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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," |+ N( R( V+ @! O- _# ^7 N  o) K
  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.
* [+ h0 ~1 l6 s- v  Loads are processed by each operator for the following time:* N  q4 X. f# e7 n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., B( o: w  E6 G3 K. N! [* O# W1 z- _
  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.
2 m# B4 D) [& I8 |9 C. F( ]: s  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* Z3 l1 V4 \- P6 T1 [4 V
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.7 s; G7 A9 L: i  R

9 A( s# t* b' N! }6 y问题:
( d( p, B' Z  ~6 @( bAfter running the model for 10,000 days, what was the average number of loads in each process?- e4 s$ E7 L, }5 F7 f

) d- \- P2 C6 Q$ 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, k* ]* Q9 y5 emove into Q_wait /*Capacity is infinte*/, u6 T1 ^+ N* |# Y
move into Q_process /*Single capacity*/
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& e: V, d) y5 l; m+ Ause R_A for n 60,10 min /*Resource A*/
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, g- @% K  B2 P1 Y1 _send to P_B
4 d- Y. K1 G4 Q) M; uend
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P_B and P_C is similar
" y  U' b6 s4 w9 |8 k: itriangular 30,60,90 min
  v$ a* D1 h7 |3 y3 j" du 60,30 min
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5 P1 E1 ^& q5 e, d9 I8 z" p! U( O
6 u2 @+ Y( J9 _* v1 K% Zin P_C, you need to send to die.
6 W% W2 V/ {1 e) k/ Q8 E& u) o( q6 g
4 B- d, e/ \# n9 w0 ?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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* M, `# P6 w2 w" 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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