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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,
; W$ H$ w! g/ b1 I; J, s. m  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.2 u4 f, m, G1 f- o' d7 ?9 d6 x
  Loads are processed by each operator for the following time:
/ L4 z% F- S9 d; y( R0 D, I  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ |* [3 @7 B* W  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.
  I3 {8 f, z: Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) y( |6 l4 P( G& fSend 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:
7 s+ m; g* o- ?0 t; rAfter running the model for 10,000 days, what was the average number of loads in each process?
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% ]  a* C# W, ~! s" R. b" w不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
" [4 J: I5 N) _3 bmove into Q_wait /*Capacity is infinte*/
  |, m7 ?9 O' s: t/ P, s8 _" C' Jmove into Q_process /*Single capacity*/" s6 u& {& x! }* x' {
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use R_A for n 60,10 min /*Resource A*/
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' p; g' u  z  ?. w5 _5 [" ~send to P_B
) w. t# {1 J  o0 kend
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% p) r/ S% K& W- Q; c+ t0 f: R6 t6 mP_B and P_C is similar/ L8 J/ ~8 G9 {
triangular 30,60,90 min
/ W: u3 _/ I2 B8 S0 s$ n: xu 60,30 min9 I. s3 N' V* i; q# @

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% R6 G0 K$ ?" W- }! u  W/ hin P_C, you need to send to die.9 Q$ S; s) L8 j( q

0 q' H# |$ Y, a, ?$ a# \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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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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