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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,
% g2 {9 L) F) d9 f+ @  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.
# v8 ~/ j! |! S5 H2 b  Loads are processed by each operator for the following time:
# A. R: a/ q9 F  l. y6 }  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 O: U% F  G# k" H! 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.
4 ]1 X+ C* Z0 K2 Z1 S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 b9 P0 y. X/ t* s
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.- G; H6 j' J0 b

9 D2 g2 t7 k2 s) D" X问题:
0 @0 I: d5 M/ ~2 pAfter running the model for 10,000 days, what was the average number of loads in each process?
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7 N* T3 v* w9 w3 O* P不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving% @: M: g( V3 H0 |# f
move into Q_wait /*Capacity is infinte*/
2 `* s1 c$ b' Cmove into Q_process /*Single capacity*/
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+ U4 A0 H& p" V# r( x. puse R_A for n 60,10 min /*Resource A*/
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send to P_B! I# l0 ]! d/ e% Z7 \
end7 g  \$ S& |  L" M

$ T6 H; W$ |1 `: Z. a/ yP_B and P_C is similar2 ?) X3 Y; O% N( `
triangular 30,60,90 min9 ]9 v/ y, g0 O8 Z! r4 `
u 60,30 min
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6 b9 h8 t$ a' _
in P_C, you need to send to die.- ~+ ]" z0 G* I) K5 f" V% t9 r
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.) Q, j' x' B; W  u
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  [: u; `  O: T  r0 w! Y! gRemember 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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