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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,
% {$ y; r/ |3 x  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.2 U/ x* U# e8 o) ?6 Z; [
  Loads are processed by each operator for the following time:6 ^# p! Y2 J5 o! p" E. s! n0 U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& f4 P/ h$ B- k" O7 N( D  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.
; W# q- H8 C. L  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 M( t( s6 m: S2 N4 h+ ^+ y, z8 B8 |
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.
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问题:
0 U. i/ A+ ^1 F2 T+ `) m5 EAfter running the model for 10,000 days, what was the average number of loads in each process?
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% v, y- n( |. ~& y9 y不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
4 C$ a  v: n6 P4 g: a0 Xmove into Q_wait /*Capacity is infinte*/0 t1 t4 w7 Z; O& F) ?& S# ]# W
move into Q_process /*Single capacity*/( ~* u# |6 `1 O* W8 E% C
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use R_A for n 60,10 min /*Resource A*/3 p, T. F+ P( X$ n+ F+ F/ H8 H
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send to P_B
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P_B and P_C is similar: i2 n' V  Z8 L9 Y: U: i
triangular 30,60,90 min/ c6 p0 H# ~; P& t. a
u 60,30 min
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3 g6 m9 n' E' {# l' {* ~in P_C, you need to send to die.; Z$ m* ?# g1 [0 [! N

3 |8 C; q  Q2 }9 J: F0 c8 ^: \. ]$ @- {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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) ~% v; q  v% P5 t2 oRemember 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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