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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,5 p4 C3 E  K$ M, _, d, O
  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.6 ~( U9 J" F2 ]! m) H
  Loads are processed by each operator for the following time:6 p3 H6 ?4 k# R' H# F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ H3 s8 m1 g" c8 C" B8 Q% z
  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' c: c- v  p! s& N; u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. y# c; `# {2 ?: o
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.4 k7 `  ~- S% K3 b( l) `

. a! e( e" m9 C& C问题:& ?5 I' e) X7 B# ?' S
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving
2 t; c  r, T9 Ymove into Q_wait /*Capacity is infinte*/8 C$ h  `' b4 B9 ^. C6 ?# z3 U+ n5 w
move into Q_process /*Single capacity*/0 L0 f) r0 K6 d2 s- U; K' X. C

5 o  g: X# `7 q) F3 s, tuse R_A for n 60,10 min /*Resource A*/+ r! h  b. m$ n" D' C

3 S  {+ K4 W( G6 u& D; ssend to P_B
0 _( W3 P' o9 l# |end
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0 ^, T- R5 w0 I  w3 w; \P_B and P_C is similar, |2 O5 q/ N# C  X% G/ K
triangular 30,60,90 min0 M4 L& }/ k1 v5 `: F  |7 K
u 60,30 min3 C0 [' L9 f6 @5 u. B! n& |

  _5 e. u8 v7 _- E
# y- M, ~6 V3 m# J# tin P_C, you need to send to die.
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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.
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9 R& J# f: x4 \) G' @, tRemember 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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