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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,
; k$ y. M+ E) R7 n# t. N( c  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.
  ~& }  w+ Z( D) O" \5 o: T. I  Loads are processed by each operator for the following time:
  `; U' c( b7 R7 j  P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 t( ^! _3 R0 v" r/ o  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.
7 _) D8 @  p4 B' U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- ?, d, V9 c* g' m5 T1 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.4 _0 O7 i! M/ m: L9 u4 |" u

( M; ~5 l" H3 ~* u问题:
% O' Z$ E% v8 gAfter running the model for 10,000 days, what was the average number of loads in each process?/ `  p, F# c8 g6 L$ }

+ b5 N& H( A8 b, K2 w2 K1 h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving& R  c) q1 [! T) c* K# N
move into Q_wait /*Capacity is infinte*/
- m; E* c+ m) I0 g0 O7 p. Ymove into Q_process /*Single capacity*/
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3 }" w, t' i/ ^& R) w) P- Juse R_A for n 60,10 min /*Resource A*/
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0 Y6 w6 g/ Z, Qsend to P_B
$ k* t" ]; ]4 r- c8 zend
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P_B and P_C is similar1 S/ G. E5 _/ L$ W* l& j7 r( B
triangular 30,60,90 min- _  f8 ?4 K0 v1 j& {7 U9 g* K! H
u 60,30 min
# Q  R2 Y4 |  A
& |5 e. u" x6 v1 M6 T- W+ \- C; u; X  w* y) \9 C6 [
in P_C, you need to send to die.
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( S, W9 g( {0 }$ u* u; l6 DThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% I8 B. w. ]" t1 p; ^7 Z

! D8 H0 `" p/ U$ t5 d* ^" G# C9 \, W' V2 L6 y
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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