基于堆叠稀疏自编码器的多缸喷油器堵塞定位算法  

Blockage Location Algorithm of Multi-cylinder Fuel Injectors Based on Stacked Sparse Autoencoder

作　　者：王健 黄英[1,2] 高晓宇 王拓 王绪 惠嘉赫 WANG Jian;HUANG Ying;GAO Xiaoyu;WANG Tuo;WANG Xu;HUI Jiahe(School of mechanical and engineering,Beijing Institute of Technology,Beijing 100081,China;Chongqing Innovation Center,Beijing Institute of Technology,Chongqing 401120,China;Integrated Transmission Technology Department,China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学重庆创新中心,重庆401120 [3]北方车辆研究所综合传动技术部,北京100072

出　　处：《兵工学报》2024年第10期3706-3717,共12页Acta Armamentarii

基　　金：国家自然科学基金项目(51475043、50975026)。

摘　　要：燃油喷射系统的工作质量直接影响柴油机工作过程及性能,针对多缸机不同喷油器发生堵塞故障且故障程度不一时,传统故障诊断方法难以精准定位故障喷油器的问题,提出一种基于堆叠稀疏自编码器(Stacked Sparse Autoencoder,SSAE)的故障定位算法。通过SSAE提取不同喷油器发生堵塞故障时轨压信号的深层特征,以softmax网络实现故障部件定位。以一维轨压信号为输入,故障喷油器定位为输出,并研究算法超参数对算法精度的影响。研究结果表明,此算法能精准定位发生堵塞故障的喷油器,且精度不受堵塞程度的影响,故障诊断正确率可达96.7%。The quality of the fuel injection system directly affects the working process and performance of diesel engines.The traditional fault diagnosis methods are difficult to accurately locate the faulty injectors when the blocking faults occur in different injectors of multi-cylinder engines with varying degrees of fault.A fault location algorithm based on stacked sparse autoencoder(SSAE)is proposed.The deep features of rail pressure signals are extracted by SSAE when the fuel injectors at different positions experience the blocking faults,and softmax network is used to locate the faulty injectors.The influence of algorithm hyperparameters on algorithm accuracy is studied by takin one-dimensional rail pressure signal as input and faulty injector position as output.The final results indicate that this algorithm can accurately locate the fuel injector with blocking faults,and the locating accuracy is not affected by the degree of blockage.The fault diagnosis accuracy can reach 96.7%.

关 键 词：高压共轨 不同喷油器堵塞 堆叠稀疏自编码器 故障定位 

分 类 号：TK428[动力工程及工程热物理—动力机械及工程]