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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,
* s9 L* ~: n/ D% f/ _' x. Y  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.) u/ P  F7 ?6 y" k6 {% ]6 d
  Loads are processed by each operator for the following time:* A' F: |+ W% L) M& M) l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 U1 w, t8 c( @4 ~0 v  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.# g( C$ X4 ?1 p; A9 K; k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ D  n8 b# i7 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.- n+ {: O2 j' r, y# x* m

6 }+ |$ }5 w8 ~7 m$ S问题:
6 s! a  l9 n) X' j! ~- |7 k4 bAfter running the model for 10,000 days, what was the average number of loads in each process?/ m0 J7 h8 z$ n1 I5 w

' T4 I' P  J7 I0 r9 a不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! U$ ~% ^* y! a! C* T- N
move into Q_wait /*Capacity is infinte*/. c# V, F( x7 D: @" }' W. z
move into Q_process /*Single capacity*/+ @$ i5 \. a# \/ d1 G3 F2 Z8 `
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
* y9 q) `$ i: b; p% J* Send' x: J5 d, N, h: R7 {. X2 ~7 M( V

. X' h6 {& U1 FP_B and P_C is similar2 E+ Y0 N9 \  p8 G* J4 A3 @( n1 C% P$ N
triangular 30,60,90 min
  H. D9 F0 z# s* I" k, J3 j  Tu 60,30 min0 H8 g5 m& v8 O& w; Z* f

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* E2 I" S  @' A; V: `+ kin P_C, you need to send to die.
3 y. |, M9 ~7 ]* U* o) e# g
$ y3 _7 l4 B  M' P0 MThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
# W/ j/ O& i/ A; H6 K8 I1 M: c- W5 i8 r

$ Z+ N2 O* y/ d3 f' xRemember 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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