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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,) C3 v. }7 `4 ]5 A
  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.9 z8 M, X0 l9 Q3 g0 }
  Loads are processed by each operator for the following time:6 O2 G  c: v" i# Y( e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* p/ ]+ v! {+ x: D! P, h7 b2 }
  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.  G' X7 f( G. f/ {( I  t3 B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; p2 `- f# t- g. Y: L1 k  OSend 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.) j& N/ h+ C( }: |
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问题:
& ]) b, v+ c1 s- qAfter running the model for 10,000 days, what was the average number of loads in each process?2 ]( ^: I/ _* p. h

3 ]$ a) ?. x9 R% g3 t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
8 p( H+ C, h0 n) B( X, e, dmove into Q_wait /*Capacity is infinte*// u: I2 p2 U* o5 i) V) @
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
) L9 O+ d- r# B3 @% D, m0 Uend
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3 Z- G+ p4 ~5 `1 o. o+ D/ YP_B and P_C is similar) x! \' d% c' R
triangular 30,60,90 min4 U; A$ Y0 h, D9 [: g4 V+ l/ a) ~
u 60,30 min& v) K% \6 |1 K/ G( v
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! i7 A9 J& C" m2 `  N/ m- din P_C, you need to send to die.4 v' w. [: r! v/ u, P5 |
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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.. G# p0 ?+ ?. U/ ?

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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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