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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,
% i5 E0 ?! H2 H; ~8 @( g1 R  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.- V' I+ M$ f0 ~; x0 _
  Loads are processed by each operator for the following time:
; S; R* q( z" C: E/ A3 }( a  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." [. X; t3 i: g6 _) N/ U) 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.! R# }( _7 ^) J3 i& D
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( B, d* m) V) P  n. `
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:3 w# C8 s0 f! p5 ^! R( `- h; J# _" w
After running the model for 10,000 days, what was the average number of loads in each process?
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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
. _  B1 Y9 ]$ H, ~  q+ pmove into Q_wait /*Capacity is infinte*/* n$ F8 |. a5 T/ p% [( f' g
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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7 t/ A/ P* L& C6 \8 R& ^send to P_B8 f2 M8 a$ e/ S" }/ R0 H
end
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P_B and P_C is similar) }% h3 i0 F. @, w: N
triangular 30,60,90 min
$ _0 h, ~3 }- K5 o  r: c) zu 60,30 min
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in P_C, you need to send to die.; `0 _( v8 F# n* K. I  w6 a

& ~! a% R# u4 o1 p4 kThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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, z$ ?% H. Y5 P3 m8 ^  URemember 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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