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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,4 l8 m  |1 v( k5 t3 ~4 F
  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.
! G( ?) F1 O! J4 y3 p  Loads are processed by each operator for the following time:+ I8 r) |' \7 p; e0 R+ {& |& Z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 `  Y  G+ g' C, G6 }  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.
8 [, `) O9 ~% U9 @  I) p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 J  U1 `2 z$ \5 v  e
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., ~4 y3 ~3 F# @% b  W
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问题:' U, m& D2 P. r8 i" k8 O' j
After running the model for 10,000 days, what was the average number of loads in each process?0 ]" X' A6 Z8 r5 n2 M$ a0 `8 V7 o

/ K/ p9 D! L! v1 H不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, d5 s7 ~5 j9 R- @- N6 W2 \move into Q_wait /*Capacity is infinte*/: t- x7 s" L0 c+ z( w3 m
move into Q_process /*Single capacity*/% F1 \/ d' ?$ Y$ a6 ~: O! c

' l; Z) U9 q; R7 H$ q7 o3 Duse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar6 a. ~( B/ }; a9 _9 f
triangular 30,60,90 min6 s6 C8 q  r8 o. |) M
u 60,30 min1 n+ F4 r# i+ l" c1 w

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in P_C, you need to send to die.! e8 F! j' ^0 z* 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.
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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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