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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 ?# o6 @5 B9 G0 ]7 H% A- [1 _# l
  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.
! r1 N1 d1 o) X* P' M& I  Loads are processed by each operator for the following time:8 Y) t. H2 n" r; `/ K
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% H+ g1 E' {3 m, K$ C& W# d5 [& g  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.+ i5 V- x" |! F! E3 l: C- N
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& m% i4 t' ?, x
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." c% {3 N; S% f: O- |

& h5 X7 o2 a* P& P问题:
+ n1 @4 N8 J+ ^5 t: |After running the model for 10,000 days, what was the average number of loads in each process?8 W, E' V" g6 Z: |4 B% m5 Q5 D
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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 arriving0 v" E8 V/ U3 q# u0 J1 W  X7 n
move into Q_wait /*Capacity is infinte*/
& Q" a5 E( a- P" Wmove into Q_process /*Single capacity*/
/ \5 s1 `, t' C  S) B* c
( s: F6 K0 @1 N" W9 D# l: c$ Z9 [use R_A for n 60,10 min /*Resource A*/. R; r4 g% a- q+ X& i

% ~( w6 q  S5 a1 Osend to P_B- L/ m  q) Y! _6 Z  q( q; A
end5 U/ W- p: u! K8 J) h  w/ i, q

2 s9 I. W# h4 w3 XP_B and P_C is similar
$ q3 w: {7 k! c) v' _/ Q( G1 c% btriangular 30,60,90 min
- G* B8 d' U, q8 T0 v. c9 j5 r' X& U5 Gu 60,30 min6 o, Q: @6 ~! R7 x) y1 e' W

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/ ^- \* ~% A8 H" {) qin P_C, you need to send to die.8 }- x2 A" B- \1 Q

" c. p2 B/ O" x$ R: jThen 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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