Scheduling plan generation method based on multi-level rolling time domain and multi-item

Abstract

The invention discloses a method for generating a schedule plan based on multi-level rolling time domain and multiple projects, comprising the following steps: (1) using the client multi-project information of the high-level planning time domain as an input of the method to generate a multi-project unlimited capacity plan in each high-level planning time domain; (2) using the multi-project unlimited capacity plan as an input to generate an effective limited capacity plan in each middle-level plan time domain and an order delivery plan in the low-level plan time domain; (3) using the low-levelplan in the middle-level plan time domain to generate an effective production order feeding plan in each low-level plan time domain; in the process, comprehensively using a DBR method and a feedback method to update the project activities in the next high-level planning cycle, the planning activities for the next middle-level planning cycle, as well as manufacturing activities in the low-level planning rolling cycle. The method is important for the multi-project planning to generate efficient mid-level plans in multi-project scheduling that considers resource constraints and project priority constraints.

Description

technical field [0001] The invention belongs to the technical field of resource constraints in the remanufacturing industry, and more specifically relates to a scheduling plan generation method based on multi-level rolling time domain and multi-item. Background technique [0002] In today's competitive manufacturing environment, it is important for different manufacturing companies to deliver products to customers on time to remain competitive. Therefore, manufacturing companies hope to effectively plan and dispatch customer orders to meet customer needs and reduce delays. [0003] Most manufacturing companies use ERP / MPS to generate order plans in high-level plans. At different planning stages, there are different requirements for planning accuracy when carrying out capacity planning. In the higher-level plan, the rough machining plan is mainly formulated, and in the lower-level plan, the detailed production plan is formulated. Coarse planning makes sense when the planni...

AI Technical Summary

Problems solved by technology

However, SDS time on capacity-constrained resources is not considered in these rules

[0018] The order material feeding plan in the low-level planning time domain is often used to formulate the production order material feeding plan, and may not consider the future demand of the next lower-level planning time domain, which will limit the utilization of capacity constraints resources. If it is planned in the low-level planning time domain operation completes ahead of schedule, it is underutilized

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