桥梁结构的未标记模态特征稀疏编码深度学习监测  

Unlabeled modal characteristics of bridge structure sparse coding depth study monitoring

作　　者：陈莹[1] 黄永彪[1] 谢瑾[2] Chen Ying Huang Yongbiao lie Jin(School of College-prep Foundation Programme for Nationalities, Guangxi University for Nationalities, Nanning 530006, China Computer School, Wuhan University, Wuhan 430072, China)

机构地区：[1]广西民族大学预科教育学院,南宁530006 [2]武汉大学计算机学院,武汉430072

出　　处：《计算机应用研究》2016年第12期3725-3729,共5页Application Research of Computers

基　　金：国家自然科学基金资助项目(61202032)

摘　　要：由于大部分建筑物结构健康问题是累积性损害,很难被实时检测到,实际结构和环境噪声的复杂性使得结构健康监测更加困难,并且现有方法在训练模型时需要大量的数据,但实际中对于数据的标记是很复杂的。为克服该问题,通过配备无线传感器网络,采用稀疏编码实现桥梁结构健康监测,然后通过大量未标记实例在实现特征提取基础上进行稀疏编码算法训练,实现数据维度压缩和无标记数据预处理;并利用深度学习算法实现桥梁结构健康监测类别预测,同时基于线性共轭梯度对Hessian优化进行改进,利用半正定高斯—牛顿曲率矩阵替换不确定Hessian矩阵,进行二次目标组合,以实现深度学习算法效率提升。实验结果表明,所提深度学习桥梁结构安全检测算法实现了环境噪声稀疏编码水平下的高精度结构健康监测。Due to the most health problems of the building structure damage is cumulative, which is difficult to be detected,the complexity of the actual structure and the ambient noise makes it more difficult to do the structural health monitoring, while the existing method requires a lot of data in the training model, but in practice for the tag data it is very complex. To overcome this problem, by the wireless sensor networks, this paper used the sparse coding to achieve bridge structural health monitoring, and through a large number of unlabeled examples of feature extraction in achieving sparse coding algorithms based on training, it realized the data dimensionality reduction and unlabeled data preprocessing. Secondly, it used the deep learning algorithm to predict the bridge structural health monitoring category, and also used the linear conjugate gTadient-based optimization algorithm to improve the Hessian optimization, and used the semi definite Gauss-Newton Hessian matrix to replace uncertain Hessian matrix, which used the secondary target combinations to achieve deep learning algorithm efficiency. Experimental results show that the depth of the structural safety of the bridge learuing detection algorithms achieves a high-precision structural health monitoring of ambient noise levels under sparse coding mentioned.

关 键 词：结构安全 深度学习 稀疏编码 无线传感器 桥梁结构 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]