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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,7 |1 K7 s* f* W6 E- y0 V) `) ]
  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.5 {6 e; {) d( p3 c
  Loads are processed by each operator for the following time:# A& f- V# r! c1 ]7 j: W! h4 |, r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ y0 z7 |$ F# W# a  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.( O/ U5 x, Z/ ?  t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ q( f, E) A5 x8 z! x6 u! V/ I) xSend 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.; Q9 T' ?2 l/ ]3 k* G, M6 @( N
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问题:
: I- ^8 a  ]7 k) q. ?! W, ]After running the model for 10,000 days, what was the average number of loads in each process?
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( R  |4 Q; _; x% [  G; Z; P% `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving4 a* q6 K# p2 p0 g; T$ \6 K% E4 ^1 u' x
move into Q_wait /*Capacity is infinte*/
! G5 @4 L7 ?; r: D/ }1 n5 g, b4 kmove into Q_process /*Single capacity*/: d1 x1 I( F4 M& z/ q

# ?- h  H( m( X! cuse R_A for n 60,10 min /*Resource A*/1 R. [& M( ~( y1 s" v

+ s0 D  z/ M. x& X- Ssend to P_B
5 G: S: t  K- [: Hend
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8 F# o; S" g5 A! k1 o, y5 v' AP_B and P_C is similar
8 K; h, t: \9 u, h* \triangular 30,60,90 min
+ o4 `% y3 ^2 m7 [u 60,30 min+ x- A6 L( J3 \
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in P_C, you need to send to die.
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1 c6 L" K6 N: s9 Q! YThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.- p! O% A: D4 ?0 L9 [1 Q, N

  u6 F$ I" T( ^
& u0 }5 d+ m3 K3 ~. y4 B1 y$ 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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