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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,0 K# y3 Y( F2 ~3 W) W$ `
  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.
! p% G  Q( c# E  U8 S$ I  Loads are processed by each operator for the following time:( q3 s$ s3 H7 T0 O0 ^
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; y: C- I8 X2 s  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.  g& k) A- R) h. i' c3 D  V
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 J1 j( ?) ~7 e$ Q
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.1 {2 B3 X) K/ J) I% R' N
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问题:
& i* `4 r0 l& m: r4 z& aAfter running the model for 10,000 days, what was the average number of loads in each process?
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7 S$ F! f+ y. F3 f& m不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving+ h' {9 V; o( f4 v1 n8 c
move into Q_wait /*Capacity is infinte*/
, I% }: O( X; G5 s# V0 H0 k$ W0 lmove into Q_process /*Single capacity*/, F+ q9 s7 n4 H, p

* V( w. J, Y) t+ ause R_A for n 60,10 min /*Resource A*/' n  e+ P, y9 M# }- s' ~

* \# G/ t0 y. i$ x1 K- Gsend to P_B3 g4 j  a  n( J3 P
end4 h$ y( I9 N5 O- n3 D

4 t! B7 y1 h5 m. x( ZP_B and P_C is similar1 n2 q" R: v6 {9 U, E
triangular 30,60,90 min) r* B$ p& w* i% p8 ^4 W7 Y- z
u 60,30 min7 t2 p+ M! n  D/ ^

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in P_C, you need to send to die.
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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.
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6 {! E# o% u% U# g: H% R3 RRemember 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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