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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,
' b4 }# H/ b  T) C  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.
; x# e' Q( H( l2 b& }  Loads are processed by each operator for the following time:
0 @8 V, a& v8 T2 b( q, @0 F* f' p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& j% K# ?% t# I5 r+ u$ `
  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.
# K8 M; t7 [9 e6 @9 J: p8 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) k7 j7 ^- S5 x; M! q" K7 C: F+ L
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.# f. h% l' J/ Y! a% ?! g6 v: X
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问题:
6 Z$ M3 M" r, q8 KAfter running the model for 10,000 days, what was the average number of loads in each process?. |( J* m- ]9 S2 h
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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  l1 K( d/ a; r: a
move into Q_wait /*Capacity is infinte*/! u! a  A6 E0 q: U# ?- B
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/" Q# p4 B  q" X  _- R1 Q

- a  H$ J  M0 M6 n; ]7 zsend to P_B" A' @1 j+ A/ e8 G
end
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P_B and P_C is similar7 c2 w" n8 s7 ^2 f3 N
triangular 30,60,90 min
: j+ ~; F: R. ru 60,30 min8 p: l' W% c: K4 _/ B- S* j
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2 G+ Z' z' S# w2 S! L4 Hin P_C, you need to send to die.$ N  d. T3 Y, O2 W
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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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" ]" _; l' L9 P" ~' p* M0 NRemember 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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