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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,
6 H0 e1 j1 z* o% x1 I  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.
" ?: z0 e' C8 b, T1 k3 v( I; _  Loads are processed by each operator for the following time:5 r1 ^: y$ n$ i+ G3 Y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 d: w+ p; |7 v1 \  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.
1 G% U9 ?5 F" ~& C. k  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: W! ?  d) ^3 U. e/ L/ iSend 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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1 p8 w9 ~( j" j# `, o3 ~6 x问题:1 V0 p; c, y! `5 N5 V- F" o2 t
After running the model for 10,000 days, what was the average number of loads in each process?
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+ @5 s0 y0 D$ X( P5 F' v不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! h: w; I# |* _! e. @move into Q_wait /*Capacity is infinte*/
$ n3 ~2 h$ M0 |. i: v: Hmove into Q_process /*Single capacity*/: h) |& J* t6 ?' @6 f* |$ h4 C) P; u  i
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use R_A for n 60,10 min /*Resource A*/+ m0 i  y, D) g
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send to P_B3 z/ j& \% L: o. A8 G- X7 K
end
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P_B and P_C is similar
7 C" d7 Y( @* e: n5 [! Wtriangular 30,60,90 min0 c% u0 V( u3 ~3 r/ a
u 60,30 min9 C: A3 N. P5 e% E9 e- L$ p2 H' |
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$ A( Q  T" n, [" N$ tin P_C, you need to send to die.: F4 g% F* ?( F8 _

$ F# }$ e- j) ^Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 A! Y+ }7 X+ C

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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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