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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,/ q  g  O, O5 ]) X# A2 K
  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.. `$ K/ e$ y; _: w) F
  Loads are processed by each operator for the following time:
7 Y) }- O5 p+ j5 x# p; Q3 O# j) p  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 |3 G1 E8 Z! j/ O
  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.
* z/ {7 N* h9 m6 q0 n  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& W7 a3 T. A! WSend 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.  C8 B, h$ s. ^+ l' r
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问题:0 `$ r: B, i3 [" m
After running the model for 10,000 days, what was the average number of loads in each process?* V& ~* w4 C% [2 ^4 U

+ V4 L/ W9 c, R7 t不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' W9 j6 u& i# m9 E" Imove into Q_wait /*Capacity is infinte*/
2 A5 B( _) z! O! Nmove into Q_process /*Single capacity*/
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) d5 O& N. b% ~* ause R_A for n 60,10 min /*Resource A*/1 q* ]: ?/ m2 A, e2 J7 m' b# m

& @( s4 q" v, f; E% T( `send to P_B
" f& R0 `5 d3 Uend
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P_B and P_C is similar
# b8 R; U4 \! K: S6 L" N0 }triangular 30,60,90 min5 J2 r% K- Y* j( N+ E
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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- y. E! L8 |, F$ CRemember 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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