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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,
4 H. J  x! b9 g1 }& K4 r  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.$ M! z) u: a; [$ {5 D1 Y/ e. J2 D. m
  Loads are processed by each operator for the following time:; w4 G3 _9 P3 [$ E
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% v$ w/ b% {& n
  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 P0 d9 Q; M  r/ T' v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 ~9 a: M  {; a2 R  QSend 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.* [1 c2 D3 [) U* p+ X' F" A6 @
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问题:
9 J. P& K! j0 C% \7 [" A- EAfter running the model for 10,000 days, what was the average number of loads in each process?% c6 Z5 ?+ ~) G: _9 S

+ P4 I" \% F3 b6 Z' c7 b不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 x* a% |. j# p% c, L% |, I& pmove into Q_wait /*Capacity is infinte*/
! p9 E" _3 o  W& H& y/ Kmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
! ]5 P4 h+ w# `8 R9 e, }! U! a4 x- k# _8 h* J, T, ^. a
send to P_B
$ f5 A5 \: S/ ]: |. y5 K$ {2 Y! aend6 F% k' L& F; q7 _; e
: |4 Q% R- O& u; h, K
P_B and P_C is similar
! N% J4 ^! w3 _2 o) v8 Striangular 30,60,90 min
4 |0 b, @9 V& q9 u" ?+ j$ Cu 60,30 min
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- m# i) D9 F/ J) y- j) s  h$ @# kin P_C, you need to send to die.
# ^$ {) Z7 U( m4 k# P% X5 J9 o: v) m" _- D5 F! L$ p7 G
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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