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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,% A8 t- i( ?2 E! k, y! 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.) @/ ]$ g0 u: H$ e' p0 D. m
  Loads are processed by each operator for the following time:
! f8 O1 |$ x( w% p' d  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ @8 Q% {2 u% Y( }4 r
  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/ @% h, Q% f/ f2 i4 `/ e0 G6 m+ c) b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 h. v  l" p& B
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.! f) b% O- h0 P: ]: [, S
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问题:
4 ?4 I! V/ w# U- jAfter running the model for 10,000 days, what was the average number of loads in each process?8 k0 d3 @+ A/ |" Q* k% [" n

5 _- S  f: D: o9 {; V, Y, \, ~1 W' k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
. a" k0 {* l1 G  V. Bmove into Q_wait /*Capacity is infinte*/
4 ^6 k6 X$ j" Z) ^( emove into Q_process /*Single capacity*/
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. {: |! S# o5 ^* o6 Euse R_A for n 60,10 min /*Resource A*/* k0 ~9 n( O$ k
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send to P_B) ?: J) O. Q6 ^  ^6 T; V8 m. q
end
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P_B and P_C is similar" j! K, V% |+ r
triangular 30,60,90 min( W3 T  d' f! l1 a. F
u 60,30 min& n$ h2 M" O" L6 Z% V8 k
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in P_C, you need to send to die.
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. z7 v( w( n* P4 M, v: Y5 a  qThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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2 {' f% E3 S! q8 w* E9 R8 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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