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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,5 r3 \% H/ V1 [2 j8 N" C  K
  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.
3 X. A& ?, C4 t8 M  M8 J  Loads are processed by each operator for the following time:
' W- R" ]; r/ V" U( i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 G/ q$ j  a1 ~/ d0 V: B  N' r1 ?  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.% O7 R5 A  ^6 o, B- H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, ^2 `" P7 k7 m/ q3 `6 @5 d2 NSend 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.& h; o) X( K& M" ]- ?9 U# d
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问题:" K4 s8 i* @' }" p1 S3 i& M
After running the model for 10,000 days, what was the average number of loads in each process?& K% E! T& {1 M9 G' I

7 u7 L7 y) o5 A6 E. h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# s) |8 W4 h- |0 ?; K* S9 ~move into Q_wait /*Capacity is infinte*/8 B; P) \3 q+ T1 [0 X6 V! ~
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/8 M3 N0 K0 G( a/ N

( p3 ~3 I9 V! x) o; i$ M; Tsend to P_B& B7 q: }( U4 G1 P' _! J
end* A( |/ G6 K' q% e6 t
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P_B and P_C is similar" E) @% u& }' T+ v) I! b
triangular 30,60,90 min
2 k# |4 ], O# [% d$ r( I: K) [u 60,30 min4 l" w  B, U, `$ l
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in P_C, you need to send to die.% q2 M: _& P: C% ^" Y

9 M7 t* {" ^' G# YThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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