Dynamic Dispatching Rules for Robust Production Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing production planning systems fail to prevent a decrease in production efficiency when delays occur, as they generate operation plans that propagate delays across multiple production facilities, affecting downstream processes and product progression.
Innovation Solution
A control rule generating device that includes a rule storage unit and a control rule assigning unit to specify and transmit dispatching rules to production facilities, ensuring robustness by dynamically adjusting production plans and operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed rule is used to generate operation plans by dividing production plans into events, then the operation plan can be generated systematically, but production efficiency decreases when delays occur because the plan cannot adapt to variations
Solution Approach 1:
The patent applies dynamics by transitioning from fixed dispatching rules to dynamically selected rules. The system evaluates multiple candidate dispatching rules and selects the most appropriate one based on current production status, allowing the operation plan to adapt to delays and variations in real-time while maintaining productivity.
Solution Approach 2:
The patent changes the parameter of dispatching rule selection from static to dynamic. By introducing a selection mechanism that chooses from multiple candidate rules based on current conditions, the system can adjust its behavior in response to production variations without requiring complete plan regeneration, thus maintaining efficiency while improving adaptability.
2Device complexity
If a fixed operation plan is generated according to classification rules, then the planning process is simplified, but delays propagate across multiple production facilities affecting downstream processes
Solution Approach 1:
The patent introduces dynamic rule selection that allows the system to adapt to delays without increasing overall planning complexity. By selecting from pre-defined candidate rules based on current status, the system maintains simplicity while improving robustness against production variations and delay propagation.
Solution Approach 2:
The patent implements feedback by continuously monitoring production status and using this information to select appropriate dispatching rules. This feedback mechanism enables the system to respond to delays and prevent their propagation to downstream facilities, improving reliability without significantly increasing system complexity.
3Productivity
If the operation plan is reviewed to prevent delay propagation, then production efficiency can be maintained, but the complexity of control rule management increases
Solution Approach 1:
The patent resolves this contradiction by implementing dynamic rule selection that automatically adapts to production conditions. This eliminates the need for manual plan reviews while maintaining production efficiency, as the system autonomously selects appropriate rules based on current status, avoiding increased control complexity.
Solution Approach 2:
The patent enables self-service by allowing the dispatching system to automatically select appropriate rules based on production status without requiring external review. This maintains production efficiency while avoiding the complexity of manual control rule management, as the system serves itself by making autonomous decisions.
Data Source
AI summary
To ensure robustness to a production variation. A control rule generating device for generating a control rule of a production facility including at least a production device, includes: a rule storage unit configured to store candidates of a dispatching rule serving as the control rule usable for each of the production facility and a control program for implementing the dispatching rule; and a control rule assigning unit configured to specify, for each of the production facility, the dispatching rule corresponding to a predetermined production plan among the candidates of the dispatching rule as the dispatching rule to be applied, and transmit the control program corresponding to the specified dispatching rule to the production facility.