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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,
; G( i, T; h* t  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.
# q" w3 Y/ a# ^% V1 E  Loads are processed by each operator for the following time:5 Z4 {8 e! B3 f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ S8 f' X4 ]) M  c) d
  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.# N* H& ~/ M7 m5 S) h/ O! _
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ W, t0 M, W! h# C+ w
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:
# C" o9 K* j0 Z  K" O' ^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* o# |1 U% K/ O% H3 t1 u
move into Q_wait /*Capacity is infinte*/
* l( h# S! J# j" Amove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/" V8 r' D3 _- f% l8 h4 c1 @( w5 N

, i5 M* s5 F# ^# m# Csend to P_B* M, u& ?) ]) W6 [9 i9 `) B- W. E
end( R" `/ j! O' g) M- z

7 {* d9 C' u: a3 O1 B6 |P_B and P_C is similar
9 V8 s0 c* T; {. C" Mtriangular 30,60,90 min
. g2 b+ X, `& P3 ~, _  ju 60,30 min; v9 S" d3 l& N! M/ [' x: b

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in P_C, you need to send to die.  h; `+ `8 t/ a$ d

, k; x, b- y5 hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.# s7 u4 R$ e2 D, [  |5 ~  `
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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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