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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,  \' h( Z- O- u+ J/ Y  f- O# \4 I
  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.% W( Z! L* e7 ~$ i* c
  Loads are processed by each operator for the following time:
! S+ `( C) K/ B. z, m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) p' ?! ]* Q, I9 [* }: T9 `  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.
! n- w/ b! h6 _( ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ a9 j. V: p" |' ?" kSend 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., v& K8 ?. G; I$ M5 w. p% @

6 \6 \  T2 ~2 \- O" D0 T1 E问题:, U* X5 w1 W; |4 G( o/ C
After running the model for 10,000 days, what was the average number of loads in each process?  _/ h  X  V$ U- l, Q+ J# x3 F& \

2 [9 d8 i& O6 z6 f$ Q0 a3 k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  W2 Y) I& f& H: |" \4 P
move into Q_wait /*Capacity is infinte*/  ~5 b# s  G. t. m% [
move into Q_process /*Single capacity*/) q& i/ ~  n9 D9 y$ i
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use R_A for n 60,10 min /*Resource A*/) l* C. o0 M4 ]7 u0 H& B4 d
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send to P_B
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, S" y; _- B* q  j/ pP_B and P_C is similar
5 E1 {) j1 P! t* u- E* Gtriangular 30,60,90 min
7 W( n7 ?* D! a+ b0 R1 [$ nu 60,30 min
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in P_C, you need to send to die.2 U, e0 `0 w; z+ U. D

% O0 c+ `5 b8 S& F& zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( L! W% d6 W1 e4 I; `9 U: m$ {

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# y" R# L: N- v" ?0 URemember 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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