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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,
% ~: Z/ T9 Y+ s: ~# e- h7 J7 p  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./ Y" l  C! |* P- Z: `4 Q
  Loads are processed by each operator for the following time:
5 U( }, |8 Q& O# h5 h8 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 @5 y+ [1 A2 w2 ^2 ?  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! u, C* ], w2 R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& M: D- P  o' {; Z; u
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.  n1 b0 X& s; j% T( O9 a  k& f
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问题:
; f% [! J5 j1 u' H: O- P% E! h( XAfter running the model for 10,000 days, what was the average number of loads in each process?
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; T3 x& u0 F5 t( _不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
- P4 N3 `$ p  ]0 {move into Q_wait /*Capacity is infinte*/: B; u( \5 r7 C; `! Y; Y  s) ]' @
move into Q_process /*Single capacity*/; ~! Q) |5 E: V2 S5 X( ?6 Z

( M$ }3 ?% M' h! g8 D2 kuse R_A for n 60,10 min /*Resource A*/
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send to P_B% A- Q! q5 B+ t& Q" l: i' ]
end3 B/ X+ a0 ~* Q

/ {9 ?3 l: A# t6 s; M- dP_B and P_C is similar* O* B. U, Y3 O! L- i4 x
triangular 30,60,90 min
: c0 ]$ j3 ^# u4 K7 }  q* j9 n* r- T# lu 60,30 min
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6 t7 K9 i, `( u+ h. I1 Q% [in P_C, you need to send to die.
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2 U( K( c% G$ r5 y) w7 `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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