摘要
研究辨识Preisach分布函数,从而为智能材料中的迟滞非线性现象建模的一种离散方法——一阶滞回曲线法。它结合离散Preisach模型的特点,利用物理学及地质学等学术领域常需绘制的磁学曲线——一阶滞回曲线构造输入序列。基于一阶滞回曲线,提出了两种输入序列构造方法。具有原理清楚,计算简单、易于实现的特点。提出相关命题,阐明了这种辨识方法解的存在性与唯一性。仿真结果表明,该方法切实有效。论文最后就本方法的局限性做了简单讨论。
A discrete method to identify the Preisach distribution function so as to model hysteresis in smart materials was given, which was a method based on first order reversal curves dealing with two kinds of input sequences. The proposition was put forward, which showed that the solution was existent and unique. The simulation result could validate this method. The limitation of the Preisach function by this means was indicated.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2007年第17期4065-4067,共3页
Journal of System Simulation
基金
国家自然科学基金资助(50674005)
