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Custom DOE with linear constraints

Hi DOE cracks,

we want to optimize a process with a RSM DOE.

There are 6 continuous factors; 5 responses for optimization (mostly Match Target) and a linear constraint for two of the continuous factors (kind of mixture).

 

The constraint is:

 

10 <= FactorA / FactorB <= 20

 

Using the custom designer platform, we tried to add mixture factors or use a script for disallowed constraints but nothing worked so far. Using the script we got the error message:

 

 

 

 

 

 

 

How can we add this linear constraint anyways? 

 

Thank you very much!

DOERe: Custom DOE with linear constraints

If I understand your situation correctly, I think you need two constraints like this:

 

I think this will work.

Re: Custom DOE with linear constraints

Hi Dan,

yes, with this option it did work.

We should have tried it at the beginning...

 

Thank you very much!