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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,0 h# H* B) U1 \9 F9 S  O
  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.6 {; l" w% }2 T& M& G6 t8 U9 |
  Loads are processed by each operator for the following time:
  u0 \9 T! c8 e3 g  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 H- J8 n: X* E/ g; s- L9 B
  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.
  j/ M4 c: c7 y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 z( e: j$ s# r2 M: v2 Q! X2 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:
7 Y/ n, {9 q  a: s  @" ?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 arriving
) Y" I! y  h% A, bmove into Q_wait /*Capacity is infinte*/% R& J1 K/ `! o) U8 r1 r$ Z6 s
move into Q_process /*Single capacity*/3 }( S4 [8 F, D2 M+ [3 {
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use R_A for n 60,10 min /*Resource A*/, W. u! K* M# h

0 a- |4 |. b7 Csend to P_B
$ r: t; G  E+ U7 S0 W( cend
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P_B and P_C is similar
# l0 r# C% g. ~! T( Jtriangular 30,60,90 min
5 G# u/ ^4 P+ S0 _u 60,30 min
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8 N# [4 Y/ x- R3 V9 ?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.. K" y6 ^9 C* @! b7 Q7 z9 D) k+ p6 R

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8 _" [5 V1 I2 F: A0 vRemember 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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