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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 z/ ?& p& Y- _0 t6 ~  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.$ E; q5 a; p3 [+ \( k! }! b+ ^
  Loads are processed by each operator for the following time:
4 _3 O; s* t4 ~: d0 h1 k/ [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 c# A# a2 H- s' L/ j4 `- }- A$ Z5 k% 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.
, Z9 Y  d2 M) N+ b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 ~/ a3 ^. F" l$ q% g- XSend 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.  V7 L7 c- R* Z+ Q

/ g$ Y  ?, {; F2 G, ^0 \! }问题:/ L/ _" }4 @# B8 q& d
After running the model for 10,000 days, what was the average number of loads in each process?
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4 q( T1 y  d( A4 `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving# \% [& [6 J% D0 A
move into Q_wait /*Capacity is infinte*/# t9 q3 O3 s2 w/ J! e& E
move into Q_process /*Single capacity*/' z; `* L& g9 e/ e
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use R_A for n 60,10 min /*Resource A*/
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  ~9 }3 k$ b0 d2 h. a) e+ ]% @' Lsend to P_B& s, k. _! ]: i; b+ r! n& w
end
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P_B and P_C is similar
  F, n' M6 G& x% c6 Otriangular 30,60,90 min# o# s9 _3 @; f% c8 s  W. g( f7 ^
u 60,30 min
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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.
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( t8 x8 X+ ^5 K+ V; s7 {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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