基于改进灰狼算法优化SVR的混凝土中钢筋直径检测方法  

Detection Method of Rebar in Concrete Diameter Based on Improved Grey Wolf Optimizer-based SVR

作　　者：卢纯义 于津 余忠东 丁双松 张占龙[2] 裘科成 LU Chun-yi;YU Jin;YU Zhong-dong;DING Shuang-song;ZHANG Zhan-long;QIU Ke-cheng(Lanxi Power Supply Company,State Grid Zhejiang Electric Power Co.,Ltd,Jinhua,Zhejiang 321100,China;State Key Laboratory of Power Transmission Equipment&System Security and New Technology,Chongqing University,Chongqing 400044,China)

机构地区：[1]国网浙江省电力有限公司兰溪市供电公司,浙江金华321100 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《计算机科学》2022年第11期228-233,共6页Computer Science

基　　金：国家自然科学基金(52077012)。

摘　　要：传统钢筋混凝土检测方法通过线性拟合或标准值查表法只能对钢筋直径做大致估算,无法精确测量。针对钢筋直径检测中样本数据较少、检测结果受到钢筋埋深及相邻钢筋间距的影响而非表现出非线性回归变化的情况,提出了基于改进灰狼算法(Improved Grey Wolf Optimizer,IGWO)优化的支持向量回归机(Support Vector Regression,SVR)检测方法(IGWO-SVR)。首先,通过反向学习策略优化初始化种群分布,改善了灰狼优化算法(Grey Wolf Optimizer,GWO)的全局搜索能力,通过随机差分变异策略扩大狼群动态搜索范围,避免了灰狼优化算法陷入局部最优;然后,将改进后的灰狼优化算法应用于支持向量回归机的核心参数寻优,以改良算法模型的检测性能;最后,与另外3种算法模型的实验结果进行对比分析,结果表明了所提方法在钢筋直径检测中的精度以及优化模型与实际值的拟合度都得到了有效提升。The traditional reinforced concrete detection method uses linear fitting or standard value look-up table method,which can only roughly estimate the diameter of rebar.In view of the fact that there are few sample data of the diameter detection,and the detection result changes non-linearly due to the influences of the buried depth and the distance between adjacent rebars,a SVR detection method based on IGWO is proposed(IGWO-SVR).Firstly,the inverse learning strategy is used to optimize the initial population distribution,which improves the GWO global search ability.And he random differential mutation strategy is used to expand the search range,which can avoid the GWO algorithm from falling into the local optimum.Then,the IGWO algorithm is applied to the core parameter optimization of the SVR to improve the detection performance.Finally,the comparison and analysis of experimental results with the other three algorithm models show that the accuracy of the proposed method in the detection of rebar diameter has been effectively improved.

关 键 词：钢筋直径 灰狼优化算法 支持向量回归机 反向学习策略 随机差分变异策略 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]