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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,4 B2 X* T* B/ q! {$ m
  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.- I& H0 r4 Q9 v
  Loads are processed by each operator for the following time:- u( m9 B! P+ i1 W& _% `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) |) o" t+ X, [" l; P1 {5 n/ i
  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.
; \6 N6 k* J+ _4 e; H; N  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ u/ U7 j7 Q* D( L3 Q" ^6 N& d* Y* FSend 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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  A* n. l9 [) l' I问题:
: L- X3 T  u% @" v1 H# p: r) W, ?After running the model for 10,000 days, what was the average number of loads in each process?
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+ m2 O: k6 `3 |不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving# A! m) T$ n* a/ K: ?' I- n
move into Q_wait /*Capacity is infinte*/
7 V  X3 ^) V2 p  e+ ?. imove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/& p& q" p  f& ^
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send to P_B
5 {2 L! `4 K1 ~) D& y3 M0 oend
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P_B and P_C is similar
' e6 G) s1 T; [0 n; Ftriangular 30,60,90 min! f' Z8 W+ H* x6 u
u 60,30 min
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* t( U0 t  ?2 O, a9 Zin P_C, you need to send to die.
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2 G  m5 t( N- G3 F/ vThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ l8 b; X& `3 d6 b

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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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