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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 E3 L" p# k% O* U; U& Z& _  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.
! f- o- \. j; e$ y, C  Loads are processed by each operator for the following time:* ~  V4 X; {( K! ^
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! N7 E$ n; d# u* f  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.
5 g* g* W6 A7 |) V  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ B( h0 }! {2 @- vSend 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:
) f$ |% n6 n& Q% [* w" |After running the model for 10,000 days, what was the average number of loads in each process?
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/ m6 [- V# b. p3 u) z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving* m7 A1 a7 J+ L! u/ T! |: ^
move into Q_wait /*Capacity is infinte*/: v( s1 ?" O6 z( i! l1 q& @! ?% M! ?
move into Q_process /*Single capacity*/' x2 o% Q' ^+ \
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use R_A for n 60,10 min /*Resource A*/* ^# o0 q! C5 [% g% D/ s
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send to P_B
" M1 ^6 N7 L" f3 |. Yend/ K. D* C/ O# L) z. I
  E  Y5 V% d6 p1 Z/ I% d' [8 g' }$ Z0 o
P_B and P_C is similar
7 c& R8 M9 k" f; [+ ztriangular 30,60,90 min
6 u/ p! b" {  _6 p- T; \5 ~u 60,30 min3 `% }- g- T6 j: b/ Q

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- U6 }- n' D1 D4 t7 K0 d6 hin P_C, you need to send to die.
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, D' I& p+ P; l, I; l) j7 sThen 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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