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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,
. [1 \" N) H* w6 f8 `) n0 x3 J2 u  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.
9 L" W# G3 ~- d* U' {- |- E4 [! R  Loads are processed by each operator for the following time:
& }' Z& `8 n- ?" z' c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 b) J8 s! h$ l  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.+ z) `( q( }( h, W, G1 B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 S# s5 u4 ]/ N& {9 _
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.' F+ n7 M  n2 L  X5 x- K

8 p/ w4 u5 c9 D: `9 _问题:
9 K- {& I5 c; {/ X( g2 BAfter running the model for 10,000 days, what was the average number of loads in each process?8 Y4 W3 c" [* [* S  E
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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+ }& J7 s* K% Qmove into Q_wait /*Capacity is infinte*/
, ?# r2 r2 x! I( v# R' U# G8 Q) vmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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# }' O' r' u7 O; l  \0 Ysend to P_B
+ ~. N) y3 V: V% Y# P0 nend  I# A" n8 s# ?) b0 i* @

' H* [$ v5 |% y5 NP_B and P_C is similar
2 t7 J; f/ |& ~# U; _triangular 30,60,90 min& Q: V: X2 u, T  k% R8 @
u 60,30 min
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  u' ]8 Z5 @2 M; G: a# [$ h+ O7 r8 h" R3 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.0 t( n4 j3 ^1 ]4 ]6 X0 f% R
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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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