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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,
+ B- g2 W) A- ^  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." {8 r+ U& r$ b
  Loads are processed by each operator for the following time:
% P! I, C( G/ `  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: D! s% j$ f6 j+ b# ?  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.$ t1 L, B7 @- {  J& P+ \$ ~" K; ^  \
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 f8 V! c: P4 s- M. z* d$ X  BSend 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:
) C! }5 k/ ]& \2 r' H6 AAfter running the model for 10,000 days, what was the average number of loads in each process?  E1 O! P7 a/ Y

% O' Y( q6 c& l. f2 S不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: \* ~. B# i% X4 i! lmove into Q_wait /*Capacity is infinte*/
8 G& J+ n6 n5 o$ L5 p+ b  l" smove into Q_process /*Single capacity*/( l# ]9 P2 A& e' M$ q; ?
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use R_A for n 60,10 min /*Resource A*/
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send to P_B9 y; A. y6 ^9 j/ q. o9 u
end
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) h" k0 E: `  [5 r) \9 _P_B and P_C is similar2 r+ @" ?) S! H, {3 j* c& k
triangular 30,60,90 min
% m& A/ \" U; r  x7 d$ Lu 60,30 min
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in P_C, you need to send to die.; M! i( w; H/ t% i& K  ?' v7 F

7 \" e' v& Q, LThen 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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