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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,
2 c# J, M( d; 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.
4 K/ n! S9 u8 p/ z$ L. H  Loads are processed by each operator for the following time:
  L3 W3 t8 ?, e3 K/ ]: o  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; ?5 ~2 f' r4 o7 c. R7 e" X+ g
  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.
% Z0 p2 A9 C; f, k0 n- x' D+ b7 ?& l  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  D+ I. B4 p9 V, R6 j3 G4 t6 l' K- x% ASend 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.- F( E/ u5 X* l3 b. m. O6 g# s
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问题:! d+ j: A8 I* ]1 }3 m# b  M
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 arriving3 K$ C  G' N/ d& k+ b* ?) r' Q7 c
move into Q_wait /*Capacity is infinte*/
( q- T5 _9 P+ C" y( V- Amove into Q_process /*Single capacity*/
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) h" N7 P0 P  ?use R_A for n 60,10 min /*Resource A*/4 e8 I4 y8 E/ ^7 I# k( d
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send to P_B
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8 ~4 c+ ]+ Z( {+ WP_B and P_C is similar
1 I8 `5 O; J: D8 X+ E, f+ ltriangular 30,60,90 min
4 j" _) m# g" {; l8 v2 Nu 60,30 min. s  C/ V9 ?. U0 C; h  V4 O% O

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in P_C, you need to send to die.- u6 i8 R% {; Z+ n2 m
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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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8 v0 m) c2 V4 e6 `- b. KRemember 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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