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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,
7 |5 z/ i6 D2 g* I+ ]) h1 b  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.
1 E. y. k1 j# D  c  Loads are processed by each operator for the following time:) }  E; N9 z0 [! t, O
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 A! Z1 T1 m. g3 q) Z$ I
  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.* g$ A5 y9 B  q4 \) S# W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 m0 ~0 z8 h6 D" w% C5 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.# R0 Y- Q* x2 _! @: X9 c

1 j; P+ d; J) k2 J5 B* H: s  Q问题:: }2 B; w) ^! k, Q+ y# l
After running the model for 10,000 days, what was the average number of loads in each process?2 X1 [5 R6 u4 S9 {9 }$ Z- Q7 w# Y) }

, D8 Y/ `: f; |" }3 `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% Z1 b0 N* \) ?5 [move into Q_wait /*Capacity is infinte*/
( T4 o) |/ b! D# v' {$ J& F- Hmove into Q_process /*Single capacity*/
1 P0 |. [( q, k) z3 j# Z; J
2 E& g; t1 Z1 uuse R_A for n 60,10 min /*Resource A*/  `* W& C  b. h2 R( j; S' \
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send to P_B+ H* h& D' ~/ ~1 l
end
% J! T- \) m9 @% @& l2 e: E) o$ Z# |$ Q. p. I6 K1 E7 f
P_B and P_C is similar
' @2 P# ^/ M: b8 c4 O$ b% ], o3 S3 K! jtriangular 30,60,90 min3 ^, o, }5 G9 m/ L9 ~9 ~8 V
u 60,30 min" E, m0 {: i: `3 {7 }
4 b( T" Y7 O( Z4 L' H( j4 G. H7 z
5 D' i, X2 y8 r  j
in P_C, you need to send to die.4 F+ l) r* Y- D' L
; q9 A* ?* ?  ?4 E9 g2 X9 T% H, ]
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
2 K% X5 U& H! R& `3 Y) t& B! o. `; \6 k5 N) j
2 H# `9 T6 R+ G
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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