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can you define a distribution in a table

Experimenter
Experimenter

Is it possible to define a distribution in a table for the processing time in a singleproc. I am currently using a table to to define average processing time for several different parts but I would like to give each part its own lognorm or normal distibution. If a table is not the right way to do it what would be?

5 REPLIES

Re: can you define a distribution in a table

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Yes it is possible. Normal distribution needs some parameters: Stream, MU, Sigma. Lower bound and Upper bound. You have to define this values for each part in a table. To set the value of ProcTime you can use the option Formula. You can access the MU with @. If you set the MU names a row-index in the table the formula could look like this:

 

z_normal(procTimes[1,@.name],procTimes[2,@.name],procTimes[3,@.name],procTimes[4,@.name],procTimes[5,@.name])

 

Look here for an example (Version 11):

 

Steffen Bangsow
freelance simulation specialist  
web: www.bangsow.eu
mail: steffen@bangsow.net

Re: can you define a distribution in a table

Experimenter
Experimenter

Oh, thats easy. My approch was all wrong thank you.

Re: can you define a distribution in a table

Pioneer
Pioneer

How would we expand the example you provided to have multiple singleProcs with different mu and sigma?

 

Say i have Op1, Op2, Op3.

Re: can you define a distribution in a table

Phenom
Phenom

For instance by selecting "normal" and adding individual parameters (mu/sigma) for each station

 

 

Unbenannt1.png

Re: can you define a distribution in a table

Pioneer
Pioneer

The table containing the mu, sigma, upper and lower bounds will have rows for each Operation with specific mu and sigma.  I have attached a picture of the table.