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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,
; v) o2 @" Q  j2 T6 B  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.
6 \0 |) E/ E! B- L- L% ^  Loads are processed by each operator for the following time:5 j- k/ J0 V. T/ }' I4 X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 \: H9 [$ G- G- g  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.3 i  S* g% Y: t6 [8 r& G% q6 P7 c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* A1 x7 l& |5 ?+ ~) v0 e1 P- Q
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:& ^3 c4 F+ M9 x% U# G
After running the model for 10,000 days, what was the average number of loads in each process?3 v% Q4 |1 k$ b& d! B4 {
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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
1 n8 o* P& ?" s& Wmove into Q_wait /*Capacity is infinte*/
. u2 x2 [$ ^& C" W, s& o( }move into Q_process /*Single capacity*/0 {9 ?; h3 t- Y/ A

5 i5 J1 M  N* [; I, q; z- e& |' zuse R_A for n 60,10 min /*Resource A*/5 U1 D( o1 F7 \1 s# q3 {$ R" \* z2 ~
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send to P_B2 A, u2 ~* D% W$ I: v% g
end7 f/ P3 ~# {( x! q2 j$ g" W+ _+ `

: _( V# J8 T6 m  qP_B and P_C is similar
0 }" I. s9 Q8 }! h6 X5 [triangular 30,60,90 min
; H' n: Z+ C- P# A) F- S9 {u 60,30 min
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- ~' T0 s: g6 R- H& p# Uin 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.1 Y5 l9 g2 B% z6 {4 Y% C+ i
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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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