Page 364 - Design for Six Sigma a Roadmap for Product Development

334 Chapter Nine

New System

Infancy Growth Maturity

Performance

Effort (Time)
Figure 9.6 S-curve for two generations of a system.

■ Nonuniform development of system elements
■ Increasing the degree of dynamism
In our TRIZ problem solving process, if we encounter a problem that the
current system is able to deliver useful functions and there is no appar-
ent harmful function to eliminate and no contradiction to overcome, but
the system is no longer competitive in the marketplace, there is an
urgent need to enhance the performance of the system. We can then use
the ideas in evolution of technological systems to generate improvement.

9.9.1 Increasing ideality
TRIZ states that the evolution of all technological system will proceed
in the direction of increasing degree of ideality. Recall the definition of
ideality:

∑ benefits
Ideality
∑ costs ∑ harm
In other words, the development of any technological system is
always toward the direction of

1. Increasing benefits
2. Decreasing costs
3. Decreasing harm
There are many TRIZ techniques to increase ideality.