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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,
) r# Q; j# m1 K% a  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.& {5 J8 [+ N. B( z( ?2 I: m
  Loads are processed by each operator for the following time:6 y: f. [7 b3 p) l; N" G5 p( g' J( a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 D' z. [1 c, V; [6 x* B, C( 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.' A, e1 w* Z2 ^% M5 H0 c( }7 Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, {# h0 K; R+ }. jSend 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.  B' m5 y" ~1 G2 Z: x5 |4 b
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问题:
* w/ @# N$ @" D. }( uAfter running the model for 10,000 days, what was the average number of loads in each process?
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+ k6 ^/ }! t/ v7 l不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
" k; R% M! n% @. Mmove into Q_wait /*Capacity is infinte*/# Z7 a* `% H1 @- X/ H
move into Q_process /*Single capacity*/" Y" T2 Z7 }1 i! k
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use R_A for n 60,10 min /*Resource A*/
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2 r; u1 I; G, F8 m" Esend to P_B
6 R3 ^& |. Z! n8 y# x3 ^end$ k5 U$ A. H% g( b" M7 w
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P_B and P_C is similar
2 `" T( z4 E( Q' Dtriangular 30,60,90 min/ K# K9 t! v; j  V$ ~* F
u 60,30 min
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! K: k6 ?1 `& _- I, nin P_C, you need to send to die.
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- G( |; \, F( m$ X+ Q1 j+ X8 lThen 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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