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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,
9 ~( d  ]$ t$ W& E* 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.
3 k8 x8 q4 @% w  Loads are processed by each operator for the following time:9 f4 p# u$ b3 g: v" f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- d2 I8 B0 i- w: C7 ?& }6 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.
) v" c$ s* ]5 ~) w% ]; b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., H  A" u  ?( B4 I4 C2 I- J& n% 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.: m$ m0 k. Y% S
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问题:
6 k5 ~* ^$ V' @9 q2 M5 w7 dAfter running the model for 10,000 days, what was the average number of loads in each process?# @" V- e9 B8 }4 c$ X
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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 arriving5 r3 j, m. H. V- v$ r0 W: F- ~
move into Q_wait /*Capacity is infinte*/
. q! [3 X) c) l0 N  ]move into Q_process /*Single capacity*/
9 ?# g- B) Y8 @" |
6 T  G3 s% O/ R1 cuse R_A for n 60,10 min /*Resource A*/* h" l; i' o% z& K- O' e" b6 _

1 T7 s9 r3 L( H' I8 Psend to P_B
" [0 Z4 Z5 u, S- ]0 p+ Y! Nend
; \9 T4 K% D( E5 d' @! |" q0 ~; l- q6 d
P_B and P_C is similar
' e3 _! N' i  xtriangular 30,60,90 min
; U- c- K- g- M+ W7 Q+ Qu 60,30 min) ^, A5 o! @* g# `! U
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0 T4 ], `4 A3 {& v  ~in P_C, you need to send to die./ ?7 t/ p' _* r# F8 ^! x

, x4 L  B3 X: E1 kThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 f% [  ]4 g1 m" m; g* m3 @2 d
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3 T7 V& m7 t; e* j- ZRemember 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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