Program different work flow

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Abdelillah AY asked Nov 23 2018 at 6:43 PM Clair A commented Nov 24 2018 at 6:06 PM

Program different work flow

Hello,

Fisrt, i want to thank you guys for helping my during my project.

I have a problem that is to model 3 different work flow with the same product and same machines; for exemple.

I have a product that has a probability to pass in 3 different process; Process "A" with 50% probability, Process "B" With 45% and Process "C" with 15% probabilité.

Now i have for exemple 2 machines and one source.

If the first product pass into process A. the processing time of machine 1 should be 100[T]; then it passes to a separator, it splits the product to 2 ...

An other product "in the same family" coming from the source if it has been picked to pass into process B. the processing time of machine 1 should be 50[T]; then it passes to separator it split the product to 3 ...

I hope you have got my point. thank you

Software Version:

FlexSim 18.2.2

process flow code simulation FloWorks c++ and user commands

· 2

Answer 1 · 2018-11-24T08:32:17Z

Joerg Vogel answered Nov 24 2018 at 8:32 AM

Is your probability the frequency the product become to be part of process A, then maybe B, then maybe C and finally not a Process at all and get deleted?

Then I would use a dempirical statistical distribution. For each different probability I use a single dempirical global table - 1st column the probability in percent, 2nd column the logical answer true or false as 1or 0.

Depending on the logical true in a conditional decide I make the product to be an item of the process type A, B, C or nothing at all inside the OnCreation trigger of the source

int itemAssigned = 1;
item.labels.assert("Process","none");
if(dempirical("globalTableProbabilityName",getstream(current) && itemAssigned)
{
  item.Process = "A";
  itemAssigned = 0;
  // assign additional labels like outgoing port, process times and splitting value to more labels
}
// next conditional decide to choose if the item becomes a B process type

If you choose later to use the switch - case structure you should think of to assign numbers instead of characters or strings as label values.

Otherwise if the sum of all probabilities is 100 then you use a switch -case structure directly with a single dempirical global table. The statistical dempirical distribution returns 1,2 or 3 from the second column of the global table.

switch(dempirical("globalTableDempircalName",getstream(current))
{
  case 1:{
    // setting labels for process time, split value, ..
    break;}
  case 2:{
    // setting labels for process time, split value, ..
    break;}
  // and so on
}

Then you can use the label values to send the item to different output ports, set the process time or split the item in separators.

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