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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,3 ~' y5 ~# ^  e7 n: t6 R% u
  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.9 R! A$ b! [1 `( `7 [) O
  Loads are processed by each operator for the following time:4 G2 j6 r5 S$ o  M  u0 _' _
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 j, o* q% ~+ k) t" ^0 d: 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.4 k4 L9 \1 ]  e% K1 W* C
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! I& t' w: `2 Y8 Y7 lSend 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:4 k  n" g7 U8 ]4 \
After running the model for 10,000 days, what was the average number of loads in each process?
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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
. y" ~8 Q" j5 Pmove into Q_wait /*Capacity is infinte*/1 J" V8 r' j- c$ O% ^0 I
move into Q_process /*Single capacity*/
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# `; `$ o, D. s& p+ _  P' b! kuse R_A for n 60,10 min /*Resource A*/7 X6 G' @1 A0 l/ O9 B$ |
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send to P_B
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P_B and P_C is similar0 g$ v1 {. t" R  h, V+ B( N
triangular 30,60,90 min8 K7 i8 W$ W! ^# e
u 60,30 min
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( x% x1 h" {% s- J* Sin 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.7 n/ z7 z4 n0 @# z
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2 O4 o0 f& e. Y# g! B: yRemember 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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