Research On Scheduling Method And Application In Turbocharger Of Marine Diesel Engine Machining Workshop With Energy Consumption

Through the high-quality development of manufacturing enterprises,the transformation from a large manufacturing country into a manufacturing power has always been an urgent desire for China’s future development and an inevitable requirement for sustainable economic development.As an important industrial technology field,marine engineering equipment and technology,the development of its related technologies and supporting facilities represent China’s strength and level in the marine field.Therefore,"Made in China 2025" includes marine engineering equipment and technology into the top ten development areas of the manufacturing power strategy.The marine industry is the basic industry for the development of marine engineering equipment and technology,and marine diesel engines are the heart of the marine industrial power system,which determines its’ performance.The design and manufacturing level of marine diesel engines have a profound impact on the marine industry and even marine engineering equipment and technological developmentAs one of the core components of marine diesel engines,the production of superchargers is similar to other machinery manufacturing products.It is generally faced with energy and environmental problems such as high energy consumption and high emissions.How to optimize manufacturing resources on the premise of ensuring processing efficiency,reducing the overall energy consumption of the machining and manufacturing system of marine diesel engines and their components,and achieving the parallel development of manufacturing levels and manufacturing energy efficiency is a problem worthy of in-depth research and has important engineering significance and academic value.As an important part of the manufacturing system,production scheduling can effectively increase the production efficiency of the workshop and reduce the energy and emission in the production process of the workshop through the reasonable and effective allocation of the existing manufacturing resources of the workshop without increasing or adding a small amount of additional costs,thereby achieving efficient and green production,and improving the overall energy efficiency of the workshop.The thesis considers the production resources and transportation resources and their energy consumption and studies the optimization scheduling problem of floor with the goal of completion time and energy consumption.The main contents are as follows:(1)Aiming at the entire machining process of the two important components of the turbocharger,the compressor impeller and the diffuser,the operation process of the machine tool processing equipment and the crane transportation equipment in the mechanical processing system was analyzed from the time and energy dimensions,Based on the analysis results,the optimization scheduling problem is proposed.A mathematical model of optimization scheduling with energy consumption and efficiency as the optimization goals is established,which provides a basis for subsequent scheduling optimization solutions.(2)Based on the description and analysis the advantages and disadvantages of the genetic algorithm and the invasive weed optimization algorithm,combining the advantages and disadvantages of the two algorithms,combined with the multi-objective optimization theory,a multi-objective weed genetic algorithm is proposed,designed for the discrete search space of the problem and the fitness function and seed generation mechanism of the invasive weed algorithm.At the same time,the evolution process of the genetic algorithm is described.The elimination selection strategy is designed.The simulation of the actual production data proves the effectiveness of the algorithm(3)Aiming at the problem that abnormal events frequently interfere with the stable production of the workshop in the actual workshop production environment,through the description and analysis of the abnormal events in the production process of the turbocharger machining workshop,an event-driven dynamic scheduling optimization strategy is proposed.Then a multi-objective dynamic optimization model is established based on the original static mathematical model with the stability index of the machining process,the two abnormal events of sudden machine failure and scrap during the machining of the workpiece are simulated and optimized.(4)On the basis of the original marine diesel engine green design platform and configurable MES system,a marine diesel engine turbocharger machining workshop green scheduling subsystem is designed and developed,which is used to guide the arrangement and implementation of the turbocharger machining workshop production plan.