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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,% C0 {* s! e/ k6 {4 k' C1 `% Y
  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.% J) f/ M- ?) w% [5 A1 @
  Loads are processed by each operator for the following time:
  R; q* P, ]7 R  a1 W% I" S  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  c+ N  W9 G- G1 y) M  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.
% x, @8 u% U3 F% Y, l: r3 }  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 r" h9 `" O+ N) |' l+ {7 H) N2 YSend 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.: s; G: P# Q' @5 q& j5 b* d* V

  j" B. O- d+ N, p问题:( J( t2 Y: l) F
After running the model for 10,000 days, what was the average number of loads in each process?3 i( ], h: v; e1 T5 `
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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
' O2 s1 C; \) f  a! {: wmove into Q_wait /*Capacity is infinte*/$ a, i: g1 y$ p3 D( [
move into Q_process /*Single capacity*/, M2 K- O# d6 T* ~
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use R_A for n 60,10 min /*Resource A*/$ _7 g! a! J' V" g

$ U0 _. G% G8 a( C+ tsend to P_B* r( ]- c$ W6 V
end
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( r5 k% ]( I( E; o! O, ZP_B and P_C is similar
# i/ G2 o$ d7 utriangular 30,60,90 min" s, ]/ U5 E& {8 w
u 60,30 min
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' i/ L) P1 O( ^. Tin P_C, you need to send to die.9 s% @( b! J  P0 N* X( M  Y5 |9 f* Z

. k+ j! h. A8 T6 p8 yThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( u4 Q5 g5 @/ J; R. x! z3 C  H

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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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