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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,! f' M) v" \* v5 z
  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& `- N7 E: ^1 Y  Loads are processed by each operator for the following time:
, X+ t+ N0 g6 Q; ^+ p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 @. z$ t' M: j# R9 G6 c/ `
  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.# R+ K/ d' D2 k6 o( T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. k2 {3 P" F" I# ~: ]9 t' O  cSend 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.+ X4 h' Y; V: B; u  h
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问题:
; }' v( l8 W6 g# ~2 qAfter 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
/ g' F* `5 @2 N( s6 c* t9 jmove into Q_wait /*Capacity is infinte*/
, `% K/ v+ T+ N# g/ U& {& i. emove into Q_process /*Single capacity*/4 _  L/ R! s! p4 ^

" o" u9 `% W5 a6 Juse R_A for n 60,10 min /*Resource A*/
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send to P_B& n1 [. ?' a% k1 m/ n% r$ C# [
end1 Z! t% J' G% K+ a) h* u
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P_B and P_C is similar, I+ _. J" g( M0 V
triangular 30,60,90 min
1 R7 v; l( X7 Y; p  Nu 60,30 min
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in P_C, you need to send to die." A0 ?& F( `% n5 u& D

6 X- B# h" ?, O' G( a# f; sThen 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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