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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,4 n+ m0 p5 ~5 R+ Z' L2 |% v7 W
  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.
; `. \# o" r9 j, f( ]1 A2 y1 u  Loads are processed by each operator for the following time:
/ ~" g3 p% m( N% G4 o* n4 E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; T# a  p4 X$ t  T) `1 x  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.
" Y' H$ m6 O! b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* x$ \2 t; `3 X: o) \
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.
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问题:! k- g1 ~7 c9 R; d8 l/ o+ s
After running the model for 10,000 days, what was the average number of loads in each process?! L8 a5 M8 H; w; m8 u3 n: U

6 j- Q" I- Z5 a1 B# K不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 ^. Z6 R  A/ N7 |) c2 j* }
move into Q_wait /*Capacity is infinte*/
+ b' Y: V# c1 c! G! Z( |move into Q_process /*Single capacity*/
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- _; M4 Y# |  guse R_A for n 60,10 min /*Resource A*/
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! Z3 r- m% Z6 v/ A5 a+ hsend to P_B
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P_B and P_C is similar5 g! f3 X6 V% N0 v+ W3 g7 m1 q
triangular 30,60,90 min
# \* E9 d! u, ^* G8 \u 60,30 min1 \5 J: p& C; G, ~' ~% b1 }
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in P_C, you need to send to die.
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8 {$ `5 F& n) ~- ]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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