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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,
6 K! A+ `4 b# a3 W$ [/ E( U0 a! c  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.; H+ K5 ]- ~( E) X
  Loads are processed by each operator for the following time:# i' V8 k4 m  f% h% F1 H4 J9 e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% G! f7 ]! y0 N6 F* t% {  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.* \/ c) [/ c- k% T" H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 L- S9 `6 d, k# u6 ?" w
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.- c3 g& V# o# e$ x. a: p3 z
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问题:
6 o9 {" a! Z% l1 L; KAfter running the model for 10,000 days, what was the average number of loads in each process?# M* L& }- K  O6 v0 X
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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. h, y5 u' n! ~% k0 t
move into Q_wait /*Capacity is infinte*/
# ^7 ?0 ?! \6 q- s" Tmove into Q_process /*Single capacity*/
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% _2 K# V2 Z; m& v- |8 V& x8 A' ~use R_A for n 60,10 min /*Resource A*/5 m4 |7 I6 w  {/ I# Q% A8 X8 U

& ]2 B8 Y3 Q2 j, q$ |send to P_B/ S. }# Y$ }) ^, g( ~
end
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& j2 s' L6 n! IP_B and P_C is similar3 |- ^8 K7 Z* r
triangular 30,60,90 min& M' D, i# a( ?! X
u 60,30 min0 k; X' u: a+ z0 q% B8 o# o! j
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& L: y  p& A2 U  U- j. {0 Nin 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.
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* t3 F, C* ^0 T0 }( N, L0 iRemember 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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