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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," ^: x  P) E) n9 Y% ^" a! C
  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 b# c& Y8 ~9 Q3 u  P  Loads are processed by each operator for the following time:+ t7 N( P% U7 w" j0 y' a( g/ h) i
  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/ N& {; I3 {  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.
5 X& Q1 J/ w4 f7 ]- b- J; T  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 i- O3 Y8 X6 u8 q: T: qSend 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:
8 ]$ I+ q7 i# Y4 TAfter 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
; A# z. B$ k$ b$ B! I( v# dmove into Q_wait /*Capacity is infinte*/
3 w  S9 J0 v9 J! f5 A2 H+ ?move into Q_process /*Single capacity*/% ]# F1 n% z3 }  s
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use R_A for n 60,10 min /*Resource A*/- L3 @( V% w( U% I

  e! y7 ]& L: a6 _! n7 msend to P_B
' u! V* d4 U7 `+ w+ ?) v2 gend
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! Q7 e% Q& u- u% l" i5 AP_B and P_C is similar8 m& |# g4 w: L! l7 X0 c9 i4 O
triangular 30,60,90 min$ F! l" L: X- w9 f# Q4 P9 l3 i  h
u 60,30 min0 w4 y* z# G; o; i% u

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1 S+ {+ I8 R' k: ?8 D- d1 qin P_C, you need to send to die., b+ y$ I5 M1 p/ \9 O' n
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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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# ~; ?% t: F" L% J- m+ k4 M; @7 [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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