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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,: l( i" v! s" X4 Y
  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.
7 T( ]* s; ^7 F- S& K7 x- s  Loads are processed by each operator for the following time:6 e4 I/ L- `$ V  g! a, v% @9 X* ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( g* H% ^9 Z- s
  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.9 m  g% W4 X; a8 v; C" C
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., [2 X- x: d, U! w$ x
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.# \; H8 j8 A. j0 P1 x, I
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问题:5 G$ Q* u2 C3 j' r% L; r+ @
After running the model for 10,000 days, what was the average number of loads in each process?
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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! f4 [  d- O5 s2 Y5 M; W
move into Q_wait /*Capacity is infinte*/. `  f0 C  Y4 B3 g: x
move into Q_process /*Single capacity*/
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; [6 V5 g) h" s0 o" j% wuse R_A for n 60,10 min /*Resource A*/8 V+ q$ O1 K5 N- q

, b  b- }  M2 e) |+ d9 B* Fsend to P_B
+ k1 x* F5 N. [& u3 O6 pend
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P_B and P_C is similar3 e9 o! m- b8 h4 m
triangular 30,60,90 min, m9 Y4 i5 h5 l8 u
u 60,30 min; _7 ?. V2 \1 J. w% y4 ~, G) z
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in P_C, you need to send to die.) [! m& f) j- m7 q

5 {5 A- m7 h/ k: p7 jThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., u$ G* ?' i6 c" f

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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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