基于遗传算法和支持向量回归的锂电池健康状态预测

被引:64
作者
刘皓 [1 ]
胡明昕 [2 ]
朱一亨 [2 ]
於东军 [2 ]
机构
[1] 南瑞集团(国网电力科学院)有限公司
[2] 南京理工大学计算机科学与工程学院
关键词
遗传算法; 支持向量回归; 锂电池; 健康状态; 超参数优化;
D O I
10.14177/j.cnki.32-1397n.2018.42.03.011
中图分类号
TM912 [蓄电池]; TP18 [人工智能理论];
学科分类号
080802 [电力系统及其自动化]; 140502 [人工智能];
摘要
为了提高锂电池健康状态(SOH)的预测精度,该文提出了1种基于遗传算法和支持向量回归(GA-SVR)的联合算法。通过GA解决SVR模型中的超参数优化问题。GA-SVR随机生成1组染色体,每个染色体包含了相应的SVR超参数信息。利用适应度函数计算出每条染色体的适应度值。根据适应度值对染色体进行选择、基因重组和变异等遗传操作,从而更新染色体的超参数信息。经过多次迭代后,找到适应度最大的染色体。从该染色体中提取相应的超参数信息,并训练最终的SVR预测模型。在美国国家航空航天局(NASA)锂电池数据集上的实验结果表明,该文算法优于基于混合像元核函数的高斯过程回归(SMK-GPR)算法、基于多尺度周期协方差函数的高斯过程回归(P-MGPR)算法、基于多尺度平方指数函数的高斯过程回归(SE-MGPR)算法和改进的基于粒子群优化的支持向量回归(IPSO-SVR)算法。
引用
收藏
页码:329 / 334+351 +351
页数:7
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