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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,! S' d2 ~. H" I4 l6 n+ z8 e
  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.. M$ x  Q1 M6 m0 q- B
  Loads are processed by each operator for the following time:
: O5 R0 ]& `4 u# J8 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 z. h' H8 h# s3 J; z% ^6 z  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./ r  K( `; o" D2 R) h% F" L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 i% I$ \( y  C( K& g& a9 J
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:
+ ?7 B" a% Y& c6 x2 i4 AAfter running the model for 10,000 days, what was the average number of loads in each process?& }2 h; H6 @  R# c* L& J; v5 R; M
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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
1 `- c7 L1 n5 u$ S7 G! p0 pmove into Q_wait /*Capacity is infinte*/
' M, U7 B2 H$ n+ O6 @move into Q_process /*Single capacity*/
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use 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! Z9 e4 N3 K& i/ O
triangular 30,60,90 min- w4 {" B* l: b( E
u 60,30 min
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' ^+ K$ R4 l# _: k* J
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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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