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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,* [5 c* g( P3 n# k1 x1 v, A( K7 |
  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.4 k* [9 F8 g0 S! v* x
  Loads are processed by each operator for the following time:
9 j! R0 h; g3 ~$ g) L+ x' C+ y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
. \2 S0 N9 r& B9 F# @6 R  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.
& l' s7 u3 n, R/ j9 p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." E) t: `; l6 }; T( \
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.% s" V3 a- e8 Y! A
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问题:3 L$ K5 N8 e: N7 v9 P
After running the model for 10,000 days, what was the average number of loads in each process?( s8 ]6 h2 f3 _
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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
( `* U6 }: X) ^# omove into Q_wait /*Capacity is infinte*/1 [" y" ?) {; \6 C
move into Q_process /*Single capacity*/
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% X2 M  q7 Q: z6 @use R_A for n 60,10 min /*Resource A*/% I8 T; N, F3 f4 G9 u" {( {
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send to P_B0 h4 B) I- u) N7 ^( v; j4 D9 k( E) A
end) B- ^( Y5 X& c3 C

, q) ~5 R! b  {# J" rP_B and P_C is similar
. O, L* L! A  [- q  W7 ntriangular 30,60,90 min
$ J4 ^. n$ R+ a5 s# uu 60,30 min1 O# x/ j$ o& h) J, \! Y# s4 e
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in P_C, you need to send to die.$ n8 O* ^! }& S7 s2 @/ q' i

' ]; P* T0 G6 X$ W8 HThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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1 ]7 ~# c1 V# Y) O6 w  E8 QRemember 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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