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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 ]! `9 m" ?) 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.$ `; l9 t+ F+ P, L% g
  Loads are processed by each operator for the following time:
! e2 `$ g8 b7 j5 y8 m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 R$ E* y0 Z1 @7 r& f% m1 Q
  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.& f& S+ Q1 B* R% z% {6 u) m- ^
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) k! a0 ]2 M5 |$ o2 S2 i$ |. h4 z
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.
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问题:
# U. W: b/ c( o( \( s9 n/ f& CAfter running the model for 10,000 days, what was the average number of loads in each process?! z$ v, |1 Z- I+ _0 T* r5 ~0 B; O
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; m* [. M) H9 f2 S7 Zmove into Q_wait /*Capacity is infinte*/
# p2 E/ r3 Z, a5 Q* m4 _move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*// M2 f% G4 [' N3 O" ^! N/ g% P7 p
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send to P_B% p& |+ ]0 `4 w0 y- R- k6 x5 E7 c2 t
end
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7 o% {- r9 e: E2 J: W6 _9 [% }P_B and P_C is similar) p( t( q- }  c9 d
triangular 30,60,90 min$ ?8 H) ~/ w, n0 [
u 60,30 min' F) F4 X, C/ f% W

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in P_C, you need to send to die.
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2 Q0 w  w8 F! x3 d7 ]- m, VThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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Remember 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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