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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,
: w  ^6 r' c, d; r* a4 N$ L# [( I  P7 q  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.: M  l: h# m/ L- L6 |
  Loads are processed by each operator for the following time:& x1 M( t1 ~) O2 D  M
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. z) h, U, F& j# K' j+ ?! V
  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.
: o8 `8 A2 o6 X. r" @1 D  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 }0 Q  G9 `# 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.
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问题:& o1 a) z6 |" h3 ~
After running the model for 10,000 days, what was the average number of loads in each process?0 g! s/ o4 m$ F* u+ X7 ?* [; U5 I! `
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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
9 J# ?! b: M3 X& I7 imove into Q_wait /*Capacity is infinte*/
/ v( E" b% `7 T, H% Z# z' h& f7 Ymove into Q_process /*Single capacity*/1 ]9 P/ f+ D3 X3 Y1 c

3 k9 H" ]+ o% O% R: cuse R_A for n 60,10 min /*Resource A*/9 [, J# Q; c7 I' N5 Q

4 d6 a  ~* o% H. n% O) h# k: isend to P_B5 z% u* [$ u9 P' i( s
end
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- [, p& X0 k' C, ^; vP_B and P_C is similar
4 u3 {6 v: }/ x! A7 o; }4 i( Ttriangular 30,60,90 min
) G2 t8 d7 t; l  F) t4 J5 ou 60,30 min5 l) B2 W% @$ [
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in P_C, you need to send to die.( e9 x1 z7 V  r6 S5 R; ^) U6 Y

5 h0 F' H1 x; cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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1 e; @3 {* L$ h, x# K) \3 y4 ]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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