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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,
; ^3 \5 ]7 I- S4 O  K  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." _* P! i! d% }! a. {7 A9 j) C& D
  Loads are processed by each operator for the following time:
" t/ p% d) D/ t4 L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& Y' V; d  z: W1 m
  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 s* U4 Q) o; r, B0 C( Z9 ]8 J
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ u$ F+ @1 m! N; W' q, g, @
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." R4 G+ C0 Y, Y: p- l4 Q; L

3 Q6 Y1 l0 ]" W% L6 g1 \% g问题:
% V# F2 a' `" j0 o& ?After running the model for 10,000 days, what was the average number of loads in each process?
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- H- l7 f$ M" @( X* M不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 W* H+ v" B# t& _* F+ n9 d* wmove into Q_wait /*Capacity is infinte*/
6 Z, d) H" A; T. Umove into Q_process /*Single capacity*/6 e4 _9 h9 R. R4 U7 @, l. N
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use R_A for n 60,10 min /*Resource A*/3 Z, p$ N, c* r4 p1 V
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send to P_B% L9 d$ {  s; p  h6 d
end
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) s2 H0 {) S; {; L9 qP_B and P_C is similar+ w* h+ _( K( r/ k: Y
triangular 30,60,90 min
, x, y1 {1 s' @u 60,30 min: H3 o, j: w* u' ]4 Z4 k' _
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$ U- u' L2 d% ~1 ?. z2 B0 Ein P_C, you need to send to die.: Y- E. b, V! r! I

+ C2 ~) b4 d* G) k, O% Q0 M/ w# LThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 o6 V0 k7 p) I. O$ g
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1 v* z  l( J! G3 i4 oRemember 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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