Applying the TRIZ Contradiction Matrix: From Engineering Conflicts to Inventive Principles
How to convert conflicts like "stronger yet lighter" into queryable parameter pairs and filter inventive principles into executable actions.
Step 1: Convert the vague requirement into a technical conflict
A technical conflict is defined as "improving parameter A worsens parameter B." "Strong yet light" is not a conflict statement; "increasing structural strength increases the weight of moving parts" is. The former cannot be queried; the latter maps directly to improving and worsening parameters.
When resolving conflicts, use the closest of the 39 universal engineering parameters instead of inventing names. Parameter mis-selection is the primary cause of matrix lookup failures.
Step 2: filter inventive principles
A matrix intersection typically implies 3–4 principles, but a suggestion isn't a solution. For each principle, ask: Is there a known implementation in this industry? What additional resources does it require? Does it conflict with existing process constraints?
After filtering, typically only one or two concepts warrant further development. Documenting the development process is more valuable than memorizing principle counts.
Step 3: Differentiate from physical conflicts
When a single parameter must simultaneously satisfy opposing states (e.g., "temperature must be both high and low"), it is a physical contradiction. Resolve this using separation principles (in time, space, condition, or whole vs. part) rather than the Contradiction Matrix.
A common mistake is forcing a physical conflict into a technical one, causing the system to return irrelevant principles. Identify the conflict type before selecting your tool.
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