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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,
  w& V- L& P6 }* V5 C  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." z7 u( P- w( w7 }0 m1 Q
  Loads are processed by each operator for the following time:
2 H: G9 G5 r% T1 N8 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 ?5 X" M4 N; W2 _6 {
  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.
! g1 n$ a( m2 P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# ]6 u, h0 E0 \& k
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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5 Y( [+ ?5 ?' e7 h问题:
0 L. }* ?- D9 L( VAfter running the model for 10,000 days, what was the average number of loads in each process?9 N% K1 L- d! c9 z  t% e+ h3 b
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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: H, V1 C) F& ]9 H/ b- J
move into Q_wait /*Capacity is infinte*// p4 U# v  ~5 d, d+ q/ v
move into Q_process /*Single capacity*/. i7 k  D5 f% ^6 s  q3 }
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
$ e  K: @1 |3 K7 kend
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9 p5 F& {1 e- D( U3 d+ U* y4 V) _1 Y, {+ zP_B and P_C is similar
& x! i* l# r5 K) i2 `; ?triangular 30,60,90 min$ I8 c8 S; v! \- h
u 60,30 min
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in P_C, you need to send to die.4 `! q) P, a+ D0 U

( ^* M; `% p; d/ }4 L- p& r) [Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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7 Y; `+ T0 I/ ~+ W  [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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