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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,' c: U4 ^# M. N8 f7 q% C5 H- G
  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.
5 ]  h; E/ O- N4 f( w" b! O/ J  Loads are processed by each operator for the following time:
3 C" U3 l& ^% t% T" x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 r3 X% S2 d8 f; ]
  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./ t2 Q+ N. w$ F& q# \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., {% f7 A# a4 z, H" ~% r
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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2 L' E% {( U: P6 v$ z# [问题:
: ?" Q8 V9 [! E  lAfter 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 arriving
7 i- f8 C6 Q2 w& W. C9 m% Omove into Q_wait /*Capacity is infinte*/+ }6 }' I9 w; ~0 B2 ^
move into Q_process /*Single capacity*/
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  a. z4 s1 ]% ], q- Buse R_A for n 60,10 min /*Resource A*/
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send to P_B3 Q# |7 w) n+ |" G6 d
end
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P_B and P_C is similar
$ E9 _1 y& I5 C( Y( M, ?6 [triangular 30,60,90 min6 l/ ^6 _+ U  Q3 B9 u2 F
u 60,30 min
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3 o) F) J& x/ q7 P) Ain P_C, you need to send to die.
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0 I' t1 r/ b# \4 Q  N  CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 o4 F4 W0 _7 [, u1 o

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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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