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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,  F4 \% ^7 a0 I9 E, P
  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.) X7 I; P# M) f' r  E# R% G
  Loads are processed by each operator for the following time:
9 l: U" @" U- K' z  }5 j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 I( Z2 [! o/ I  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.
. ~$ |$ J% W, g! ^5 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 ?4 p# x2 x: |* R" nSend 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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) s4 q0 f* \0 @* U4 i5 J问题:- B' y' g# ~2 c, |& b  O) ^
After running the model for 10,000 days, what was the average number of loads in each process?3 W2 v" h1 k% L; _$ M

! }6 }" ]9 w! o9 `' E不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 s+ t  d, s) l2 Ymove into Q_wait /*Capacity is infinte*/; N% e6 \+ ?; d' X$ m$ \
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 w6 N2 C% h' Y- H- D5 X
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send to P_B* s* C1 a, j, \6 p% n6 K
end
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P_B and P_C is similar0 o( @- r3 |! J  q7 @
triangular 30,60,90 min5 B  }( g1 {4 A1 i
u 60,30 min
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in P_C, you need to send to die.5 t9 D" g% M2 L% q4 \9 g* v/ A
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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.3 c& `  G2 _/ T* d$ z+ j, B1 T2 G
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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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