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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,8 e+ C9 g* e" P, {) j
  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.: T3 A. u) V' H7 _, Y/ K( Z
  Loads are processed by each operator for the following time:
' R! `* q1 [2 |; _  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: G& Y3 b# t$ S- p% O  ^4 E
  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.& y8 A1 ~- d: ?1 W+ o0 w/ \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* y' A0 A6 [2 H. N: W7 v, g; 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.
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* a# A) I/ r4 e# j8 H问题:
6 F5 y/ [% M1 rAfter running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving8 d2 t) L+ A1 Z- E( f3 g) a
move into Q_wait /*Capacity is infinte*/
4 C5 A1 o: S9 u. d5 Imove into Q_process /*Single capacity*/
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: ]& p+ c8 d$ D7 r( _use R_A for n 60,10 min /*Resource A*/$ ?8 Y! B" L" k% I# Y% b

, f3 n0 N( y, w0 L( B- xsend to P_B0 I9 P1 @2 Q0 k( G5 {  U* K# C
end& S# @; ?, H# ?7 |/ Z- ]* i' S

5 W; f1 q0 e& P1 fP_B and P_C is similar
$ o9 K  s/ f' v" s0 Q+ c  ntriangular 30,60,90 min# X+ p/ ?8 ~# O# E4 M0 B
u 60,30 min" ~% ^# ]% T) _$ y4 {

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in P_C, you need to send to die.
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1 C/ D/ y$ O& T" x: FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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6 E1 l/ l7 c7 O& f+ N  q9 XRemember 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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