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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,
8 c& W/ k$ V+ c6 C* G6 o  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.
3 n* Z( M* w- `& j. Q3 d  Loads are processed by each operator for the following time:* I  u3 c2 e7 v  z5 F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% `* u: M; ~, M7 o0 w7 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.
% t( W* ^1 b- [. V6 m  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 @: T- Q7 G3 U2 N. g/ q0 ?
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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: K/ O( z1 K! }+ Z+ a问题:
+ F3 _# X$ V4 I9 |7 m, D( F1 {After running the model for 10,000 days, what was the average number of loads in each process?# ^- h8 K. [! M

5 O  q; R' j. n- Z1 n+ i( \不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving. a) i2 ~1 m) t
move into Q_wait /*Capacity is infinte*/% {- L6 J7 G5 G/ A
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/! G5 _8 l1 }7 \( \: n
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send to P_B* y) ~* O1 ^1 L
end( w2 I8 I1 @$ L: E+ w/ |# g
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P_B and P_C is similar
: M( L# g& l2 e" Ntriangular 30,60,90 min7 R: ^! i8 C, ~6 Y+ v0 _* ]
u 60,30 min& }0 Y7 ~# }! C  L
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+ b  {8 ]8 ~& X# H, lin P_C, you need to send to die.- w" y* t0 U! {  |

: G, K4 \2 E+ f1 d* PThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* p2 [1 D8 w& s# M

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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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