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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,
0 X0 y2 h  a3 V' ?, ~  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.+ K7 y! {3 I2 G, P# e. |( K7 }7 g
  Loads are processed by each operator for the following time:- ]. b/ a0 l# A( E0 o# r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( C2 l6 i9 B- a
  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.
2 E' s; ?1 w; o  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 W0 ]) \, T3 a- KSend 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:& u" d; F7 p2 ?1 X4 j0 Z
After running the model for 10,000 days, what was the average number of loads in each process?
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8 ]9 ~9 u2 o& u" w2 Q8 K不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" R& ^5 j2 `) N8 W4 m+ \2 s
move into Q_wait /*Capacity is infinte*/
5 n% I/ F/ `# {4 g; [. t  Qmove into Q_process /*Single capacity*/6 |+ }% }: P4 v3 L. ?7 _

& v+ j+ _, ^" r& guse R_A for n 60,10 min /*Resource A*/" R0 o- N& {3 V5 v* Y; [# x
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send to P_B/ r! `8 p% N9 i- L
end( A! r. S2 U2 S2 A$ t0 l
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P_B and P_C is similar
% u" Q' X2 z: f& t2 T( U; ztriangular 30,60,90 min/ e0 j# @4 R& Y5 }# v  j9 y/ A$ u
u 60,30 min. v4 o0 p. A. E. _' D5 i/ V# u

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& B: ?- T/ i5 R# i4 @0 Iin P_C, you need to send to die.
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+ g7 q* |; {5 a7 ~4 a4 FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( u( o6 `, u2 T& l9 j8 G

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  a* \; `0 M* K. L% h# E% NRemember 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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