Mixed-model Two-sided Disassembly Line Considering Energy Consumption And Elite Differential Evolution Optimization

With the continuous advancement of technology,the rapid upgrading of various types of technology products has produced a large number of waste products and even waste of resources.In order to promote the development of a resource-saving and environment-friendly society,our country advocates following the sustainable development path of resource recycling and reuse,vigorously promotes the development of remanufacturing,and ensures the industrialization,automation and scale of remanufacturing by establishing efficient flexible disassembly lines.As one of the main methods of recycling waste products,the disassembly line must conform to the characteristics of the product itself,and have the characteristics of high efficiency,stability and uniformity.In order to meet people's growing material needs,modern products have diverse characteristics,and when disassembling large-scale or restricted products,the characteristics of the product must be considered before disassembly operations.Therefore,the traditional single product disassembly production method cannot meet the demand.In the research process of the mixed-model two-sided disassembly line,the influencing factors and mechanisms of the centralized recycling of various products are analyzed,and the disassembly orientation changes caused by the product's own characteristics and the corresponding restriction conditions are considered,so it is more suitable for the disassembly of a variety of large-scale products.In order to coordinately optimize the overall disassembly process,based on the research on the balance of traditional disassembly lines,from the perspective of energy saving and ensuring disassembly safety and environmental safety,the energy consumption during the disassembly process is analyzed and quantified,so that the number of workstations is minimized,Under the premise of the lowest energy consumption and the least harm,the disassembly efficiency should be improved as much as possible.Further study the location characteristics of two-sided disassembly,and use the time axis to express the priority relationship constraints in a linear manner.Make up for the deficiencies of previous studies by increasing the location constraints in the workstation.Extend the problem,and add relevant constraints such as the disassembly mode and workstation opening method on the basis of the research on the balance of the single product two-sided disassembly line to study the mixed-model disassembly process.Based on different types of two-sided disassembly operation modes,a single-product bilateral disassembly line and a mixed-model two-sided disassembly line mathematical model were established respectively.At the same time,to ensure that the number of workstations opened during the disassembly process is the least,the disassembly task distribution is the most even,the recovery benefit is the greatest,and the hazard factors are the least.The goal is optimized to respond to the research background.Aiming at the mathematical model of multi-objective two-sided disassembly line balance under different operation modes,an elite differential evolution algorithm is proposed.The algorithm uses both the random strategy and the evolution strategy in the basic differential evolution algorithm,which enables the algorithm to have global search performance while converging quickly;the use of the elite strategy of survival of the fittest to gradually update each individual in the population greatly enhances the algorithm's convergence performance;random selection Individuals in external archives are inserted into contemporary populations to improve population quality;combined with Pareto to screen multi-objective solutions to eliminate the impact of subjective weights,and at the same time streamline external archives through the crowding distance mechanism to ensure that the quality of the final solutions is objective and superiority.The proposed algorithm is used to solve the 25-scale and 52-scale test cases in the research of the disassembly line balance problem,the investigated two-sided disassembly examples of refrigerators,and the newly established mixed-model two-sided test cases.The analysis and comparison of the solution results verify that the proposed elite differential evolution algorithm has good solution performance and efficiency.Finally,the mathematical models of the single-product two-sided disassembly line and the mixed-flow two-sided disassembly line considering energy consumption were respectively applied to the actual cases investigated by the research group to solve multiple sets of better disassembly plans,and analyze the idle indicators of each station in different modes and the utilization rate,to further verify the balance and efficiency of the mixed-model disassembly mode,and to provide a theoretical basis for the subsequent in-depth research and design of the two-sided disassembly line,which has certain practical significance.