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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,7 N& g2 ^  n3 g3 r9 o( E/ M
  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.* o) f$ f! Y# o8 V, S
  Loads are processed by each operator for the following time:
. s1 F( K" w  g) y5 }8 L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ j# S) d, ~3 d- l5 D1 n+ P( w  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.
7 y& j/ X; Z& N7 j/ j  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. k# h1 x& @9 V* W/ R3 T- b& ^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.! U, S8 o+ z  M2 @6 [/ b6 v3 l, O
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问题:% p1 u+ n7 N& \$ E7 a$ G- }
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; }4 D: E8 i7 {" G4 W  J
move into Q_wait /*Capacity is infinte*/
6 e# _1 l) w, G6 w* E4 l$ _- v$ x( Wmove into Q_process /*Single capacity*/5 c' D3 G1 W8 U' f* k

% B) i2 s$ f- l$ Quse R_A for n 60,10 min /*Resource A*/
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9 G: }( o9 `% _send to P_B
+ _1 z' E/ R- l# A4 K4 o/ m& J) ?end' P  A$ r* o% ?5 w8 a) ]
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P_B and P_C is similar
8 H" y0 N4 |. @$ `triangular 30,60,90 min, ^% f" D2 x8 y+ e+ q2 j
u 60,30 min
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in P_C, you need to send to die.% i/ @% p% D+ V
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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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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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