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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,
$ ]6 g, k6 |9 w. z; T  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.% Y: H! k3 m' F/ L2 k9 R3 v0 M
  Loads are processed by each operator for the following time:: j" a  n+ Q, H( U8 ~* F2 L6 Q# q/ {: c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 o& R0 ^. m9 c5 J1 Z
  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.
' z. |4 ^+ \+ }; H* N1 o5 q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! c. m' K  s5 i7 U1 j! T! q' a0 tSend 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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4 a& k) n- G. L" ?' p问题:$ F* Y/ V: l- r$ }) c; ~
After running the model for 10,000 days, what was the average number of loads in each process?$ m  p' ^  c6 F% X2 T7 \, \' I4 {

% e" P2 G9 s% h$ `  |6 U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ r; D1 k+ U3 X9 E( o5 Pmove into Q_wait /*Capacity is infinte*/9 c" Q* Y4 K+ W6 G" R& ^9 g
move into Q_process /*Single capacity*/
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/ T. d9 v4 M  r, x3 v: j. Ouse R_A for n 60,10 min /*Resource A*/
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send to P_B5 @, Q8 [  [4 m! V! W
end/ m7 S8 X8 d( y5 l( a3 T

) e1 G7 H- i% w+ L; W! d4 pP_B and P_C is similar
3 T0 P1 p3 k7 J' j  y. z% y2 S4 _, _triangular 30,60,90 min
# D7 l  R$ C: ~" eu 60,30 min7 y( i8 j! g3 z2 {! k5 R6 q

; C4 `  p' `: B6 c) H+ q" }9 B; m) v' O9 e7 y2 l* n( ]+ h
in P_C, you need to send to die.
% h9 X, S8 ~0 R" \& ?; F# T7 A- e6 ?$ u+ C6 W- Z1 q  u0 r
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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/ R" P8 k8 o9 sRemember 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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