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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,
1 _- G3 D9 o7 _0 s7 b1 y2 y. f% X  ?  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.
9 O3 r. n! ]0 G/ ^2 @4 \, o* ?  Loads are processed by each operator for the following time:
  J4 V7 c$ s; X" ~0 n+ l* r  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
, O$ ~: u  [8 S4 x. {  }+ _5 e2 ?  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.
+ V: O/ |6 E3 ?4 w3 ~5 v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ z4 J7 u% o) |8 X' DSend 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.$ ^9 M4 @+ M9 |

0 Y: W5 k% H8 F; F问题:
* j2 X7 M( i7 b' r0 a' |/ ^1 JAfter running the model for 10,000 days, what was the average number of loads in each process?7 O3 H- ]8 g: N

5 c/ B2 ~2 E3 o+ _" F% u1 r. C) }不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' c3 [; |( q  V) n# I0 h) x3 J
move into Q_wait /*Capacity is infinte*/: i7 d6 Y" t* t" r) x3 M8 N! c
move into Q_process /*Single capacity*/7 S7 t/ }& S: B2 m% D
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use R_A for n 60,10 min /*Resource A*/
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/ a* v5 A: h' ^; ~4 Xsend to P_B
8 L3 d! o. v4 t0 n4 |end
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P_B and P_C is similar$ {) g4 h" u/ [5 k3 O& r
triangular 30,60,90 min
# w: r0 b! v2 v0 i( I7 @8 fu 60,30 min
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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.
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( Z7 z% X# i+ x! ~2 uRemember 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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