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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,' G5 T( m# V# ]: P) h
  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.' I" |; X0 K5 x$ a; p5 C1 S  H& ]4 d
  Loads are processed by each operator for the following time:0 `, P# T( O3 m# @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.' s( I1 V: j# h# s. u) h( i
  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.4 Q( y6 n7 z0 W& Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 o+ E* D" h3 |$ [/ i8 @4 [9 O  G
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.% l7 t3 C! P+ f( @

' \/ `5 v0 p9 `问题:( F  D$ R) T) v' \" K
After running the model for 10,000 days, what was the average number of loads in each process?
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0 L9 B5 O9 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
- O1 L% q. D" g- k! g$ C! `; }move into Q_wait /*Capacity is infinte*/, W! H" Q# r' {  v$ f7 N* ?6 Y
move into Q_process /*Single capacity*/. A7 }/ P# n; K/ m0 H
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use R_A for n 60,10 min /*Resource A*/8 @: k: g# i  r& R8 b
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send to P_B$ a  W9 q( r5 |- N. o
end, m% J9 \2 l  O$ N5 u$ I! Y
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P_B and P_C is similar1 `' x% z; D) `  y, b
triangular 30,60,90 min. ~& ?- u9 d- ]1 @4 `( I
u 60,30 min
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in P_C, you need to send to die.
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/ V1 V5 v. J7 [0 x# P& k( C5 L  yThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.! x) m( F  c2 I! k5 S' V5 N

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3 B2 [: A' _: t5 vRemember 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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