Data-driven predictive maintenance method for digital welding machines
نویسندگان
چکیده
Digital welding machine (DWM) is an advanced tool for material forming. The lifespan and health status of DWMs are closely related to the safety reliability. To address problem low accuracy in prediction DWMs, a model based on immune algorithm (IA) long short-term memory network (LSTM) with attention mechanism proposed. First, degradation characteristic indicators evaluated selected. Then, index constructed using linear regression quantitatively reflect DWMs. optimized used predict remaining lifespan, compared various models 5 indicators. Finally, predictive maintenance carried out product inspection production scheduling. optimal solution objective function obtained calculate best method digital machine.During process, has 20% decrease root mean square error 35.8% traditional LSTM model. average absolute decreased by 14.2% percentage closer 0, while coefficient determination increases 23%. By combining actual line arrangements, can be performed at most appropriate time minimize costs.
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ژورنال
عنوان ژورنال: Materia-rio De Janeiro
سال: 2023
ISSN: ['1517-7076']
DOI: https://doi.org/10.1590/1517-7076-rmat-2023-0096