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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,* d: }9 o2 `5 x& p4 @" @( ~
  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.
7 V+ t' G! }; M% ]1 W! L  Loads are processed by each operator for the following time:, I& Y3 P5 S" }/ K2 n. T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. [* ?+ q8 I0 S% K6 U
  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.9 C7 y6 A# X3 _' M
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 l5 }  {* F! y' m4 rSend 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./ ~$ o: ^4 S6 L. N8 `
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问题:
! T0 L9 ~9 V7 R8 rAfter running the model for 10,000 days, what was the average number of loads in each process?1 S  ]6 \- C/ v8 a& ]# s

& v+ f0 `+ p: J. T* a) Y9 n不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 t/ E/ s) c" |" u+ hmove into Q_wait /*Capacity is infinte*/
: B0 w; r5 \3 vmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/* u9 v5 N; |# x% y2 s

  w( J4 I: h; H) n9 [send to P_B8 `+ B, X. ^7 W5 }5 G2 C6 B. Q1 v- O
end" X. S6 H7 a4 f/ z7 b

8 N! o5 S9 ]4 t5 H/ o7 mP_B and P_C is similar7 q8 o: _* _1 f( f" k' N
triangular 30,60,90 min$ q) J6 ^: F# Q" P) ]3 p* f
u 60,30 min6 f. U0 q  M  _; b
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in P_C, you need to send to die.
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: p  f- F+ P2 _- h4 [$ GThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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Remember 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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