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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,# X* t/ n; N7 L2 }
  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.
0 I8 c+ I% s% k' k, @  Loads are processed by each operator for the following time:
. s3 z- y1 J, u2 u! e2 d  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." z3 P" w* |6 M
  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.. L9 H- O' q; A* }1 Y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) z* X8 ~- M: {. V9 N
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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问题:9 L8 C0 ~" }+ _. K9 U3 ~
After running the model for 10,000 days, what was the average number of loads in each process?
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0 Y' }" T7 o5 }不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& V5 y0 `9 ?/ W8 [& Z( K3 n/ Dmove into Q_wait /*Capacity is infinte*/
8 q4 M9 c# N+ ^# o+ Wmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/" v' ?/ A2 r4 t3 r9 \

+ V$ n9 s# q2 |: b# S1 B+ R. usend to P_B# D0 _# l: y* \$ L8 p( K; H
end
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P_B and P_C is similar
' ]2 a$ P# ~3 atriangular 30,60,90 min9 v) e* w# x% A8 r1 b
u 60,30 min! j3 K: j, @6 d1 {- i; u0 }5 _; y

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in P_C, you need to send to die.* S. i3 P- `4 f8 D4 r' A
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ [2 M) k7 l2 b
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Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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