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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,% m5 I' X6 D5 T
  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.  B; `6 s9 ~' |( u, m+ _
  Loads are processed by each operator for the following time:7 n' v. @$ P. W2 U5 W0 F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 G5 }- ]& t% G& n  \+ N! 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.) k. R  a9 j: w, p5 ]! w4 ^
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 I$ O% _: @4 z7 H7 U1 Z- L' X4 USend 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.* i. J% J; s4 Z( L$ e# ^  d

. m; c9 X9 \# p; Z问题:
8 M3 W9 s! r4 q" y1 v  HAfter running the model for 10,000 days, what was the average number of loads in each process?- {( E; V. H5 p+ {
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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; I9 \8 X1 k/ ], B5 [
move into Q_wait /*Capacity is infinte*/1 Z' U9 |. h! ~/ L. |
move into Q_process /*Single capacity*/2 g; x3 s- O( e+ [

0 O( V7 g. y5 {" d. ]7 ^use R_A for n 60,10 min /*Resource A*/
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8 B  i& L; Q5 Vsend to P_B
3 Q- u/ K  v' z6 V( Iend
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4 c# B$ q; f' |" {$ D- p6 |9 {/ YP_B and P_C is similar
6 g' t9 m( w3 K; U' l7 o  z) Ztriangular 30,60,90 min, D4 ]% s; g2 g, ?( a
u 60,30 min& r+ Z. u0 P8 X! j9 z2 m

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$ J' s% C$ r  J$ P6 e2 u, hin 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.+ C! d: `! n  ]8 m* J$ [  k6 m
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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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