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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," [0 h% Y: N$ w$ w
  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.
, n+ o4 J* J; |, N% D: `0 r8 E  Loads are processed by each operator for the following time:
: P  a6 A" s& P! N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- k" U+ n4 L. }$ v
  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.; r# D8 Z+ d9 R
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' P: v; O, d9 m+ n) [( I4 V* pSend 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.! r  _) M7 c) j0 p) J: z
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问题:
/ w, K. {$ i' p! n% G' K! OAfter running the model for 10,000 days, what was the average number of loads in each process?8 g5 d! R; K- J) `. }% U
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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: V" n/ p5 n0 @
move into Q_wait /*Capacity is infinte*/) N& w; r3 s* g
move into Q_process /*Single capacity*/
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( u+ ~5 e7 b9 H/ e- Kuse R_A for n 60,10 min /*Resource A*/$ [# f" j) @1 I. E/ i# ^" Q2 D
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send to P_B3 s* k: @- J- i# \% P3 m
end- r6 a: o- P1 H( U( v. C
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P_B and P_C is similar
' w: }# m2 @7 M# Q2 N1 F  ~& Ctriangular 30,60,90 min
- N+ B; c5 t8 e  N/ gu 60,30 min7 [  A) |4 D# _7 `. M

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! j* M1 f3 B/ `' |) G# Qin P_C, you need to send to die.. D# C# |1 e: F; H. y

5 P) P0 G1 V8 |& v# f  [2 cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ ?. c+ o" R+ y
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/ W/ N  R- N2 q4 XRemember 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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