论文标题
使用扩展的preisach神经网络通用滞后识别
Universal Hysteresis Identification Using Extended Preisach Neural Network
论文作者
论文摘要
在物理和工程科学的不同分支中,已经观察到滞后现象。因此,已经提出了几种模型用于不同领域的滞后模拟。但是,几乎都不能普遍使用它们。在本文中,通过启发Preisach神经网络的灵感,该网络的灵感来自Preisach模型,该模型基本上是源自Madelungs规则并使用神经网络的学习能力,引入了滞后的自适应通用模型,并称为巨大的Preisach神经网络模型。它由输入,输出和两个隐藏层组成。输入层和输出层包含线性神经元,而第一个隐藏层则包含称为变质的停止神经元的神经元,其激活函数遵循了停止操作员的恶化。停止操作员恶化可以产生非综合磁滞回路。第二个隐藏层包括乙状结肠神经元。添加第二层隐藏层,可帮助神经网络非常平稳地学习非纹相和不对称的磁滞回路。在输入层,除了输入数据外,还包括输入数据更改的速率,以使模型具有学习率依赖性滞后循环的能力。因此,所提出的方法具有与速率无关和速率依赖性滞后的模拟能力,并具有一致或非综合环,以及对称和不对称环路。已经采用了一种新的杂交算法,用于训练基于遗传算法的组合以及次级梯度与空间扩张的优化方法的组合。已通过将其应用于具有不同特征的不同工程领域的各种磁滞来评估所提出模型的通用性。结果表明,该模型在识别所考虑的秘诀方面取得了成功。
Hysteresis phenomena have been observed in different branches of physics and engineering sciences. Therefore, several models have been proposed for hysteresis simulation in different fields; however, almost neither of them can be utilized universally. In this paper by inspiring of Preisach Neural Network which was inspired by the Preisach model that basically stemmed from Madelungs rules and using the learning capability of the neural networks, an adaptive universal model for hysteresis is introduced and called Extended Preisach Neural Network Model. It is comprised of input, output and, two hidden layers. The input and output layers contain linear neurons while the first hidden layer incorporates neurons called Deteriorating Stop neurons, which their activation function follows Deteriorating Stop operator. Deteriorating Stop operators can generate non-congruent hysteresis loops. The second hidden layer includes Sigmoidal neurons. Adding the second hidden layer, helps the neural network learn non-Masing and asymmetric hysteresis loops very smoothly. At the input layer, besides input data the rate at which input data changes, is included as well in order to give the model the capability of learning rate-dependent hysteresis loops. Hence, the proposed approach has the capability of the simulation of both rate-independent and rate-dependent hysteresis with either congruent or non-congruent loops as well as symmetric and asymmetric loops. A new hybridized algorithm has been adopted for training the model which is based on a combination of the Genetic Algorithm and the optimization method of sub-gradient with space dilatation. The generality of the proposed model has been evaluated by applying it to various hysteresis from different areas of engineering with different characteristics. The results show that the model is successful in the identification of the considered hystereses.