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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,
( I4 m8 S: w" |5 z$ v$ q: [  M  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.
2 ^# N" @& L' a1 _  ?  Loads are processed by each operator for the following time:" ?8 O8 ^/ \( a4 d# E. O
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* h, S5 n4 N1 _( d4 q
  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.
. U& x  s  `: O  [  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) ?7 d) Y9 T6 N! D% L& xSend 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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6 f& @: r8 i1 y0 B& F$ U3 `& `问题:
& O7 r5 g% `! \! E# u; }After running the model for 10,000 days, what was the average number of loads in each process?8 \  h$ X7 S" m- k5 v

5 B+ p; w5 r: L- F; u不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, j) J3 D7 m" T; f( j* {3 jmove into Q_wait /*Capacity is infinte*/+ j% z% O! v. |  U% f7 D
move into Q_process /*Single capacity*/+ _4 ~$ D0 |8 `

0 J7 n. @7 I- c% p. x, W7 _use R_A for n 60,10 min /*Resource A*/; h6 w+ s$ E" L

( T9 X6 B$ Q" }" r' h2 d% |6 dsend to P_B
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P_B and P_C is similar4 ~# T+ K% U$ T8 T0 A* C; G
triangular 30,60,90 min2 m/ f, k4 Y1 I3 K3 n; A
u 60,30 min
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, K' H, x3 r+ F4 m/ Z0 [in P_C, you need to send to die.4 g4 j" v- h2 `3 i) B4 B  O7 z, w
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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.2 q1 d0 l' ^7 D" q# U. [3 W

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# f$ C3 K. F' ERemember 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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