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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,
& _8 W" Q. g5 F- Z3 w  f6 P  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.9 M4 }1 y4 K0 N/ z4 H
  Loads are processed by each operator for the following time:5 M8 Z0 C/ G7 j: C$ y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! z+ _  v9 R. ]* M; ?8 t' H0 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.5 q- d3 m( M& c7 P
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 _/ D: N2 g8 W- x* ASend 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:; |, L9 g: a5 W! ]0 s; 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
& P$ Y/ H0 O6 Fmove into Q_wait /*Capacity is infinte*/
" C( r* A2 G: |! [move into Q_process /*Single capacity*/
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: ~, [+ L. a4 l  T# puse R_A for n 60,10 min /*Resource A*/6 p$ q1 a' J# R, ~

4 A: Z- f2 e4 l( t  c6 Ksend to P_B% `. t. B( b) A3 w8 w% h
end
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P_B and P_C is similar
" }& `# _3 u! u+ L4 n7 `: I2 ]triangular 30,60,90 min
3 z( C6 G( z0 e! n: Ru 60,30 min
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in P_C, you need to send to die.
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. _  n; n# K, \5 ^% wThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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