Product Development Process Support System for Dependency Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In product development processes, existing methods like QFD and DSM struggle to efficiently manage dependencies between requirements, leading to repetitive and wasteful tasks, especially in complex product development, where contradictions and risks result in inefficient design modifications.
Innovation Solution
A product development process support system that analyzes dependencies between multiple layers of requirements by receiving input on dependencies and influence degrees, using dependency derivation rules to derive relationships between arbitrary requirements, and applying analysis methods like QFD and DSM to prioritize and partition requirements, thereby reducing wasteful repetitive tasks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If QFD method is used to deploy higher-ranking requirements, then requirements breakdown is achieved, but repetitive design tasks occur due to unascertained dependencies between design items
Solution Approach 1:
The patent introduces a dependency analysis module as an intermediary between QFD requirements deployment and DSM design item relationships. This module automatically derives and analyzes dependencies between design items, acting as a mediator that connects the two methods and prevents repetitive tasks by identifying design sequences beforehand
Solution Approach 2:
The patent performs preliminary dependency analysis between design items before the actual design execution. By using DSM to pre-identify dependencies and sequences among design items, the system prepares the design sequence in advance, preventing repetitive tasks during the design phase
2Ease of operation
If DSM method is used to organize relations between design items, then collaboration relationships are ascertained, but description of individual dependencies becomes extremely difficult for complex products
Solution Approach 1:
The patent segments the complex dependency analysis into two distinct parts: (1) high-level requirements dependencies using QFD, and (2) detailed design item dependencies using DSM. This segmentation allows each method to operate at its appropriate level of abstraction, making the overall system manageable despite product complexity
Solution Approach 2:
The patent creates a universal framework that integrates both QFD and DSM methods. The system can handle both requirements-level dependencies and design-item-level dependencies within a single platform, making the dependency management system universally applicable to complex products without requiring separate tools
3Reliability
If individual dependencies between requirements are described in detail, then necessary cooperation is ascertained, but the process becomes unrealistic for actual adoption in complex products
Solution Approach 1:
The patent applies different levels of detail to different parts of the dependency analysis. High-level requirements use aggregated dependency information from QFD, while specific design items use detailed dependency information from DSM. This local quality approach ensures reliability where needed while maintaining productivity through selective detail
Data Source
AI summary
Wasteful repetitive tasks are easily reduced in processes to develop complex products. A product development process support system is a system which analyzes dependencies between a plurality of requirements in product development processes belonging to a plurality of layers, and comprises an input reception portion for receiving input of information indicating the dependency between two requirements belonging to adjacent layers and of information indicating the degree of influence of requirements on product development, and dependency derivation portion for deriving the dependency between two arbitrary requirements belonging to the same layer from information indicating the dependencies between the two requirements in question and other requirements received by the input reception portion and from information indicating the degree of influence of the two requirements in question, based on dependency derivation rules established in advance.