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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,
, o9 N! \7 J: k% p& 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.7 O/ }2 P- B2 ]* |
  Loads are processed by each operator for the following time:
5 i& m  O3 N2 |0 |3 H, F  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ ?/ l6 P) T( p. b0 P0 F) o- W  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.+ H) P0 U/ e: V5 ?
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 e: f/ B8 ^3 Z. y" t
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., C/ b. N, O9 Z9 j4 a5 u9 d

! L9 Q' S0 z# t7 M问题:
* v" |) q3 W! k4 u( B4 VAfter running the model for 10,000 days, what was the average number of loads in each process?; D- L" Z# M- ]" x& M
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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
! G4 G$ h+ n# ^% s6 T( k6 Xmove into Q_wait /*Capacity is infinte*/4 t/ O+ G- j; q/ M/ G  x7 \
move into Q_process /*Single capacity*/- i* F- k6 s! q
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use R_A for n 60,10 min /*Resource A*/
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send to P_B4 c% h3 p, Q1 ?1 y2 _. m
end* n8 S$ R- r2 X7 u! \1 S* e) ?
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P_B and P_C is similar
# X5 @) o( ]3 ^' P* I. ktriangular 30,60,90 min
8 V- U+ [7 z; T) Z& e. pu 60,30 min
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in P_C, you need to send to die.2 ]  X; N6 K+ X! v, y

7 L8 X- b: }/ n; {; V- 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. |1 U+ r' Q/ {4 N" [$ t' HRemember 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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