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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,
2 z9 p1 ]1 u0 }3 v2 K# U! K  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./ B# U3 V: L& b! Z3 S- x6 _2 {5 q
  Loads are processed by each operator for the following time:. ?( T9 f: q# |; A6 @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 i; {5 C$ G+ l" g' A$ h: n
  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.  t; U! @6 B  t) `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." f9 `& D$ u$ @. 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.
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问题:
" c% R9 p  k6 m  Y5 JAfter running the model for 10,000 days, what was the average number of loads in each process?  g; i7 R  g7 Z2 O( ]
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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: L. r& T. T" w- A/ L
move into Q_wait /*Capacity is infinte*/
6 z; t' [# f0 W2 H! `  G, [: [move into Q_process /*Single capacity*/
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( l% V3 M0 a8 a) E! I0 quse R_A for n 60,10 min /*Resource A*/3 _$ S9 A: L1 U7 S
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send to P_B6 Z' e3 [* x) A* W9 `( Y
end/ O+ V6 v  I7 u" ?: |% B

( G! m: @5 u4 `; }  z2 s! W6 h1 SP_B and P_C is similar1 @7 O8 W6 C) j5 q+ m6 O( f
triangular 30,60,90 min% R+ K$ z9 ]& L9 P4 u1 W" V
u 60,30 min0 n) _! v( Z2 G

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in P_C, you need to send to die.
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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.
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' b1 F, v7 X/ l: W: `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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