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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,
1 l5 |, E+ V" H  B) ^5 D  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.
1 M5 J0 Q9 @# A+ S3 x  l( a  Loads are processed by each operator for the following time:
$ I, j2 @0 v$ D% N% B  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! |6 b$ W2 L8 L6 N& A; d4 |
  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$ b4 E- \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# N5 m% [" I% Z; T- [1 U) 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.
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问题:/ O7 N, u4 k; h
After running the model for 10,000 days, what was the average number of loads in each process?
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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. T9 d4 M' {' G7 C0 D
move into Q_wait /*Capacity is infinte*/
% |8 {, T( d4 e* _move into Q_process /*Single capacity*/% N; D1 a* a" t1 Y& w* c- N
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use R_A for n 60,10 min /*Resource A*/0 e8 Z6 e  i: ], i. r1 n
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send to P_B' {9 P% I* T, S( Z+ i" T4 C' T
end" n" U. U# Y! o# {' X9 h/ ~, {
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P_B and P_C is similar9 r+ F1 p* y6 K2 t' H1 F- q2 {
triangular 30,60,90 min
) S  J5 R5 d! Z% z7 [5 Y1 E! qu 60,30 min3 q, ]  R; I# h2 d0 A, j

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9 q& o) h3 p# |5 t# c' P, S2 v- l. Oin P_C, you need to send to die.' D( F2 {1 j7 p4 \

/ G/ E9 T' F# t' iThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 P* W3 \8 {4 l6 N8 x! l9 b2 H

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( }1 T3 ^* C* D1 x4 S) ~- d# {6 GRemember 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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