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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,3 |0 L1 P& j: z/ g& S& p
  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.+ e  Y7 c( _2 z& i
  Loads are processed by each operator for the following time:9 U  C! D! d" v+ `- J6 M5 R# d
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# _9 n4 [4 d9 w& ^5 L  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.$ }0 \& x) X* p! v' {/ o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 _- }$ V* @2 ~
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:: P6 H! o: f3 N& K9 C
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
: m. ]3 m* }7 f; l  ?% xmove into Q_wait /*Capacity is infinte*/
) y* A9 Q3 F( d7 W  {1 Vmove into Q_process /*Single capacity*/
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' x3 V$ w6 e8 m4 x+ _/ W( Ruse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar4 m' ^1 L" j- u! P- q0 r
triangular 30,60,90 min
  r8 `. a& O( o+ [% @1 _( Y) Eu 60,30 min+ |" u* q5 a3 ~0 j% d
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7 n: }9 h1 W+ a/ `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.& C! [- e( n" D7 J+ ^* [
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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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