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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,
( k- W+ A+ d* F2 t% K  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.0 e1 B% s2 s7 e/ }, E
  Loads are processed by each operator for the following time:
$ k9 s. H: E& j( L1 @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." C% x) ^3 G# E2 K4 u8 E
  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.; z$ m$ R  N) t$ S6 k- p# _2 T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 J6 t  B  M+ {% r: m4 i# M  z: ~
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., U* k, S$ K& X. f" b) Z, I
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问题:
# t8 j" y: ~, }' V+ ^6 z3 ^9 Q5 jAfter running the model for 10,000 days, what was the average number of loads in each process?
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- z3 O, t- _8 T$ a/ D( Y6 L+ q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* w# {6 ?) I4 |7 n) W
move into Q_wait /*Capacity is infinte*/0 H! u* T: `+ z' p  O& u6 R/ {
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 ?9 j4 D* G7 _: o! u: w, Z* H

2 P6 ]( ]' a" n6 w0 `  l2 tsend to P_B
5 H3 l9 {; }0 i# Y4 l' Dend
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9 |2 R7 S$ q- x, MP_B and P_C is similar- N4 w: F) |$ b9 d; g; Z1 b9 z
triangular 30,60,90 min
7 a2 ?4 \2 m$ ^9 {u 60,30 min+ e6 v! a+ `" t! L$ Z

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in 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.  B& T, ]# b8 N

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* _/ R0 n! n9 i. dRemember 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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