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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,
" x, f8 ~+ Y' j7 ~  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 P( o5 h! b% p1 j# u1 q7 O  Loads are processed by each operator for the following time:
6 m5 ?) F6 l. E2 L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 X: L4 x: J4 N' v, F7 Q. O+ 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.
& U% W8 ]- J$ G, _! f3 H  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( L, [1 b9 r# J! @9 f' D: C2 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.
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# x, B8 L& L9 M4 N问题:
8 j4 |5 b( ^3 b% |; I* ]After running the model for 10,000 days, what was the average number of loads in each process?2 x5 l5 T; _5 f# |( a- X

0 k0 s! |* s( w' m. E6 W8 p2 g不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& D$ X6 R1 f6 \; K7 F, C: Jmove into Q_wait /*Capacity is infinte*/1 W0 t5 H  J- f5 S7 v' X% v
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/, |0 e# p5 d* A. [* E7 L/ q( E7 ^

2 X/ S; e) F0 Gsend to P_B
% X! C/ j1 J' t- c( Cend# ~3 R* y, t# S! Q) C1 M

" R* T- @# h, w: VP_B and P_C is similar: q# q, g: t; l* W3 b4 b2 z9 `! W
triangular 30,60,90 min
8 \6 i' w% ^2 s. v+ Zu 60,30 min
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in P_C, you need to send to die.- ^9 f  x% x& t7 \# W  A
4 J3 o% h: Y: F* y$ M( a
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.4 B( }4 E9 U) v  z- c9 R

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9 N9 I" ]5 _, _- l0 Z! Y0 R, `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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