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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,
, F6 [+ C' x7 A3 h7 Q( F/ p, 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.
+ k' Y: A0 c  B  Loads are processed by each operator for the following time:1 u0 J, |5 @! G$ T" b* }
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" E8 m, ]' v/ D" `) x; J% k  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.
7 i  y* X6 W. l4 B  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ A# z3 Q3 H5 R  YSend 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.$ R2 L7 H0 ^% F! @6 A
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问题:
( V, Q6 A+ y) A0 E" w% SAfter 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
  c2 F, ]/ ?$ O; d% ?( R3 Xmove into Q_wait /*Capacity is infinte*/
7 t0 x- p5 _# H8 ?) T) Ymove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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4 F. y/ q0 U9 u" }P_B and P_C is similar
- y& y  g' ?) P, C: \. b7 {triangular 30,60,90 min
( ]7 h+ A, Q% w; _, ?/ Ru 60,30 min& Q3 a. P- o  a' |4 w+ P  g

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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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8 r) s7 S3 n- P# V( W" a7 QRemember 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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