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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,
. p' m4 O5 @+ ?: g$ _  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.0 S" [$ J1 }( w
  Loads are processed by each operator for the following time:
/ {  v$ a. ^# j# J' O6 u: o  v0 `  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& F$ E; E* F" D
  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. i4 {# r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 t  g" a' Y# _% c$ @$ 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.; m$ V" E- n( Q' p4 K
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问题:% j  \  @2 C' p# q" E; r: p
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving3 s" z3 @0 D7 l2 ^' j+ @( O4 q
move into Q_wait /*Capacity is infinte*/( n7 s% e/ n/ M/ q! @
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/- D* Q$ R% R7 \. {+ g4 y

' k6 \. d$ f6 Z) B) G" z6 Csend to P_B
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P_B and P_C is similar0 ?7 h1 @6 s, W6 A* B  z! {2 N: y
triangular 30,60,90 min
9 y: k$ q* E  y/ ^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.% Q$ U# u/ q# @
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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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