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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,
* B  T0 V! U. h/ t- h1 Y3 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.: T/ R8 o/ `7 z( X
  Loads are processed by each operator for the following time:2 ]- w" H5 P2 H! L; {# F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 n9 @1 {8 ^4 a( l4 P8 L& Z
  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.
1 k6 ^9 m8 ?. n  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  E! X" _8 P7 `) }  [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., Q0 g; w) q& B% ]
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问题:( K* |( g, @2 B7 ~, y3 N
After running the model for 10,000 days, what was the average number of loads in each process?+ ?& r5 @' Z3 Q6 h  C. @( a% @- u" v

9 F+ E/ Y; t6 u) y( Q6 B不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving( k$ W8 q1 @! l
move into Q_wait /*Capacity is infinte*/9 |# H) q! ^/ h: C9 j7 R1 K$ ?
move into Q_process /*Single capacity*/
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' t$ ~7 S: V: i' }- h3 n$ X. I: uuse R_A for n 60,10 min /*Resource A*/0 C, F& X1 i* Q( `) w- t3 a1 I1 j

% G  k9 D! R7 A4 O6 p6 A" fsend to P_B
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( f) ?4 l+ O! n; GP_B and P_C is similar5 ^% J( ?+ L; D' B
triangular 30,60,90 min4 p* b# z" `: j# T4 E
u 60,30 min
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in P_C, you need to send to die.
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  P/ ]1 I# e: Q" H* G. 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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2 ?* j) ?& q$ o8 d4 g( ~4 ERemember 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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