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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,
3 I3 M  w0 [, F! 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.
8 _6 K$ X, n( ^- M8 i. t1 y  Loads are processed by each operator for the following time:- k% _6 q8 P1 E3 ?
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ x; b0 O+ d2 J  v  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.
% ]/ N5 R8 V% A) w  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; j2 g2 {% [3 P3 HSend 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.- x$ u7 O* M: g$ f  y7 e

1 e/ {4 M' Q( K, Q/ m/ a问题:
; J! @* w/ c' YAfter running the model for 10,000 days, what was the average number of loads in each process?
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; e! `0 h( F8 D6 \9 O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  M0 I$ u% s3 F  Q) T2 r9 Lmove into Q_wait /*Capacity is infinte*/
! m0 d9 O$ X, ~, _0 Nmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
6 J: b. V5 S$ _1 r. n  Aend
& m$ I# _% J4 o9 _+ n0 q9 J+ L0 M/ R  ?5 _# p& ~9 A
P_B and P_C is similar
  ^. V: e: ~3 Z* Utriangular 30,60,90 min2 y) m5 k+ I- [' N) P. K
u 60,30 min
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in P_C, you need to send to die., }: H) o! Y0 L( n

3 T' }) h' w! sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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: c  l* n/ k( y: t0 RRemember 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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