance of model parameter identification is better than that under normal conditions.