Planning And Simulation Of The Mixed Engine Assembly Line

Mixed engine assembly line is the process to assemble a sequence of different models of engine. Whether it can achieve load, variety and yield the balance of production, depending on the assembly line planning and designing. In order to improve assembly quality, production efficiency and make full use of resources to meet the diverse needs of the market, we must study the balance and production sequence of mixed engine assembly line planning and design. With the improvement of discrete event simulation theory and computer simulation technology, computer simulation gradually applied to the engine assembly line planning and design and operation analysis in foreign, while it is still in the initial stage in domestic. In order to keep up with the world and achieve saving time, effort, money demand, we must do much analysis and research to the engine assembly line simulation mixed-flow.Taking into account the constraints conditions, this paper established multi-objective optimization mathematical models of the mixed assembly line balancing problem and designed the improved genetic algorithm. The algorithm designed method of mutation operator and the choice of cross, recommend penalty function to construct the fitness function and use weighted average method to solve multi-objective optimization problem. The proposed algorithm improved the engine assembly line workstations mixed load balancing level and production capacity effectively and made full use of resources.This paper established multi-objective optimization problem mathematical model of the mixed assembly line production sequence problem and designed a hybrid particle swarm algorithm. The algorithm improved selection method of the individual extreme and the global extreme, used the two objective functions to guide the global optimal, increased the population diversity and enhanced optimize performance, The proposed algorithm reduced the idle time of overload, minimized the production cycle, improved the assembly line production and a balanced ratio effectively and meet the diverse needs of the market.At last, taking LR series mixed engine assembly line for example, used digital simulation to solve the balancing problem and production sequence problem. In order to guarantee load balancing of the entire assembly line and achieve production requirements, used AutoMod to dynamic simulate engine assembly line, verify the practicality and effectiveness of digital simulation.