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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,0 i, D0 _6 q, e# x" i
  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.0 Q( @) {+ F$ k, {' n. M8 }8 g
  Loads are processed by each operator for the following time:1 ~6 B/ @( I3 h6 d! \5 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ s: I! A0 P* Y  k* w0 D7 ^  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.! e) j, `8 |/ U1 g! n4 V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ B, `2 f& s; i0 a- j
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:
& y( B% M* A% O+ o3 B4 @# }4 TAfter running the model for 10,000 days, what was the average number of loads in each process?
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: W' w% _/ [+ K! T不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ D  Z5 N1 {# U0 a' D% o! q, S3 u
move into Q_wait /*Capacity is infinte*/
; L! t/ w5 F3 ?move into Q_process /*Single capacity*/
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0 u* v" s2 n% O! c- u; C4 w5 Guse R_A for n 60,10 min /*Resource A*/
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send to P_B/ v, Q6 z1 }& d  B
end9 h: r$ Q$ x+ ]4 }

' Y8 s# n: g; F5 h  CP_B and P_C is similar% L$ u; g* e0 W& p
triangular 30,60,90 min& w" `$ N. I$ G, q4 U: q# V0 F* G
u 60,30 min) T* p- I$ O, Q$ H$ }$ ^0 ^) I
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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.
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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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