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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,9 Q' S$ `% o0 w$ |; K' D, 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.7 n5 }, B. e( W# Z* |" L+ q
  Loads are processed by each operator for the following time:" F! ]7 n1 w5 @( D- n6 [0 b; M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 X/ @, l" i$ l7 v
  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., M: k1 B8 s! m" ?% D; k5 i2 c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 r5 L0 f6 C/ N! V( [' i0 z8 p" pSend 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.9 N: ^+ E, B: O

' j6 u4 E5 i$ S* p# {9 ?$ v问题:
  \- E% }9 r* m) O9 S: B: EAfter running the model for 10,000 days, what was the average number of loads in each process?; j% I1 b2 C; A+ x
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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
; r0 ^  Z8 s& p9 t% {( c" A6 zmove into Q_wait /*Capacity is infinte*/0 V% w$ V; [" \; j" v
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/+ v; g, ~, [& W3 q8 [1 I5 `7 r
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send to P_B7 \- Z( L$ {$ m6 F, p6 A3 W
end4 Z" H1 Y% m! \" p* o# w
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P_B and P_C is similar
' I) b* }( V4 E( v' \triangular 30,60,90 min& Y5 x; P, v- i5 U6 V! z, {
u 60,30 min
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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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& [- o3 c* p  L/ c5 R" {' \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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