مدیریت تقاضای مشتری در تخصیص بهینه فعالیت های کاری به ایستگاه ها با توجه به سفارشات اولویت دار

خط مونتاژ ترکیبی به دلیل ویژگی های خاص و انعطاف نسبت به تغییرات ناگهانی تقاضاها، مورد استقبال بسیاری از تولید کنندگان صنعتی قرار گرفته است. این مقاله ، رویکردی نوین در بحث ارتباط با مشتریان را مورد بحث و بررسی قرار داده است که نتایج آن نشان دهنده مدیریت مناسب تقاضا است. مدل پیشنهادی، به سفارشات اولویت دار توجه بیشتری در رقابت با دیگر تولیدکنندگان دارد و یک خط پیشتاز تولیدی به صورت موازی و با سرعت بیشتر نسبت به خط اصلی تعریف می نماید. با توجه به روند سریع تغییرات محیطی، یکی دیگر از مواردی که می توان برای افزایش انعطاف پذیری در محیط سفارش مبنا در نظر گرفت ایجاد شرایطی برای بالانس مجدد خط می باشد به طوری که بتوان به صورت همزمان هم بار کاری را متعادل نمود و هم هزینه های تخصیص را کاهش داد. در این مقاله، بالانس مجدد خط نیز مورد نظر بوده و در مدل سازی وارد می گردد و کمینه کردن هزینه های آن به عنوان هدف دیگری مورد بررسی قرار می گیرد. بنابراین در این مقاله یک مسئله چندهدفه بالانس خط با بررسی مسائل بالانس مجدد و بالانس عمودی پیشنهاد می شود. در این مسئله برای حل از الگوریتم تجزیه بندرز استفاده شده است. نتایج نشان می دهد روش های دقیق توانایی حل مسائل سایز بزرگ در زمان منطقی را ندارد اما زمان حل برای روش تجزیه بندرز، با توجه به سایز مسئله نشان دهنده کارایی مناسب این الگوریتم است.

customer demand management in the optimal assignment of tasks to work stations according to priority orders

the mix model assembly line has attracted the attention of many industrial manufacturers due to its special features and the ability to adapt to market changes. this article has discussed and investigated a new approach in relation with customers, the results of which indicate the proper management of demand. the proposed model pays more attention to priority customers, and a parallel production line is defined that is faster than the main line and has workers with special skills. according to the rapid process of environmental changes, one of the things that can be considered to increase flexibility in the make to order environment is to set the conditions for rebalancing the line. in this article, the rebalancing of the line is also considered and included in the modeling, and the minimization of its costs is considered as another goal. therefore, in this article, a multi-objective line balancing problem is proposed by examining rebalancing and vertical balancing problems. benders decomposition algorithm is used to solve this problem. the results show that exact methods do not have the ability to solve large-sized problems in a reasonable time, but the solution time for bander’s decomposition method, considering the size of the problem, shows the appropriate efficiency of this algorithmintroductionmix model assembly lines, known for their ability to adapt to changing market demands with minimal adjustments, are currently employed in active industries worldwide. the findings of this article also hold potential for reducing assembly line waste in the country’s manufacturing sector. drawing from the principles of lean production and the theories of scholl and becker, achieving an optimal production line balance can lead to the reduction of at least five out of the ten types of waste. while the topic of line balancing is crucial in itself, this research sheds light on a significant aspect often overlooked in most studies on planning mixed model assembly lines: the order-based environment. many previous studies have focused solely on the ’make-to-order’ environment and its assumptions, often neglecting balance issues. given the paramount importance of customer roles in industries, it is imperative to introduce a framework for managing customer orders within line balancing problem models. the aim of this article is to enhance cost management and productivity in mixed assembly lines across various industries, ensuring that demands are met and assembly process constraints are addressed. to achieve this, we first develop the necessary mathematical models for each component and subsequently devise algorithms for their solutions.materials and methodsan express line is defined in parallel and faster than the main line, as well as having workers with special skills. considering the rapid process of environmental changes, another thing that can be considered to increase flexibility in the base order environment is to create conditions for rebalancing the line so that both the workload and the cost can be balanced at the same time. this reduced the reassignment of duties. from this point of view, in the proposed model in this part, rebalancing of the line is also desired and it is included in the modeling, and the minimization of its costs is considered as another goal of this model.