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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,2 U+ X. ~, y; z* |1 ]! s8 z3 f
  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! n* q2 K+ o4 A" Q8 X' |
  Loads are processed by each operator for the following time:: K( h* b5 ?, l6 i# P
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; O+ c7 @9 B0 q  K) |; \8 e7 n- |5 Y  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.
- u+ S1 t7 P) E! b1 d  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. F5 \* s. E' U
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.) X( A' {8 @% y7 S7 K7 i! D

( w7 N; h( B' e# T* d4 l) d5 P+ T问题:
3 n: H- R& z/ m% g" ^/ g4 D7 IAfter 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
, @4 z6 k9 k  Kmove into Q_wait /*Capacity is infinte*/# f& F, s/ ^' ?- s
move into Q_process /*Single capacity*/! e' Q! I% `: W0 w7 k/ z) Z/ l; e/ a
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use R_A for n 60,10 min /*Resource A*/! S* z( Y) [) y1 h% J. b0 e
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send to P_B
$ c4 S4 f; D4 p* B5 c; ?' b7 cend
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P_B and P_C is similar
7 K3 |# h6 `5 ftriangular 30,60,90 min, ]& j/ G9 x; o! G+ b
u 60,30 min7 |* @( z2 B: s# V% s7 Y

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% V9 r0 X- ]6 V4 g  P* cin P_C, you need to send to die.
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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.  Q( u# {! W. k
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! {4 y! M! b9 a, R, {. WRemember 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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