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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,; X' L$ Y* _5 h/ |8 X
  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.
4 T: x2 @4 T5 w  o6 T2 }  Loads are processed by each operator for the following time:
; i  ]; p# e- P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 t" o0 V' z# F) v! P  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.5 D; K' v! X# v3 N
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; U0 x% {& S; v4 s, \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.
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问题:
1 T2 m& [4 ^/ G, a, W7 x/ ^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 arriving2 V% e1 {2 k5 e/ r. _5 }2 V7 H0 i0 |
move into Q_wait /*Capacity is infinte*/
2 h5 {, S# W. j- pmove 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' B$ k2 L: ]8 d7 d: Q. u% s
end
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P_B and P_C is similar. M0 H5 J) `* i. b* u9 q# j
triangular 30,60,90 min
$ E  ?$ d7 j% c) ^6 Qu 60,30 min: V+ t) f( n& e
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* Z. I9 _5 x3 K# q, }$ ?3 ^1 zin P_C, you need to send to die.) o( o8 w6 g( D( C* i- {

0 Z5 z1 t' A' J. sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' G3 N, u* @  T, F) D1 y! @7 j

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0 p- a) G5 z, J1 ?! |' n% jRemember 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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