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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,8 L7 q$ j/ G+ L1 m
  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.. c5 i8 c6 M7 L# q) I
  Loads are processed by each operator for the following time:" ~, l) `' d" J) }
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# I- K: d0 q1 Q# k! h6 E  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.5 t+ @5 M: O1 q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 s. e5 N7 W3 T4 lSend 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.: I' |4 @6 }/ S& |# R

& ]. x& K+ Z) r问题:7 e. e1 x7 m4 S# O+ L0 }' I
After running the model for 10,000 days, what was the average number of loads in each process?8 ^. [3 k6 Q& U! \- a  E9 r
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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. D) |- |3 a# G+ b/ C
move into Q_wait /*Capacity is infinte*/
; e7 @9 X# s6 u- E5 l9 l( umove 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, D( W3 ^5 c6 E
end
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P_B and P_C is similar- f3 W: k1 {& f: ?  L
triangular 30,60,90 min6 ?# U0 R; Z% W! ^4 F7 J
u 60,30 min
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in P_C, you need to send to die.
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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.5 `% b1 V, H- ?6 L

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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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