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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,! x% T3 m$ q" c7 ?: F# m
  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.
: l4 M' S  @; b1 T9 h  Loads are processed by each operator for the following time:0 g) i. T5 c6 `+ T
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ n  J$ T$ V. [
  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.
2 A; o; ~; M" R  b2 S% S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 t$ `, S# S: a
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.( d4 k: Z& }3 Z

' Z# h* F& V1 O3 m% q4 h: p% Y问题:+ {- C0 \  n3 v. d6 N: _
After running the model for 10,000 days, what was the average number of loads in each process?2 }7 w) @! O& c+ W! Z  j
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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
8 I" V1 L# ], \* Qmove into Q_wait /*Capacity is infinte*/3 N* V  X' @! O% J
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B, h7 }7 v9 }$ `2 d
end
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: @! W" v6 S& |0 vP_B and P_C is similar6 I7 g+ q( z5 w$ Q4 O3 ~; l
triangular 30,60,90 min' O0 P0 V) g9 l  j; k6 n- `
u 60,30 min0 J5 O9 G% |& z' L; T/ v  h
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in P_C, you need to send to die.
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4 Y: H" H  I0 Q- r/ c# k* O. n7 L1 CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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5 c, P+ c& k3 n8 w; F- g/ @1 fRemember 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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