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Posted by: Grant Blair
Posted on: Wednesday, 20th June 2001, 12:00 AM.
Saw a reference to Taguchi methods and thought I might make a run at shaking the branches a little.
(DiBono says that if you can get a squirrel to jump from enough branches, he will eventually realize there are other trees out there. If not, then the squrrel thinks his tree is the whole universe};-)
Taguchi theory says there are two types of variables which will define a system:
1. Parameters in which level affects process variation.
2. Parameters in which process variation is unaffected by level.
The idea behind robust design is to set Type 1 parameters at the level which minimizes total process variation. Type 2 parameters are used to control and/or adjust the process.
Can we assume from this that Taguchi would define a stable process as "robust"? that is,
levels are chosen which will maintain the process "on target at minimum variance" as per Wheeler's definition. Does this imply an truly stable process would self-correct?
Message Thread:  | | Paranoia by Kim Niles on Friday, 22nd June 2001 |
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