An Industrial Process

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Hello,

I am trying to write a program which generates different outputs depending on the inputs (A, B, C & D) and previous inputs, this is fairly straightforward although my program has to work within a time frame interval (one unit arrives at the station every time unit) with this parameters:

Machine 1 must take 1 time unit to generate an output unit V.

Machine 2 takes 1 unit to generate an output W if the input was B. If the input was BC, it takes 2 time units and produces an output X.

Machine 3 takes 3 time units if the input was a D and generates an output Y, but 7 if it was DBC and it produces an output Z.

Machine 4 takes 5 time units and generates an output T.

This outputs will be queued and then selected so that the machine delivers a single stream of units.

This outputs unit must be generated every time unit after the program has started.

I am not quite sure how to approach this type of procedure, should I slow down the process so it meets the criteria or how could I affect time with C?

Thank you

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Posted 21-Aug-11 22:14pm

mariormp

Updated 21-Aug-11 22:25pm

CPallini

v3

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LittleYellowBird · Accepted Answer · 2011-08-21T22:30:00

Is this a theoretical (college) problem or one from the real world? Is you system based on a PC or an embedded processor? Are you using C or C++?

Since it sounds fairly complicated, if I was tackling it, I would work out what I wanted to do with a flow chart. If you need to perform events at particular times there are timer functions available in C++ for the PC, but real time events are tricky on a PC which is a multi tasking system. If you are using an embedded system this may not be the right forum for you as it is largely PC based, but if I wanted to control an Industrial process with critical timing I would not use a PC, I would choose a microprocessor. I hope this helps a little.

Best of Luck :)

CPallini · Accepted Answer · 2011-08-21T22:24:00

Solution 1

mariormp wrote:
I am not quite sure how to approach this type of procedure, should I slow down the process so it meets the criteria or how could I affect time with C?

It looks you just have to define properly such states machines: the output flow will be a mere consequence (and no, you cannot 'affect time with C' -if I got you-).

Posted 21-Aug-11 22:24pm

CPallini

Updated 21-Aug-11 22:25pm

v2

Comments

mariormp 22-Aug-11 4:58am

what you say is... i have to add a time variant to each case that develops with the previous and present inputs, that sounds plausible, again how could do that? I'm not very literate with C

mariormp 22-Aug-11 5:08am

where are my manners... thank you for your help