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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,; w5 z& C0 G) n. b
  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." s+ C+ Z' M: h
  Loads are processed by each operator for the following time:
; I7 h2 Q1 c5 x% }! E' [+ `  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.' B0 V+ L- P# c- w6 |# }5 ]
  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.
, u# d! _/ a  a  q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- q, e1 S! r' p; d: {8 S
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:8 x, E9 t$ E9 ^6 ~: T
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 arriving; X8 x9 u8 H8 v" g+ {4 s, [; `6 z
move into Q_wait /*Capacity is infinte*/* ]$ j* e# V$ z* J8 v6 G( E  C
move into Q_process /*Single capacity*/
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% Y* a& q2 Z( N- Z) z4 ]; luse R_A for n 60,10 min /*Resource A*/. d. J8 k& q8 [1 z/ [. t% p
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send to P_B2 H7 m$ l& `" h( ~
end
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P_B and P_C is similar
5 s* @. i* j3 Q- g5 b, _' \triangular 30,60,90 min0 \5 c' q, V: S
u 60,30 min! ^% K  Z6 W/ ^$ K4 @
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in P_C, you need to send to die.
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; S9 e) w2 ]1 ~9 V3 l" XThen 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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