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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,
) \5 e+ L  o1 H3 c6 ^  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.9 e% ^5 I! @- I& M) v
  Loads are processed by each operator for the following time:
% j' }+ J- r# t: ^6 }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 V3 B, Q, {* S% a, R3 {$ E
  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.) g4 ]9 _2 j4 g# S9 Q' ]1 E7 w& Q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- j8 F, F0 h' g* R+ y$ Z- q# p3 x2 BSend 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.. L- m; E. j. S. I0 F1 u' Y& s; b

! ~3 C; t2 @% o2 o3 K, s问题:
' K4 Z$ K1 w4 {2 N6 _After running the model for 10,000 days, what was the average number of loads in each process?
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3 E) L" u7 s% T7 W- N不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving, H; O* _8 L7 U5 T0 o- m' d3 g( s
move into Q_wait /*Capacity is infinte*/
( ]0 M( h3 T% q! X' H- x7 jmove into Q_process /*Single capacity*/6 \2 r2 d6 m1 w* m' @

2 S6 T6 v, f$ y, j- m4 E& ]0 l6 @use R_A for n 60,10 min /*Resource A*/
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1 i  B( N9 \$ z7 a6 S) U) o( {; Fsend to P_B8 f' U  h! C' `0 S  S
end3 T# r( x. r8 s7 {
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P_B and P_C is similar* }  F3 M  K& E1 `5 y% u. L5 R
triangular 30,60,90 min
  Q' P5 U: L; z# A: Y( E$ p/ Wu 60,30 min
$ S* E) d* w* A1 J8 r% c( o) @- x2 L6 o4 r9 }  I7 _
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in P_C, you need to send to die.: u0 v% o, P" y! c; @) |

1 H. P! v% D1 ^, SThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 t1 \# q3 b, k6 R) V

$ H& N' [! G2 f1 Y3 U  I% M
, L/ z2 u* T  [3 k9 lRemember 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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