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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,
  X0 c* H: i; a9 i0 a! l  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 m; M) t* p; }  Loads are processed by each operator for the following time:; l# H! o+ r% C3 d+ t
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 |! t' n) N5 R* b4 z  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.
. }0 H( ^/ o3 `% n  h  o, o  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 f% f) |7 E' }) A8 ]
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:
" n  }( R4 l* r4 _7 gAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
) ^1 N5 W* l+ w" g1 _move into Q_wait /*Capacity is infinte*/* X8 t: ^; ?7 `: Q+ X
move into Q_process /*Single capacity*/
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/ T  y( y/ W* n5 l, ^: T# suse R_A for n 60,10 min /*Resource A*/& Y+ R  D- ]8 V7 ]1 f

8 b9 G4 T+ o8 K- t; |send to P_B
8 j$ i/ L; J- Z4 uend
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, h4 H7 M; z! Y4 _P_B and P_C is similar
# V, g* f! V3 ]' f* Dtriangular 30,60,90 min7 [0 Q8 H- @4 t% h- l3 F8 N' j/ |
u 60,30 min% L; P" m8 I7 O

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in P_C, you need to send to die.) t5 y1 D$ v: u( R1 X/ E
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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.* t- S% N! C' m9 H6 b" r* B4 ^. y
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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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