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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,
. Y* {9 \  ?  O" K- c  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.
$ Y+ |' R' E8 s1 ?" d0 V+ _4 o* I  Loads are processed by each operator for the following time:) G2 x7 K, o# I1 k
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 @# ?6 Z5 j( L* m: A
  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.
% D7 J8 k8 r+ n  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.5 u( U' A8 |( T3 O; b
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.% C/ F& \  M( ?- `" I5 r' k7 R2 n. i
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问题:
0 e9 A0 `1 x: hAfter running the model for 10,000 days, what was the average number of loads in each process?& a2 J  S; D2 ^
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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
( U; f) A. G  V5 v, V  rmove into Q_wait /*Capacity is infinte*/
9 ^- o% [* R9 C* G' dmove into Q_process /*Single capacity*/
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  K( d. d8 y& {/ Uuse R_A for n 60,10 min /*Resource A*/
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send to P_B
/ Q8 V' ?! c% n! jend- e5 R( o. o$ Z+ x
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P_B and P_C is similar
" |6 D% W; D$ ~# F0 F$ \8 rtriangular 30,60,90 min- E: r, ~! S: O( v- }# l: f* [
u 60,30 min
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, a( Q0 ]/ Z0 O( I8 \in P_C, you need to send to die.+ ^$ Z) C5 M0 R: p7 f" R5 B: ^

+ ^8 \$ ]& l4 ~, O7 ?Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.$ h/ Y. B- I8 J& U
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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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