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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,6 v! V* i4 H4 d, G3 U
  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.2 k  y; C! W& [3 [3 h  n$ @
  Loads are processed by each operator for the following time:
' x8 V: ]- ^! O  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 P$ C  G9 U0 B  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.
# ~( o5 X, ]1 C3 [4 C% Y9 h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& ?6 n; d. V5 x. [; D9 ]
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.2 [; M$ c" r; \& Y
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问题:3 K' R0 q" t  R2 p
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 arriving  e, ?6 F  C& H1 o$ A$ c* w
move into Q_wait /*Capacity is infinte*/
; o7 P( i2 w& _  N7 h& Amove into Q_process /*Single capacity*/
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9 Q8 x: O, ?: I* E9 E  Zuse R_A for n 60,10 min /*Resource A*/
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+ G  i- B6 [- [- usend to P_B
. k) P* @3 E8 ^. f3 w' Fend* a$ y0 C, f7 |) E9 C) c" g
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P_B and P_C is similar  U- `  M& S4 O- p$ j
triangular 30,60,90 min: V# X# d& S. o( V1 Q
u 60,30 min0 D8 @6 L" x3 S+ R

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in P_C, you need to send to die.9 W$ M& D. K3 Y! O$ Y7 `
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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.
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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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