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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,/ e4 V. k  C+ r7 E5 B4 _' e
  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.
" M& X/ V4 a& N. W  T1 W; h; \  Loads are processed by each operator for the following time:
3 Z# I# E4 k5 W/ M  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 N2 S0 c. b$ o' a: I& k  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.- H/ M6 B, j3 s$ H: w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., j' c6 f; _. `/ d" }% V1 S1 Z
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.) a: ^" X: `" `! n
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问题:/ u7 @- s1 C; O- Z
After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 i  w2 t) `  L0 z. C+ M
move into Q_wait /*Capacity is infinte*/
& \/ r4 c' Y* Amove into Q_process /*Single capacity*/4 L8 V$ w4 q" M- ~) p

% |- Z* x# q( E0 R) A# s1 Suse R_A for n 60,10 min /*Resource A*/7 i  w# w( V& o/ D: _+ I2 r

2 m& ?( l5 I2 L0 q" k( ^3 ]send to P_B
" j$ H: ]# q. d+ y; c. Oend8 i/ l; q6 K* t! t

) \, O$ h" [) S3 lP_B and P_C is similar
2 }! H2 m0 A4 {7 R- u9 Btriangular 30,60,90 min. n4 w( F8 N( h5 v/ r
u 60,30 min" F' H- i) ^6 V# ^- r( z
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1 c7 b/ G/ T' n6 B) u. ~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.* @8 L  `, `& Y) ~. J( H7 i4 T; h
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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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