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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,
3 ]9 V: h, w; _/ c' U# i( v! l  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.1 q0 b: M, P* E( r; ]6 D7 A) n
  Loads are processed by each operator for the following time:, J# b7 S. C' i& ~; U8 t
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ m& a. _. y+ X4 O/ 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.
; X- O# P( K# Z8 c& D$ R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 }2 R( v) E2 e% [" p: m. q6 fSend 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.* Q# u- P9 H7 H, h/ D2 y" @
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问题:6 G  _$ ~1 n4 e6 i4 U
After running the model for 10,000 days, what was the average number of loads in each process?
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5 G, V+ H3 E6 r5 n; f不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ G2 b( p8 Z9 j; c2 \
move into Q_wait /*Capacity is infinte*/8 C- `% J  D$ D1 o9 B1 n
move into Q_process /*Single capacity*/$ |( s9 t3 M6 [/ B

& P  h; Z+ ?* [0 T8 `- V$ \/ I, ]& |use R_A for n 60,10 min /*Resource A*/
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send to P_B
! i; h; P" _9 j5 {end
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P_B and P_C is similar
, L6 ]/ @" Z9 R& N( C  Itriangular 30,60,90 min
: `- x& B$ k8 s+ _2 Pu 60,30 min% e! b) @9 R! s6 m1 p. K  c5 y

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in P_C, you need to send to die.* f! Z7 ?, r3 j- g, p' V9 Y0 n4 _
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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.
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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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