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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,
( }; F, @9 r2 ~0 `8 G- p7 S  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.
- R! J0 Z# E+ P* `" F4 J" q  Loads are processed by each operator for the following time:
9 x2 J) [* L' ?- j  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 Z8 y: T4 D# B% X' }/ ]( Q
  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.
# Y/ l$ S3 w' e( @( Q  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 p/ q- L0 D) y& Y5 Z
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.: A/ h3 u/ G0 G3 _$ z5 }( j
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问题:: C$ ~2 o) p# k. d% S2 F% e
After running the model for 10,000 days, what was the average number of loads in each process?. d! C7 ^. y7 y& B) h/ u  f5 B

: U4 u8 A1 O. z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
& t2 [+ S) \: Z( a) ~move into Q_wait /*Capacity is infinte*/2 N: w; j. h" H" b
move into Q_process /*Single capacity*/7 ]1 R( j1 `/ k$ f4 B6 j

# b2 \0 \+ b; V8 k- N/ kuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar: d" p& q2 n: J5 \
triangular 30,60,90 min
# |' e2 S& }" t, n* su 60,30 min
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in P_C, you need to send to die.
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1 P8 x" R$ k) P$ oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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