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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,
" ^. ?  Z5 b& ~) y/ N1 |7 F! A  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.
: u7 u$ t8 A( Z5 V3 A  Loads are processed by each operator for the following time:
9 _! T, s! ?$ _2 A8 H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. a- W- l' v9 b6 s# a5 Z% _
  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.
8 w3 \& }5 t) J+ ~3 {, I: I$ [  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) c" Q8 d# Y$ S2 E) bSend 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:
$ b- @' j: ?% XAfter 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
. \0 P. P! c5 D, K* Y7 rmove into Q_wait /*Capacity is infinte*/
4 G8 W7 K# E, Imove into Q_process /*Single capacity*/9 [0 Q; @, i9 K6 v( M' E0 [# e! [' y
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use R_A for n 60,10 min /*Resource A*/
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) I/ V' K" m) k% ?send to P_B" V) J. i& G8 B7 Y9 D1 E
end
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P_B and P_C is similar8 A$ O  `+ S) c9 W2 M, c
triangular 30,60,90 min$ t/ Z7 ]2 i9 D! [- E- Q
u 60,30 min1 l8 |) w& D3 p) Q: K; _1 E$ `

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in P_C, you need to send to die.. x9 [3 @4 T2 B, H6 `" R
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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.
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+ B: i; }) M# E/ n8 v- }3 |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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