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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,% J9 L, n) M# H* i* h2 I
  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.+ l2 B0 ]' f) i2 h3 T- _' `  @- u6 S1 S
  Loads are processed by each operator for the following time:
' T2 ~: _, l! c, Z  M. U  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 F) A! u' j/ j/ `9 A) h- P0 u- R
  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.3 J+ N2 j- O4 t, S
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 X8 Y7 D% b/ @; i) y3 Q# }( h
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.% B% a) R  H" N
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问题:( v' J5 {, f; y+ i: A
After running the model for 10,000 days, what was the average number of loads in each process?( L; I; }9 f% }) D" t
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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
* a+ A/ X; `' G1 r5 amove into Q_wait /*Capacity is infinte*/9 _" y1 \$ j3 Z5 U
move into Q_process /*Single capacity*/
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6 @1 g( D, F! O' [use R_A for n 60,10 min /*Resource A*/
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8 W% E( \8 _# v; `2 h4 v  F" ksend to P_B4 M2 F3 @1 ]4 [
end5 L1 J4 n: a+ R/ z2 @7 k$ _

$ M) _7 G" ]' o+ GP_B and P_C is similar2 E/ |. m' _' `& A& P
triangular 30,60,90 min
+ }2 q9 @9 W$ ?/ n$ ]# ~; pu 60,30 min0 u4 p. m0 C* f& g1 }+ r

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in P_C, you need to send to die.7 u! t4 E* ^; L- J

& H. O- U% _8 X/ f; G" `, JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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, l. Q) J0 J1 f& k" [: JRemember 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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