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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,
1 \9 I% V* H" O  J; W7 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.
+ R+ X+ Q) B8 y. E+ J! h- W( ]# `  Loads are processed by each operator for the following time:
3 f" w+ t# ^9 i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.* X  l, ]3 T2 O$ ~5 h$ b
  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.1 x1 H) B3 m0 X1 L5 H% V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! H, o3 k5 n8 n( Y9 e2 f( }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.) I( P: G% m4 V' I: f0 `

1 {( y, ], v7 a3 ], K7 `问题:
/ C; J! d9 h+ J4 D& D- ]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
5 h" [4 e, x$ S7 G- amove into Q_wait /*Capacity is infinte*/5 V2 b. s) Z9 Z  i4 {2 {. |& v& Y
move into Q_process /*Single capacity*/
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6 F; Z+ d% |; o: y* g: K, G, ^use R_A for n 60,10 min /*Resource A*/2 R$ h& k( f6 t  o+ M3 n5 i9 G

0 O9 r- N) q8 @# K' Ksend to P_B
3 d7 ]8 v8 m( I0 C) g! w" q+ Oend+ C* N4 n! l! i# s$ {7 l/ j

$ i: ?/ f% Q) j) qP_B and P_C is similar3 j% f4 V# `6 }. N: r
triangular 30,60,90 min( J2 ~2 i+ ?5 \4 V7 i9 s2 o2 y
u 60,30 min& Z) i( f# L) i0 f4 t

" B' q* l4 p4 A0 |- Q6 B) o5 [4 L/ o5 z9 H- z
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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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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