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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,
! Y3 K/ m* W& O2 A2 u$ a  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.* `& p) i4 r- Z" o' L$ `' P* E
  Loads are processed by each operator for the following time:5 \* ~& _% M1 _7 j+ z0 Q7 c% O# j6 `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ f4 ~" [8 b( n- e8 R  M
  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.+ z& N7 \+ S$ L$ V% ?6 |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 A0 {; U) d: M
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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2 h. d" l# c! c6 W问题:: C4 d7 d9 B, d- O
After running the model for 10,000 days, what was the average number of loads in each process?
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; t( M8 o. A( L+ o4 @不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, u3 |* _( t1 b3 mmove into Q_wait /*Capacity is infinte*// n6 Z& _+ Y% O% I& K
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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3 ]" |8 s. q: P3 x3 Q- Gsend to P_B9 Q0 B" k# U/ Z, ?; x) k+ F
end
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, Q: Z. w# }4 p% O' }8 }, e+ IP_B and P_C is similar
) _' r) Y+ d" vtriangular 30,60,90 min
; m0 c  w0 u6 v1 g! A4 b7 Ou 60,30 min# T/ W9 a9 l. B% M

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in P_C, you need to send to die.
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+ _4 G* w/ r' h6 G$ l) |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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