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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,, e7 g, U/ }8 |
  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.
; H" M/ C' A, ~3 R" j) k2 D& j- W4 V  Loads are processed by each operator for the following time:. z. N1 s5 R4 e+ |3 W
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 F2 Z' I" C" K: L: l+ o9 V. h
  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./ N4 m' D: X/ v
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 C) e% B/ T- [* k# m
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.7 O. H' j; n3 g
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问题:9 d8 A$ }5 H9 {/ e$ r8 p; ~1 b: }
After running the model for 10,000 days, what was the average number of loads in each process?
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7 J# ^4 k* R! r1 N* c6 c% t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ \2 O! c! V) E/ X! xmove into Q_wait /*Capacity is infinte*/
9 S$ R& p8 d" O& {move into Q_process /*Single capacity*/
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( A7 U/ l' y" u7 ouse R_A for n 60,10 min /*Resource A*/4 j9 z% ~; |4 K# p8 b

8 V% V7 |: M/ ~$ hsend to P_B) h% m. _$ ]2 w4 O. P; x& @: F
end$ U/ |, x" ?1 ^5 g* O+ }# _6 N

3 E1 R. L6 T- B( r: tP_B and P_C is similar- |6 N+ W: X3 I6 q& r/ I$ `
triangular 30,60,90 min' O) R; [5 j0 s) r/ S
u 60,30 min
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in P_C, you need to send to die.' Z; I% q- {" M  ?0 q/ O+ i! Q" C

# w, b+ b$ y6 @5 U6 T% {9 i. d; gThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( K8 _9 Y: a& H8 N# c+ ^1 \

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) y0 E  A8 h7 N: kRemember 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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