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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,8 M+ S; y. E9 D& 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.5 u: s, ~, J6 t
  Loads are processed by each operator for the following time:* c1 c# X% c- \. x- L4 V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ R% C0 E- n4 ^: O% T+ N1 O4 z, R  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.
9 L  u& [, s, ~3 c  n% L  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; Z' g# l$ B& G9 H" l
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.! S0 f$ h) L5 N- J/ s- P
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问题:& ]: d9 N0 i6 G* W: [6 E% @
After running the model for 10,000 days, what was the average number of loads in each process?$ J$ A. o* k) i' D- y( v
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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  X, _' C% X; l: D' a; ^
move into Q_wait /*Capacity is infinte*/. B* ]  N% l$ M7 ?# b7 i
move into Q_process /*Single capacity*/
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, h  J4 q+ F  o' I7 Luse R_A for n 60,10 min /*Resource A*/- z" p: w: P+ w

( P/ ?; R% i9 P( @$ }send to P_B
+ O$ Q. m6 Y2 P" D0 }# a; ]end, |2 C( ^! x! V6 M9 d9 q
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P_B and P_C is similar5 @" a7 G; k; p4 }5 u
triangular 30,60,90 min
; B, \. j* {) `" x7 k1 iu 60,30 min& o! W& f  i0 o% v1 [0 G

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' l$ f8 l6 g) C/ yin P_C, you need to send to die.8 y' Z4 v5 \, l, W

' k$ D  d- e0 a: s: ?# ~Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' t5 w' ]8 v+ C7 U0 j1 i) ?$ N

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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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