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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,
2 J6 W9 F+ Q6 q* W1 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.4 n+ a, J) W* Q# {  G
  Loads are processed by each operator for the following time:: A- S) V3 E1 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 p* K3 d  K0 Z  }; A$ P
  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.; K: y1 Z3 `- B, q6 q2 m
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ N; ?, [$ P' L( x7 ^3 h' \3 S8 XSend 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:( ]$ C9 n, l7 H' u! @
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. F! N8 l! l+ ?. X
move into Q_wait /*Capacity is infinte*/
: v# M: O. l8 n% wmove into Q_process /*Single capacity*/4 d' N0 k6 a; h/ a, ]2 S
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use R_A for n 60,10 min /*Resource A*/
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# ^* T1 i( y8 P( t' Q# gsend to P_B
- @' A" ]) X( Q$ O  u4 P& h4 \end
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P_B and P_C is similar
# x# C( t) `* `& h# H. E, x* w+ v3 ztriangular 30,60,90 min1 Y; e  ~  T$ M+ Y, N
u 60,30 min8 v! X) _& a/ b# ?; n
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+ P$ k9 l( j8 X  [in P_C, you need to send to die.% b1 |; ?' e6 G: x" N$ ?
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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.1 C& S4 m0 ], Z
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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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