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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,
* p1 u' x- n/ @  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 M/ }8 n; O& Y+ F1 L+ i! W6 ~, i$ J
  Loads are processed by each operator for the following time:
9 G  T/ _& ?" p$ b' g) ~9 @, f9 }4 L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! t& n5 B/ w: k$ U3 _
  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./ [, _4 ]6 u0 j+ S! E
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; A& g6 {' h9 x3 Z( v. }* gSend 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:: p- }; w- [* t1 p7 x
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 arriving4 Q. I1 R5 T- G+ Q; y! F
move into Q_wait /*Capacity is infinte*/
8 S6 w9 e, c; Y+ I: Bmove into Q_process /*Single capacity*/6 L# H: ^( v. f! ^9 Z

$ x; h# c1 E5 E' Buse R_A for n 60,10 min /*Resource A*/* o, t4 o( D* S1 G5 O) c( \: _0 [

# E6 y- M+ E4 |% @' }& b7 Nsend to P_B1 j; M) q! B8 p# a' A# U( t
end% z; _6 K+ V7 j. K  j: `
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P_B and P_C is similar, n6 N  r+ w/ M) x# n
triangular 30,60,90 min
. h) G" I! T, Wu 60,30 min1 W/ T6 {  i  ~7 w
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; _  q& m# @, a) {% Zin P_C, you need to send to die.
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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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9 s' o, \- E+ p" D3 S: k5 \) b) fRemember 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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