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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,
  [7 M' Q) f. J, u  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.% `/ r0 E" q: b
  Loads are processed by each operator for the following time:' e* m( @8 G' V; J0 R+ ~; o& ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 O" c+ F5 G% h
  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.
$ s9 y( v9 e5 Q( y8 f2 R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# i. {  G9 i; I( |' u. D5 P- z
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.
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问题:
$ m* r( I5 k6 ^+ J8 [After running the model for 10,000 days, what was the average number of loads in each process?" C) b+ B% n% H$ }" V, U# p# ~

1 Y$ a9 A( x+ X8 {0 {0 r/ H不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 i4 L" K  m, C6 b! i+ G! lmove into Q_wait /*Capacity is infinte*/
/ \% D. V& O/ ]" o. @' xmove into Q_process /*Single capacity*// i. v0 A3 S6 T7 q, o- r
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use R_A for n 60,10 min /*Resource A*/& {# R) ]2 Z7 L7 ~( z# q0 A+ C& ^
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send to P_B
5 ]: M7 g' m5 X% K6 b2 T7 {/ U+ V" E- Jend; _* Z1 g0 s. N6 j0 S

8 V6 D6 m% B2 JP_B and P_C is similar
4 s1 ]9 K5 c& e$ ^8 ^% U$ y( A% Ytriangular 30,60,90 min% ~" k7 z" w3 q
u 60,30 min
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in P_C, you need to send to die.2 k6 m2 s) ]  x5 n2 v- E% E
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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.: ^- g2 n9 E) t$ P& n/ v5 M

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2 u. h2 r: V8 a7 d+ ~: k' aRemember 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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