# Dynamic DOE

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• #38011

Anonymous
Guest

If anyone is interested in dynamic DOE, this website in Japan might be of interest:
http://www.qes.gr.jp/english/whatqe-e/whatqe1/example.htm

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#113186

PB
Participant

Andy,
Interesting information.
PB

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#113187

Anonymous
Guest

Hi PB,
I know you’re interested in this subject. If you would like an exchange ideas on the how to tackle a problem with four ‘steering wheels,’ then feel free to contact me.
Best regards,
Andy

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#113192

Chris Butterworth
Participant

Hi Andy,
Would you share the steering wheel method of problem solving with the rest of us on the isixsigma web site? Or provide a link. I’ve not heard of this method before.
Thanks
Chris

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#113194

Anonymous
Guest

Chris,
My apologies for an oblique reference to the problem posed by Deep. I tried to take it off line because I did not want to take up too much white space with what in essence is a Taguchi approach to solving this problem.
I believe that an analogy for Deep’s four screws corresponds to a car with four steering wheels – one for each wheel. But in order to reduce the problem to that of an ‘ideal function,’ it is necessary to modify the way measurements are taken. It might also be further complicated by the camber of the road so that the four steering wheels are not independent.
According to Taguchi, differential measurements have low energy (negentropy) and a first step would be to refer all measurements to a ‘datum’ on a measurement jig. My approach would then be to attempt to construct a linear relationship between the displacement of the bar from the datum and the distance around the bar. If successful, then each screw would correspond to a signal factor, and the response would correspond to an ideal function (ideal component response.)
My interest in this problem arose because I think this example would provide a simple classroom exercise to demonstrate a dynamic DOE.
Another approach to this problem – an heuristic approach – might be to conduct a jig with a in-built distortion which can be relaxed by successive grinding. Of course this approach would require that there are no other sources of variation in the process as pointed out by Mike.
Regards,
Andy

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#113205

PB
Participant

Andy,
Good to be in touch again. Last time I got into Taguchi (from exchange with you) DOE and have started using the Taguchi DOE in the Minitab*. As I am currently having a lot of DOE experimentation for multi-cavity molds, the dynamic DOE idea sounds interesting.
Can you please highlight how I could incorporate this in a multi-cavity mold (thus multi-stream process)?
You probably have my email. If not, let me know.
PB

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#113206

Anonymous
Guest

Pb,
Cheers,
Andy

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#160270

arul
Participant

Hello Andy…
I am Arul… actually I am working on a research project to develop a prediction model for software services… as a part of that I am planning to use “Dynamic DOE” to find the significant factors… can u pls share some worked out examples or some concepts related to Dynamic DOE? Also I want to know “Taguchi Design” and Dynamic DOE are same?

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