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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,
  O! K" Q: U0 T' @9 K* S  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.
% t% J9 s+ u, x( w% J) N0 @5 @  Loads are processed by each operator for the following time:& v; l1 A) I: s1 }& m
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 h5 e+ v! J: V+ W* S
  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.8 s* s# E: t* G$ @
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 I+ J+ ~8 @1 k: G/ C+ `" H  y9 @2 b
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.
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问题:7 R$ g  A6 J8 j
After running the model for 10,000 days, what was the average number of loads in each process?& r, b# s' m$ S  m. |: B
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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' ~$ X5 s4 i$ e$ k6 s. u! q8 T
move into Q_wait /*Capacity is infinte*/
# C2 r) M: `! H: f' v$ omove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B* H+ w$ m; M; v% p. R2 u6 q& g
end
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/ ~3 e# W; L6 e) s2 \! BP_B and P_C is similar# e( h' t8 W- k) q7 G1 {
triangular 30,60,90 min% G( B2 h3 k5 G& f, j& o
u 60,30 min9 t$ N' l2 r+ [/ l5 c

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in P_C, you need to send to die., I9 w" P" y' T% P

6 l7 J& H8 w& J. r, E! Y$ VThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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