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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,
! `, X/ g, X9 [4 q8 z+ o9 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.
4 d0 J$ s3 Z! [1 c& d0 M  Loads are processed by each operator for the following time:8 t! U: B7 V- ]* M6 q+ k: \
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 a! v& Z7 }7 s! g- v2 N$ q
  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.
7 B& r- f! e4 U' h/ {$ J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 N9 A* }; K3 }  }4 y" @0 r9 p
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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' c: L, E9 }  X9 O( J问题:+ ^2 b# N. V  ?; Q/ u2 t1 c+ g2 a4 g
After running the model for 10,000 days, what was the average number of loads in each process?3 Y! q+ u$ k7 z% L0 ]: m! N; q& u) e
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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
: H. e4 W1 J' X  _) |move into Q_wait /*Capacity is infinte*/
* C* D0 V$ R( r2 _' imove into Q_process /*Single capacity*/
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+ j8 p5 z- }# h: X% K, nuse R_A for n 60,10 min /*Resource A*/
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2 g1 q% N5 W0 v0 K7 Vsend to P_B$ v3 w& d  b' j' q* h
end& J2 }1 E% [3 B0 ?% {, z7 x: j2 W
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P_B and P_C is similar
0 a0 u! t" {0 ztriangular 30,60,90 min
; l2 W, r/ P! G; |5 l8 U5 l4 Vu 60,30 min
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in P_C, you need to send to die.% w$ w5 T: p4 E7 g4 j- |

( G; ?1 L8 L" n3 i' G, h- ?: dThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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9 X& P( Z; U! g7 P( j8 ?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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