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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,) X- z* w+ W" V* C. a6 e. _# N6 @
  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 c- [8 r- [! a' b' Q* s  Loads are processed by each operator for the following time:0 b- w/ |, e' R( i! h" R
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) y3 K* P2 q' ]% f  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.
8 O% N" C+ ]6 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  H9 D+ H( M1 m% |& k2 m8 _5 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.
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问题:
  ~& B' E* z1 b  E* V+ [/ fAfter running the model for 10,000 days, what was the average number of loads in each process?3 f% Z6 O1 |# Q0 O4 q' z( j4 X, @

3 x, D5 u9 |% Y- i! M6 ^8 |  M不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% A: m% q1 v+ W5 Z
move into Q_wait /*Capacity is infinte*/4 M$ P) x/ O- D3 h6 U
move into Q_process /*Single capacity*/) b4 z- I5 p. B1 |1 F7 Q+ c, ]

$ s. ]% {' X- D1 Muse R_A for n 60,10 min /*Resource A*/& V% L' P$ C5 T7 B/ G" q- o2 s/ J  X! H

2 i1 s/ |0 u- W- Ksend to P_B
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& r2 q" g/ ?( J- k- m, J& k) o, yP_B and P_C is similar5 E, j$ k: D% K5 A4 s1 [* v
triangular 30,60,90 min
; g$ S  S6 P  A' O, M3 Eu 60,30 min* P4 x# e; x$ 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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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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