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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,
* o! Z7 y1 d( ^' R+ e  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.
' l9 g7 x. D9 t/ i* n& C( R  Loads are processed by each operator for the following time:7 }+ `* T% L, w: S/ J* m- L8 n) p
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) h* a5 _) J* _& Q  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., ~' Q9 ^2 E6 ^$ w  l8 [
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." m3 o$ A3 |0 C& c: l9 N
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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- u$ p9 ?4 ^7 H# G$ Z  f问题:  m1 k+ ^. Y) C, M/ d, Z
After running the model for 10,000 days, what was the average number of loads in each process?5 A# f! X% Q0 ?. X" L8 X6 [( \

6 x1 w* ?+ a* y0 s6 z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving; k4 X2 J; w7 A% a( \. z1 @4 O6 k
move into Q_wait /*Capacity is infinte*/8 s5 q! C2 @/ i7 T8 \' }
move into Q_process /*Single capacity*/3 T/ k6 ^) W! I1 X# k* \0 X

3 ^/ C& _. l& w, m9 k. y4 xuse R_A for n 60,10 min /*Resource A*/+ h1 d2 P* o( w& N$ |- |9 U* W4 {

8 p. e4 }+ k0 t3 M7 j$ `7 A8 e' ~5 Y5 w1 Bsend to P_B, t/ Q1 ]8 P0 P5 `
end0 d. T9 d3 C; ^6 ~

7 f: k+ x: p! n2 |) j! SP_B and P_C is similar
4 O- Y4 P, _% v7 e8 btriangular 30,60,90 min
4 n! X% i0 C$ Ku 60,30 min" s7 f  F: ~7 |' k, v2 [" K  H  U+ o
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in P_C, you need to send to die.9 j0 z7 G6 v0 d  O5 j9 O
$ H9 H8 ~' k/ [, l. L+ V% o5 }
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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3 P- T) d$ i+ Z. b( n; NRemember 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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