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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 N; b* R& B% y! I' 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.! G" p2 w# m/ E, ~# x" T9 r
  Loads are processed by each operator for the following time:5 _2 d8 _- Q, H$ L
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; H4 ?9 g$ e. Q  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 h  P" d. o* ^! \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% t  u5 Z( a6 n% v% o; b
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.9 g" @/ H* C" A% Q& s) u+ U) i. U
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问题:
# W0 ?2 J6 r8 A" p5 c0 RAfter running the model for 10,000 days, what was the average number of loads in each process?$ _+ j( t- v6 I) E8 z4 b) \( |

! z0 Z. ~4 @( B2 |, o9 z2 \0 h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ u% y. V. s) y2 U
move into Q_wait /*Capacity is infinte*/% Z0 j9 @7 N* C/ I6 \" W
move into Q_process /*Single capacity*/$ @5 Q' z3 N& G0 a; h
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use R_A for n 60,10 min /*Resource A*// V& m* _" J. c, I& d
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send to P_B! [: I5 P5 |, S% P& f
end
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P_B and P_C is similar
# _* t5 J+ B% c- _/ ^3 O* htriangular 30,60,90 min
9 k& k% X# r' b7 g' }8 v. Su 60,30 min/ {' E( G# w. t4 y# [. w
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in P_C, you need to send to die.1 ]( P6 v( U9 {! w. U, S- q7 Q

3 l% m6 ]( ~, _: c5 o9 u# sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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" ~! O" r$ g0 @- i$ z0 TRemember 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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