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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,' n1 b, V: o8 r+ 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.
- {' ?' }/ _. H9 _7 M- Z  Loads are processed by each operator for the following time:
+ }+ k/ E7 f; X6 Y3 t% ~  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 F) E4 a2 p% x& d
  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.
- h7 i; }% @' h* O1 J- ^; A& N& ~  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: h, A; k0 z  \9 k
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.& q) o; h5 X7 \0 }) r
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问题:3 t& [: e, ^) @9 U
After running the model for 10,000 days, what was the average number of loads in each process?4 D% X/ Y( `1 U1 k5 b
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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
  ^: Z) A5 b9 V6 ^move into Q_wait /*Capacity is infinte*/
' b; h+ u* _2 a# J* Rmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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$ L% d8 n: O! Csend to P_B4 L5 z" G: ~) g& \  E" l
end/ ^+ T4 ~. Y0 e  p# |8 i' V- {

, v& H6 `/ l/ pP_B and P_C is similar) p3 {/ H% C" S6 s4 D1 n
triangular 30,60,90 min% I% f1 M# y/ s/ W
u 60,30 min3 \& ~3 f& H4 ?- G2 z" M: |: @& _
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in P_C, you need to send to die.
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# \' k$ c9 S9 Q; _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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- D" U5 ~, N" F9 V; J5 _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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