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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,
; J: U. s3 v. ^7 y4 a( z  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.. K) m5 q5 B* D6 P  |- ~
  Loads are processed by each operator for the following time:
: h8 K0 g: G! {! u4 |+ _  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# ]/ v# S$ w6 E& |4 ^4 H1 L2 {  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.9 v; G( l: b/ R$ p! j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% B& [* n3 {2 ?* T' A6 D7 q
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.
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) w# _/ I. y7 _问题:
/ K/ C7 y6 D4 oAfter running the model for 10,000 days, what was the average number of loads in each process?# y0 S" U  K( ~8 }& X! a

! B; m3 R8 G2 Z0 s% f不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ y5 w. u  M* b( ^4 {
move into Q_wait /*Capacity is infinte*/
% C) b4 _- w, {) x6 tmove into Q_process /*Single capacity*/4 J) r! i1 K( R7 w7 K: G% o: [
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use R_A for n 60,10 min /*Resource A*/, W: n) z" |* r" g2 t

9 @# S* x8 b0 x4 msend to P_B" x* ^/ y9 j5 x" `! T( w3 f
end
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% {$ Y& ~/ v8 I9 M9 m* B1 ]P_B and P_C is similar
; ^- ], B1 i2 p# Y; z4 otriangular 30,60,90 min! b  S$ C$ N3 d
u 60,30 min
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  M. p- ^3 w8 X$ Z  m, @6 k* B" J- [( K$ {
in 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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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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