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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,' S6 X: D" k6 a5 T
  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., u+ |2 p! L" Y4 L2 `6 ]8 |; F/ E
  Loads are processed by each operator for the following time:
1 D  z" G' q" W2 H" M0 N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% l6 Y+ `4 L; W8 R$ M
  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 @7 g; ?  a+ V0 n
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ n7 E5 C, o1 A, P+ M5 G
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:. m# k$ h4 `  S; \2 z) f
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 arriving5 m8 V; E- L3 i. T, T
move into Q_wait /*Capacity is infinte*// N/ M8 i# m% S9 W3 l
move into Q_process /*Single capacity*/! b! q- o; M6 _- p2 y- t. z, F
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use R_A for n 60,10 min /*Resource A*/
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send to P_B6 A" `" T3 U) N( F( B2 I
end
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; y# Q+ |: Y' D* J* R! kP_B and P_C is similar! I+ W1 m  q2 b; c9 _
triangular 30,60,90 min
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3 J+ @6 X" P% ein P_C, you need to send to die.
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7 j8 {/ Z, [$ IThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& Z0 W/ ]* A5 z

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1 m) P5 K& G# I6 y; M9 d/ wRemember 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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