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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,
1 H" V2 Y( W8 N0 H% ^  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.
: z6 V$ C. z0 t% N" Z8 k  Loads are processed by each operator for the following time:
2 I7 V* l+ f2 q& ]  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; A& H% V5 Y" h# f) f( z8 y+ {  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.8 f3 u8 |/ i4 p! V  ~+ j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' k: L, n1 l6 r2 ~3 XSend 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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  }4 ^/ e0 W  q# p问题:8 _4 x0 I+ u+ @9 L9 Y5 |8 S9 E* a+ F
After 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
. e4 ^- w( K$ c( A7 Rmove into Q_wait /*Capacity is infinte*/
, e: u+ {8 s6 Mmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/$ w/ t, U% Q0 o1 |+ v5 l, z3 K

* O" C  J3 B! f' ~6 }- r8 P" Rsend to P_B
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9 j5 Z  E4 O9 h! \7 t: f% HP_B and P_C is similar
1 S, t  E" I: K6 K) c  E# D* Ytriangular 30,60,90 min1 g' _! B( D- h% Z" P2 A1 I, [
u 60,30 min
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" j" v% \* ]9 ?# P: M2 s8 `in P_C, you need to send to die.
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- o: Z6 R' y7 P! z: s7 FThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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* Z; \6 W  c! f& J9 gRemember 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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