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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,
3 i* y7 q0 M6 x4 N/ Z( A  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.
8 `# ]+ H8 e& \/ W( c9 n  Loads are processed by each operator for the following time:, M7 m: Z+ y: ?) l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) ^1 L. J) h! m" |, i. _
  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 ]6 G' b( X: A7 w, |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; d- o# m% j5 R' G2 z, \) L6 SSend 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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( ]) Z( d7 m# n问题:
( t! `" e5 n% ]. _4 s5 q0 WAfter running the model for 10,000 days, what was the average number of loads in each process?  L. j9 {& o  L
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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
' {2 v2 v. [9 I* J. |move into Q_wait /*Capacity is infinte*/
2 W4 I6 d/ H4 _6 fmove into Q_process /*Single capacity*/9 e. U5 T& Y! k7 Z- ]

" y9 B7 g) E5 }" e- o' [6 R: w, ~use R_A for n 60,10 min /*Resource A*/
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7 C6 U8 T4 |) P0 k2 L4 {send to P_B
  _$ s' h- n* send
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P_B and P_C is similar2 s6 X  @& o  E& i1 r0 }! P$ b
triangular 30,60,90 min
# n! x: E0 q1 z: z% q( S7 G2 S( nu 60,30 min! g* s" N9 E# S1 C4 H
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in P_C, you need to send to die.1 U0 B4 L9 w& Q

* L9 m8 ^5 V' k" n' H9 F6 mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* m7 k. f* x: A  G3 [9 \8 O/ J

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. E5 \% d. U. k1 K- 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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