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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,& ?4 [# l! J2 A* {6 a$ {: C. g, t7 n
  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.# F' `. ?0 d! K- [+ |1 N' {8 j
  Loads are processed by each operator for the following time:
+ d* U9 y, ^5 P+ Q* e+ j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. a$ |3 l5 u" G. W- i2 S4 P' t/ 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.
3 b* a( I- Y% h- m: B. p8 ]( G  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# }, m* Q! b+ `
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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: H+ R3 P, `+ J- h" F- e) b问题:
  @1 g# Z/ k+ {2 |3 N/ @After running the model for 10,000 days, what was the average number of loads in each process?
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( ~7 q% B/ e: e# u/ b9 \: O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 c2 q; s$ A9 x" p/ Rmove into Q_wait /*Capacity is infinte*/
: X: O1 Z+ `8 O/ D7 O) Fmove into Q_process /*Single capacity*/1 G3 F' s+ c! U, k) Z

/ y6 U) P. B- b7 muse R_A for n 60,10 min /*Resource A*/* }5 C" U! z: H0 C2 _2 P8 U2 i$ l, E
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send to P_B
9 G" |, y" R$ aend  M/ P  ~8 B( @0 O: g; _% Z
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P_B and P_C is similar
& \6 C2 i5 _1 C4 Otriangular 30,60,90 min
; g4 q7 h3 I" D3 X6 Mu 60,30 min
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% P, L! G! ^1 W. Qin 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.4 O/ T7 I; L8 ]

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! `9 I. `0 h: |1 ?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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