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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,
8 m$ G6 F- D. R' X( Q  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.
+ X' a/ i# C# D6 w+ H6 l  Loads are processed by each operator for the following time:* j1 y. \% U1 _5 G6 W+ B
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; J/ C! v  |* r+ ~$ F. ~% t  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.
, H3 T0 }$ n7 ^$ J- E' ]6 ]$ x  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' Y% ^) I: g/ n7 U( }5 @
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:
& f; `! K3 ]8 R  J* AAfter running the model for 10,000 days, what was the average number of loads in each process?
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+ u4 s8 w$ u/ A5 U4 _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ x" Q3 L+ a  u* |move into Q_wait /*Capacity is infinte*/1 i1 X+ i, O, J
move into Q_process /*Single capacity*/2 C$ k  ?. W& A0 O; a. P0 R

+ E+ p7 c/ P- Guse R_A for n 60,10 min /*Resource A*/. K/ j4 N2 X* C0 f+ n& i, T2 m8 ?

1 Y4 V4 K( C! p" \send to P_B# g& e! S4 X, K/ f/ E7 j; }8 o  f
end
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P_B and P_C is similar8 E# S# G' M! `1 C( M( ]
triangular 30,60,90 min. f: p: e! ~3 h5 r2 G
u 60,30 min: }: W3 s* L4 G$ V/ h/ {* z
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* p4 z7 e# V2 t0 \2 D  z) lin 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.! v- F% ^0 A1 @$ j& |

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. {6 L; |4 Z- [: A) q( 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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