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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,- G0 J  B! Z: n8 [8 W! H; U
  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.
1 G/ s1 y. f6 s5 @  Q  Loads are processed by each operator for the following time:- `# S8 f; h, u( q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ W! w; F$ x- s! o+ I  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.: Z; E& `; d6 E; Z& m) D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! b% e1 O1 K$ b$ z: a: BSend 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:/ `' b; K$ r; ^9 a9 f! r
After running the model for 10,000 days, what was the average number of loads in each process?# M5 a0 b" F8 E

/ q5 r2 |; Q/ i8 d3 G5 x4 Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving: I8 J. e$ T$ S- y* }$ Q, s; f4 ~
move into Q_wait /*Capacity is infinte*/9 Y3 H; S0 ?5 ~) u; B' k3 n
move into Q_process /*Single capacity*/
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8 `( Q1 `0 g5 O- wuse R_A for n 60,10 min /*Resource A*/
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send to P_B- u9 b9 W$ p' B! [1 i2 v5 d
end
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! V/ I  H9 }" sP_B and P_C is similar" C5 S6 l/ N: C' d+ j1 x+ g" y+ U# `
triangular 30,60,90 min! e2 v) m8 o9 P4 F5 ~
u 60,30 min# b1 H% s" S2 z  M' L
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% [# t. o9 a& i2 Tin P_C, you need to send to die.0 _+ x/ U4 r1 {( K

* @* d8 A( v6 b6 oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., @) @$ w& s8 k: \/ S/ `0 U

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7 E" c3 f2 L% g  I; u8 B8 F3 x6 bRemember 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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