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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,' `: u  ^: a6 D' E3 t# u
  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.; S% z5 N* D+ T: I7 t! b7 \7 o8 [
  Loads are processed by each operator for the following time:! n7 D2 ~1 v0 ~' _  a4 [8 w) g& o
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* D, [  \/ a3 ^. b5 y4 P5 ?  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.4 Q8 g$ L" t4 g- Y) \" h
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 e- z  H- C% ]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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$ W; B$ \* T6 d) ~8 Q- o/ h问题:3 [* O: v& C* i. \% A
After running the model for 10,000 days, what was the average number of loads in each process?9 l3 K1 V9 Q: X+ E

0 _- z) |% y1 \* w$ R8 a% p! m不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 x5 B- `5 b) C. y4 b  j6 O9 D; _) v
move into Q_wait /*Capacity is infinte*/
; ^8 Z. h# N. k7 v; d1 ^move into Q_process /*Single capacity*/) F, Y3 `# J! W; h' Y" C: o

& p4 ^' _# Z' Nuse R_A for n 60,10 min /*Resource A*/
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send to P_B
' r  ^8 o( E2 K8 \0 \$ {end
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P_B and P_C is similar+ y# U' i# c4 F: n
triangular 30,60,90 min
5 G* o0 o; r. [; ]! |% @+ P' K+ bu 60,30 min
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in P_C, you need to send to die.7 Q# d4 T/ a. f, o4 E

: D+ ^  s5 W5 j4 ~" f& K, V' Z: `# y0 HThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( w3 c, ]7 [6 g, q& K5 d" @

; `3 D! i+ Y, \$ Y6 k. \
' N5 ]7 w  V/ \: ORemember 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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