基于支持向量机的腐蚀管线应力软测量方法

Soft sensor of corrosion pipeline stress based on support vector machine

针对含腐蚀凹坑管线的应力计算问题 ,提出了基于支持向量机的软测量分析方法。通过对影响管线应力的因素进行分析 ,运用支持向量机建立含腐蚀凹坑管线的管线应力支持向量机模型。由腐蚀管线应力模型可以看出 ,用SVM建立模型比较简单 ,对原始数据不需要处理即可直接输入 ,避免了繁琐的计算公式和计算过程。由于SVM是通过一个凸二次规划来求解 ,因此得到的解是全局最优解 ,结果具有很高的精度 。

A new method based on support vector machine (SVM) for computing the stress of pipelines with corrsion pits is proposed. After an analysis of factors influencing the stress of the pipeline, a SVM model for the stress of pipelines with corrsion pits is established. Simulation results show that SVM-based soft sensor of corrosion pipeline' s stress has high accuracy, therefore it will be widely used in engineering.