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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,/ V) u, u0 }" F
  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 ~3 k2 n4 r, P& b. a  |8 [, t  Loads are processed by each operator for the following time:; K4 b2 J3 R1 D3 O$ T3 c( V/ e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 S; a! c4 h% t
  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.
; Q& e/ y" V9 k# O& S& R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( ^8 r8 L, x# d$ G7 ]$ _3 O2 p
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$ u% C' U- o$ l

2 e$ ^  v: ~# p( t% _2 T7 [问题:; [! e5 v) ~/ U% z$ ]0 J
After running the model for 10,000 days, what was the average number of loads in each process?
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; G6 _. R3 P/ ], ?不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' M, r$ b2 }4 amove into Q_wait /*Capacity is infinte*/
& C% g* ]4 A! l  R/ Wmove into Q_process /*Single capacity*/6 a0 x6 i  }0 S- W6 E+ H" R' N
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use R_A for n 60,10 min /*Resource A*/
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& L/ a# w( D6 q& U- P* ]send to P_B
: l# e; \4 x1 X, M! a0 U4 T  Xend! T; b/ a5 @* x% s. T9 I/ e5 C

! J  N% l1 T" c3 WP_B and P_C is similar; k4 ^  j# O" W( [
triangular 30,60,90 min$ a0 X" `+ {4 C6 e
u 60,30 min# z5 I% H7 ?5 Y: ~2 T+ M

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: }4 @8 Q7 p3 d' C* Ain 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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+ s. t' ]. \1 c
& i7 J/ A$ f! t1 s: O. iRemember 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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