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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,
3 o* D! Z8 M3 K9 p; y4 c  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.
/ [2 t  g* \3 R+ j  Loads are processed by each operator for the following time:# Z" ~6 q& D) d6 c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" U- Z# H  F4 c  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.
. k. E) R: n- L% _: |( A# L3 q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* U/ r' Y- Q) O% p0 {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.. I( b" k$ m! Y5 f% F+ ]3 S
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问题:5 y4 U* h* C9 n& ~7 n5 S
After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! [6 `5 C/ c  ^- ^) h6 o, Rmove into Q_wait /*Capacity is infinte*/( J9 P2 J  ~' ~; O: B7 R
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/3 R0 n) o: h" B
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send to P_B
/ V% y" I3 |: y6 [& Iend
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: l6 y$ ]- b$ J+ UP_B and P_C is similar
& f4 ]' r, i5 i* |! b/ p8 h7 Ttriangular 30,60,90 min  [3 ]* M% Z7 \& \5 w% K
u 60,30 min
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in P_C, you need to send to die.
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6 v0 j! L. @- y* Z8 H% aThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. l2 W( A1 V) U7 {

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8 ?* M8 A! }' U+ d) t5 uRemember 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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