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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,
) Z' y0 J, {# C  F  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.
; M7 ]& r% {, j" I0 P' D  Loads are processed by each operator for the following time:
; s! {0 {! z; U! o; k7 ]$ p! r' j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 i  G7 A8 D. S0 H" U, h5 J+ J  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.
1 {3 A% z5 }( f; S! M# c, h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 ^, q1 W# }5 }7 H% x" ]+ ^
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.1 f% o. e* o& w# }4 o2 T3 n

" W1 e  p9 s8 }( S1 ?6 t' \0 M" |4 G问题:
( I: {$ O; N: h9 ~4 k: l7 pAfter running the model for 10,000 days, what was the average number of loads in each process?6 t8 z6 ?! X( @9 A3 j2 U5 u

3 ~* E9 g4 _( {3 s不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ u5 y1 I7 v/ C8 R& P( Y7 Kmove into Q_wait /*Capacity is infinte*/
/ B& y2 Z. D, f, l0 Wmove into Q_process /*Single capacity*/0 y+ t& r, _+ r9 L8 V' v
/ y; d6 B9 j8 s; Y. P
use R_A for n 60,10 min /*Resource A*/, T9 y% s) M7 d1 u' J- \$ a
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send to P_B8 N& b  L) X# L. W7 g3 r
end
6 j$ V* M7 o3 d1 B( |3 J  W
% v. W3 R% Y! P8 ^- L; o2 WP_B and P_C is similar
3 T% J  A% T: u, I+ f: dtriangular 30,60,90 min2 \' Q5 v9 Q2 }( R* E5 p
u 60,30 min
) l7 ]9 a6 y9 s+ T& j% P
6 ]% I$ N7 }: H, e6 N7 w! i/ E: P2 }
2 V4 \# Q- u& }- i7 q: `1 Pin P_C, you need to send to die.
* a& H2 j1 B/ W3 e9 n
; o7 @' R9 D9 F* f; 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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+ L7 \0 l- P# U  b! a6 y% pRemember 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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