为了从船舶压载水系统中有效挖掘数据信息,降低极限学习机(ELM)初始参数随机性对故障诊断精度的影响,提出基于改进麻雀搜索算法(ISSA)优化ELM的船舶压载水系统故障诊断模型.首先,使用自适应加权策略和Levy飞行策略改进发现者位置公式,获得ISSA并验证其性能;而后利用改进后的麻雀搜索算法对ELM的初始输入权重和阈值进行优化,建立基于ISSA-ELM的故障诊断模型.结果表明,ISSA-ELM模型的故障诊断精度为96.6％,比SSA-ELM、PSO-ELM、GWO-ELM 模型高出 1.8％、3.5％和 2.6％,比 ELM 和 SVM 模型高出 4.5％和 7.1％.
Fault diagnosis of ship ballast water system based on ISSA-ELM
In order to effectively mine data information from ship ballast water systems and reduce the impact of initial parameter randomness of Extreme Learning Machine(ELM)on fault diagnosis accuracy,a ship ballast water system fault diagnosis model based on improved Sparrow Search Algorithm(ISSA)optimized ELM is proposed.Firstly,using adaptive weighting strategy and Levy flight strategy to improve the discoverer position formula,obtaining ISSA and verifying its per-formance;Then,the improved sparrow search algorithm is used to optimize the initial input weights and thresholds of ELM,and a fault diagnosis model based on ISSA-ELM is established.The experimental results show that the fault diagnosis accur-acy of ISSA-ELM model is 96.6％,which is 1.8％,3.5％,and 2.6％higher than SSA-ELM,PSO-ELM,and GWO-ELM models,and 4.5％and 7.1％higher than ELM and SVM models.
ship ballast water systemfault diagnosisextreme learning machine(ELM)improved sparrow search algorithm(ISSA)
万方数据
维普
