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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,; T* w& T. [: s% z! _! e( D
  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.
! _+ L7 x8 }" X! a/ O* _  Loads are processed by each operator for the following time:
9 ~; l0 r: M: a8 G) S0 |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; e. u9 ^# R( f/ E; \# h9 K; n" J
  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./ S+ |5 K8 Y/ Q: q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( |. P- z% t$ x* M# R" L  e0 ~
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:
2 F& N% U. b  ^4 R! y  q- s; WAfter running the model for 10,000 days, what was the average number of loads in each process?3 t7 h6 C7 C$ K, c) x5 d: z
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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
  `- _; s: W. N3 cmove into Q_wait /*Capacity is infinte*/" y  J2 A$ A4 r3 c4 L  y
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/8 m( H- |  n3 D  O2 q% F. F

) A) Q. A  c( e( I! Rsend to P_B: b4 E& o2 Z/ o3 r* Y
end
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# B7 n0 y. D: b/ r2 e- {P_B and P_C is similar
# K/ J( e+ c, i- f. A5 atriangular 30,60,90 min. u$ x. m# O2 M3 {# f8 s
u 60,30 min8 N4 j0 {8 W! @/ |
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in P_C, you need to send to die.6 u. K) {# i2 m! S
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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.* \; P: _! p  x
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# E2 l, }3 r5 T$ K! k3 nRemember 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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