【摘要】 介绍了超磁滞伸缩执行器的自由能磁滞模型,对该自由能磁滞模型的数值计算进行了具体分析,由此提出了该自由能磁滞模型的四种数值实现方法;比较了四种数值实现方法的计算精度和计算效率,并与已有文献的实验结果和计算结果对比,得出近似Gauss-Legendre积分法进行积分离散化与矩阵表示法实现核函数相结合的方法在保证计算精度的同时,大大缩短了运算时间,是超磁致伸缩执行器的自由能磁滞模型的四种数值实现方法中的最优算法。更多还原

【Abstract】 A free energy hysteresis model for giant magnetostrictive actuators was briefly presented,and the free energy hysteresis model was analysed.Four different numerical calculation methods are advanced. Computational precision and computational efficiency of the results obtained by using the four different numerical calculation methods were compared. These results also were compared to the calculation data and the experimental data in the published papers. It states that the method in which the approximately Gauss-Legendre integral method is used to integral discretization and matrix representation is used to implement integral kernel function not only increases computational efficiency but also guarantee computational precision. It is the optimum method for a free energy hysteresis model in giant magnetostrictive actuators.更多还原