考虑设备多状态的缸盖生产线性能分析与优化

Performance Analysis and Optimization of Cylinder Head Production Lines Considering Multiple States of Equipment

为实现发动机缸盖生产线的性能提升和成本管控,提出一种考虑设备多状态的发动机缸盖生产线性能分析与缓冲区配置优化方法。首先,采用马尔可夫模型揭示设备多状态与缓冲区库存的变化规律,建立了生产线可用度与缓冲区容量的耦合模型。其次,构建了以生产线可用度和缓冲区配置成本为目标的多目标优化模型,并采用NSGA-Ⅱ算法求解优化模型。最后,通过案例证明所提方法能提高缸盖生产线的生产性能并降低缓存区配置成本。

To improve the performance and reduce the production cost for engine cylinder head production lines,a performance analysis and buffer allocation optimization method of engine cylinder head production lines was proposed considering multi-state equipment.Firstly,the Markov model was applied to reveal the relationship between multiple states of the equipment and buffer inventory,and considering the availability of the production lines and buffer capacity a coupling model was constructed.Then,a multi-objective model that considered the availability of the production line and the buffer allocation cost as objectives was developed,and the NSGA-Ⅱ algorithm was applied to optimize the model.Finally,a case study was implemented which verify the feasibility of the proposed method that may improve production performance and reduce the buffer allocation costs.