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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,
' x( j( a& }7 v/ ?! |0 t  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.
  T8 |, L7 d' w6 r. u* ]  Loads are processed by each operator for the following time:
" G0 I% c( m& n( V; ^7 B1 N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 v8 C$ Q! Z: _  e( o) y/ i6 q
  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./ i' z  A. G1 j: F" E. r' U
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" P% {% a2 V) g  t, ^8 sSend 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:
  P0 ?+ r* L" r# }+ y5 KAfter running the model for 10,000 days, what was the average number of loads in each process?, [' f9 \" ]0 r

* H/ O( }0 L6 q* z' a不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ E: T8 D: t& _( h7 r2 E% Tmove into Q_wait /*Capacity is infinte*/
0 J- |' A" S# G/ Jmove into Q_process /*Single capacity*/
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0 `: Q8 O% P( s' R3 v* [# J" h- Duse R_A for n 60,10 min /*Resource A*/
/ ?. z" f/ T( e3 u$ @. j8 S
/ J8 ]& k& w  o; Y1 Psend to P_B
2 G2 Q1 `) i: ^5 Xend
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9 u$ v: r' c' l- {* f& [9 lP_B and P_C is similar! E$ B8 P, @* O! Z
triangular 30,60,90 min
7 p% K; g: H! `3 S+ g* n' ou 60,30 min" n% r2 A+ A  }" r( E& g0 f; _

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5 E; F, C( D$ Q  T" ]3 pin P_C, you need to send to die.$ G1 E1 f- \/ g1 ~6 J

, n5 B; @1 u3 T, |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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1 E: F7 O5 ^& S/ B# _# H) rRemember 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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