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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,
. r+ g% B) I& V6 Q5 [3 v  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.
1 h, |& I2 y) j6 w7 V  Loads are processed by each operator for the following time:- f2 X. ]; Q) P* U: L0 P) ~1 l9 w+ E
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 S" }/ \+ |8 \! }3 C. k' W( [! ?  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.
) X$ O  q3 Z/ q6 q) P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
) O0 v2 o7 t& SSend 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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/ ]7 }" p- E$ u6 Q问题:
& q" o) s. f/ o6 Q! U2 d! fAfter running the model for 10,000 days, what was the average number of loads in each process?
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9 A  E' q- |- w3 ^$ u1 ~4 x: v不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* n& I8 d, |% T  x$ W5 b5 fmove into Q_wait /*Capacity is infinte*/
- m' p( }- ^0 [" P7 I, f/ ?move into Q_process /*Single capacity*/; W: Q0 t1 W2 T8 c* h6 Q+ t
2 L  C8 I2 [( z3 s, F' ^6 s
use R_A for n 60,10 min /*Resource A*/, y0 H, g0 x8 a; J: v

$ c+ y7 B! n4 @4 P) Ksend to P_B
4 C4 ~2 b$ K3 u  M0 w0 mend: N# U% G: K3 b" O$ U

- d; i0 I& d# @P_B and P_C is similar4 I- V- v% ?! p; ]# a
triangular 30,60,90 min
( P  G' G+ ]( H9 z0 L* K, |5 yu 60,30 min* M3 u" `% A0 K& E. m

8 j$ v& f8 E2 `7 @+ J2 X: C
7 y6 H+ e1 W+ W  zin P_C, you need to send to die.
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6 f9 A) i- C( LThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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- }3 h7 C! q. B- z. D; }1 @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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