基于深度迁移学习的玻璃绝缘子自爆状态智能认知方法研究
Research on Intelligent Cognition Method of Self-Exploding State of Glass Insulator Based on Deep Migration Learning
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摘要: 针对现有绝缘子自爆状态检测方法中开环模型泛化能力的不足和深层神经网络结构的缺陷,模仿人类认知模式,借鉴迁移学习和闭环控制思想,该文探索了一种基于深度迁移学习的玻璃绝缘子自爆状态智能认知方法。首先,面向预处理的绝缘子图像,采用交错组卷积策略重构Goog Le Net网络的卷积层,降低卷积复杂度。其次,基于自适应卷积模块组构建绝缘子图像由整体到局部有确定映射关系的动态特征空间数据结构,采用可区分性测度指标评测特征空间的差异认知信息,增强简约特征空间的可解释性。再次,将简约全连接特征向量送给随机配置网络模式分类器,建立具有强泛化能力的绝缘子图像分类准则。最后,模仿人类认知模式,基于广义误差和熵理论,建立玻璃绝缘子图像不确定认知结果的熵形式目标优化函数评测指标,实时评测绝缘子自爆状态认知结果,构建动态迁移学习机制,实现自爆状态多层次差异化特征空间及其分类准则的自寻优调节和重构。实验结果表明了文中方法的可行性和有效性。Abstract: Aiming at the insufficiency of the generalization ability of open-loop models and the drawbacks of deep neural network structure for the existing detection methods of the insulator self-exploding state, drawn on the experience of migration learning and closed-loop control, this paper explores an intelligent cognition method of self-exploding state of glass insulator based on deep migration learning, to imitate human cognition model. Firstly, for the pretreated glass insulator images, the interlaced group convolution strategy was employed to reconstruct the convolution layer of Goog Le Net network, which reduced the complexity of network convolution. Secondly, based on the adaptive convolution module group, the data structure of dynamic feature space of the insulator images was built with certain mapping relationship from global to local, and then the discriminative measure index was used to evaluate the difference cognition information of the feature space to enhance the interpretability of the compact feature space. Thirdly, the compact fully connected feature vector was sent to stochastic configuration networks(SCNs) with universal approximation ability to establish the insulator image classification criterion with strong generalization ability. Finally, imitating human thinking mode, based on the generalized error and entropy theory, the evaluation index of the objective optimization function with entropy form for the uncertain cognition results of glass insulator images was built, to real-time evaluate the cognition results of insulator self-exploding state. The dynamic migration learning mechanism is constructed to realize the self-optimization adjustment and reconstruction of the multi-level differentiated feature space of glass insulator self-explosion state and its classification criteria. The experimental results show the feasibility and effectiveness of the proposed method.