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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,: z. ]) N& S! _" W/ k+ W, B: [
  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.) ^' m& w& U' x' f5 R
  Loads are processed by each operator for the following time:0 q! \4 a& v4 t% ^/ x; t$ K
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 z( Q8 @" T& m; ~7 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.( T4 i' B* g. ~0 W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." T$ M2 A/ {/ Z# M' Q" K  [# ?9 s  T4 R
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." z0 i- ~0 b8 K9 |. U. S

$ u) p4 x! Q4 ?; D+ {问题:
' i7 q. ]& L- @' TAfter running the model for 10,000 days, what was the average number of loads in each process?
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) p+ C% \* t* }) @$ y* z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving' O/ V# P7 D; r+ T. S
move into Q_wait /*Capacity is infinte*/
1 y* t% g, R9 T3 W  t' L2 @3 Jmove into Q_process /*Single capacity*/
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. z! S  j4 F) d9 V- s: `use R_A for n 60,10 min /*Resource A*/
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send to P_B
7 m  ^% Z8 ?4 l5 w  Lend: I4 r. i! x1 W  D- D4 [1 V4 V

& ]8 u% X% }+ P% CP_B and P_C is similar; x8 W. z! l. y1 l0 p5 n2 N
triangular 30,60,90 min
/ a" J/ k2 _$ A5 A/ @4 Z$ a, fu 60,30 min% w( O  Y' J8 I

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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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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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