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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,. _! H! D5 k* j& o( B: W3 J. k5 k, H
  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.7 E: r' {! e5 o( C3 e$ U5 P" P
  Loads are processed by each operator for the following time:
  a- g+ H/ _" ]8 ^; P/ |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 w4 }+ v) l! i+ l; w) ^/ f4 Y4 y
  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.$ c; H  q. ^9 L% t( z9 q0 [
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 x/ q% O) F  a& x* W$ N2 K. y
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:
+ t+ O% D& r2 O( DAfter running the model for 10,000 days, what was the average number of loads in each process?) E, O% n- Y, D) y7 j7 z+ F' C# \9 p
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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
4 J+ i- j4 }1 C) r  C# rmove into Q_wait /*Capacity is infinte*/
% e6 Z  e) ?+ s: c9 P5 wmove into Q_process /*Single capacity*/' B5 B' _& G: }2 A! ]7 Y

( @- @3 a$ W, t, Z) yuse R_A for n 60,10 min /*Resource A*/4 n. T: F$ l$ t

4 p! R# l* l4 L! Y+ rsend to P_B( z& T) _  w. @9 b& w4 `
end
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P_B and P_C is similar$ F! Y8 \( `  f
triangular 30,60,90 min1 Q1 K. \# j1 w) x  l( S
u 60,30 min
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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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