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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,7 _* V- z2 u( x+ y% _  D  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.( ]8 ~) F* F3 _7 ^$ L1 [) X4 J
  Loads are processed by each operator for the following time:
0 y, G! V+ E" f: |7 g0 S7 F$ U  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) G0 a" A5 @& m; G3 ?4 }: ~
  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.+ r4 e# e" N: b  {3 q: V1 w3 U
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
; `9 N1 E1 z* C  P/ v/ Z8 ?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.) J4 B; r4 W( ?' e2 t+ O. m6 z

/ y5 L: @! ^2 `4 K' \问题:
4 S6 m" i0 P6 ^- w5 B3 jAfter running the model for 10,000 days, what was the average number of loads in each process?) ?7 q% `  _" g! U6 @
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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: X6 {7 R# u2 ?: a7 C
move into Q_wait /*Capacity is infinte*/6 ~9 N: ?/ p$ V
move into Q_process /*Single capacity*/3 o: a8 ], V; b0 t

2 x& V7 k. r9 `. a! ^use R_A for n 60,10 min /*Resource A*/
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send to P_B% m, K+ o2 A3 u3 t6 ^
end! @3 Y% k# h/ v

1 c; q+ X' U* t9 E6 qP_B and P_C is similar
9 p8 {7 M! d# |+ d) Utriangular 30,60,90 min
% i- y! A2 W7 H7 W! `9 q+ du 60,30 min
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in P_C, you need to send to die.
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. }- E# {* h2 r: c; t  tThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 h3 G# ]3 s4 n! t# j$ t) {

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- x1 O# [' ]) Y; }0 E' l$ QRemember 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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