摘要
近来,磁性器件得到广泛的应用,但磁性材料的磁化过程伴随有能量的损耗,产生磁滞现象,这种磁滞非线性有时会产生较大的滞回性误差,这就限制了磁性器件的广泛使用。因此,对磁性器件磁滞现象的研究具有重要意义。
本文首先对磁性材料、磁性器件和Jiles-Atheron(JA)、Preisach、Stoner-Wolhfarth(SW)、Globus四种磁滞模型做了介绍,然后对JA和SW两种模型及各自的性能和局限性做了细致的分析。
详细研究了JA模型的基本理论及其数学执行式,采用JA模型算法的程序研究了JA模型中k、a、α、c、MS 5个参数对JA磁滞曲线的影响。
接下来研究了SW模型理论,在对比了JA模型和SW模型各自的性能和局限性的基础上,提出了一种新型的JA/SW三维混合模型。该模型将两种模型合并到一个方程中,以SW得出的三维各向异性的向量作为JA模型的输入,从而实现了将各向异性引入到JA模型中。在JA/SW混合模型理论的基础上又详细的研究了几个重点参数对JA/SW磁滞曲线的影响。
为了验证新提出的JA/SW混合模型的可行性,利用JA/SW算法的程序对微型磁通门传感器进行了仿真。通过设置算法中各参数的不同值来进行仿真,然后与同条件下由实验得到的曲线进行比较。通过分析仿真结果,发现与实验得到的曲线形状基本一致。结果表明JA/SW模型能完成对磁滞的模拟,是一个可使用的较优化的磁滞模型,但也存在一定的误差。
Recently, devices are applied widely, however, magnetization process of magnetic materials accompany with energy loss, cause hysteresis, This non-linear hysteretic sometimes can produce a greater hysteretic nature of the error, which limits the widespread use of magnetic devices. So, it is important to research on the hysteresis of magnetic devices.
In this paper, first we introduce the magnetic material, the magnetic devices and the Jiles-Atherton(JA), Preisach, Stoner–Wolhfarth(SW), Globus four hysteresis models, and then made a detailed analysis to the performance and limitation of the JA model and SW model. It discuss the fundamental theory and implementation of JA model in detail, and employ the procedure of JA algorithm to study the influence of k, a,α, c, MS five parameters on JA hysteresis curve.
The next we discuss the SW theory. We propose a hybrid 3-D JA/SW model after comparing the performance and limitation of JA model with SW model. The proposed model incorporates both models into one single formulation. We employ a virtual 3-D anisotropy-field vector calculated with SW theory as the input of JA model; in this case we introduce the anisotropic into JA model. We discuss the role of several key parameters on JA/SW hysteresis curve.
We employ the hybrid 3-D JA/SW algorithm to simulate the response of miniature flux door sensor, in order to test the feasibility of the proposed hybrid 3-D JA/SW algorithm. We carry out the simulation by setting different parameters of the proposed algorithm, and compare with the hysteresis curve obtained from experiment. We discovered that it practically fitted with the experimental result by analyzing the simulation result. It show that JA/SW model can achieve the simulation of hysteresis. The proposed model is a optimized model, however, there be some errors.
引文
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