Hello I have to do my thesis in a production line through the arena software and I have one question.The production line is about organic solar cells , as an entity enters one roll which through processes is cut into smaller pieces. The problem with the production line is that the probability of these devices being good ranges between 60-100%. I used the decide module through the 2-way by chance and I built an expression. The expression that I used, it was the Normal Distribution but it did not help me because I did get the results I want. I don't know if it is problem of the Arena Simulation or if I didn't write it right. Can you please tell how can solve this problem??
You cannot define a Gaussian (Normal) distribution to produce random numbers within a range, say [60%, 100%]. Gaussian distribution produces random values around a value, not within two values. Gaussian distribution has tails in both sides that are extended to infinity. Only Uniform and Beta distributions or similar ones can produce such values.
Yes I tried to do it with Uniform and Beta distribution, but I did not take the results I want. Because it never gave me the minimum (60%) or the maximum price(100%). Maybe because I didn't write correct the distribution. Could you please tell, how can I write it correct??
You must define the distribution of good and poor cells first. I suspect that the distribution is far from normal, with many cells being 100%, then many at 90%, fewer at 80% and so on. Then you must match this distribution with your own pseudo random generator in order to get the results that you want. In your case, try expanding the range of your simulated distribution to say, 150% and 40%, then truncate - anything over 100% and anything less than 60% is disregarded.
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