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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,5 t! x9 S. b! |) J, S' 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.
9 `- s3 x' K8 Y; O! v0 ^1 L9 w; ?  Loads are processed by each operator for the following time:% L/ Z( u0 z2 S# J% D
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) T' ]# W% e) ^1 U7 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.
- \4 y3 V0 k: b/ N1 J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 u7 k! ?, Z7 Z* f" W( a/ o
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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问题:
7 ?4 f. l$ t: j8 ZAfter running the model for 10,000 days, what was the average number of loads in each process?9 d: y5 Z' H! M. r! y9 w( o
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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 arriving1 c( R4 T* g" `5 [2 O
move into Q_wait /*Capacity is infinte*/+ P: s, V% H9 ~% H1 y. `
move into Q_process /*Single capacity*/4 c4 s3 x) |: U2 n! G

6 R) b& ]3 l; g; Ouse R_A for n 60,10 min /*Resource A*/1 ^# u) S1 G) d$ h( v. ]$ V

0 x3 t; B" q  {! D* Nsend to P_B6 R9 r. W0 @/ g
end
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) g4 M' n3 y( b1 y3 [, r# J0 LP_B and P_C is similar5 h% x" a1 S, G% o( X
triangular 30,60,90 min
4 A$ Z( B. p) y) w: P1 Lu 60,30 min, O2 {2 q7 l: F8 p3 ?
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& `" m9 t2 \5 ^in P_C, you need to send to die.: k: Y$ @( h$ O8 z
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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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3 A& K  t7 z+ G! ~2 r# {: bRemember 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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