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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,* Z' h" K1 L/ Z9 d' n* l/ q
  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.2 u: g% i9 A! Z- F$ @
  Loads are processed by each operator for the following time:
' w3 k. o, D6 X; \, O  e# @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. \4 J; ^, g5 T6 ]1 P% J  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.
0 h& L' s. P- E% r( T& m  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 Y' q8 F9 l. T# f- n
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.( X8 H  m! x2 F% N  ?0 G0 v; z: B4 Z
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问题:
- `8 N+ g( P' w% D. r6 |" ?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 arriving5 Y/ m( w& \' Q) v# m7 h6 h; i6 X
move into Q_wait /*Capacity is infinte*/# V% G# ?( y+ o4 _9 I; V; `
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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) H% Y! \, r. j& s: L% i1 [P_B and P_C is similar6 f. ]6 |- m: i' r& X. w
triangular 30,60,90 min1 V4 W6 l" V* J
u 60,30 min! q  ~6 m1 I* d

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& a# i' p+ o! R1 `& W- j, j( kin P_C, you need to send to die.' h2 Z! ^7 _+ l9 a

) W/ n! I2 Y- w* i' D0 Z4 ]# E* pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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. i" {4 {! c8 |$ N: t! tRemember 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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