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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,  [$ V+ `- C2 p9 c8 x; Z4 |
  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.
$ v2 K2 A! m' }* q  X; N( \  Loads are processed by each operator for the following time:* o( N& C) m0 o4 r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- K5 s# T& \+ ^* R0 ?; Z" k2 F/ X  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.
: d; N+ |; j" s1 A$ w' `! l  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; x" p; t  g: @
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:; z2 X. H6 H9 T
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* f* V+ L9 d% A3 [
move into Q_wait /*Capacity is infinte*/0 Y" W8 D' x$ d9 T3 g
move into Q_process /*Single capacity*/9 M) k  V% ?' {  J5 B# C

' V  L" P) ^9 C2 G* x0 R- P+ ~1 T* J7 puse R_A for n 60,10 min /*Resource A*/
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: J; J3 S# f7 q' n; N, Jsend to P_B2 Z/ d) B$ `; t& ]6 L5 V/ K6 {2 r* a
end
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3 s! ~* b8 c5 i. f# e" DP_B and P_C is similar
; |1 c; m3 R! c+ Mtriangular 30,60,90 min
5 x) w  n! r5 L+ A7 G! mu 60,30 min* k! }& W+ s3 w

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in P_C, you need to send to die.9 d1 n& k3 q, [/ ^7 e- H6 B1 \
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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., K/ I: t1 M& P; s! r

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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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