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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,( t$ t1 Y6 k! J3 T
  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.+ w/ \: E7 @9 }
  Loads are processed by each operator for the following time:) `* X7 E5 B; ^/ h+ c# y1 @$ d, l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 e6 [2 s- S& R5 K6 w9 T' [
  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.
1 b1 y) f* q( C3 l0 R  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 V* o, V, a( m% |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:5 G5 F; e. a; l% I
After running the model for 10,000 days, what was the average number of loads in each process?. F0 ~7 q" _0 ~' y& M4 z( t
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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
0 _2 g1 J9 ]2 c( t) H# tmove into Q_wait /*Capacity is infinte*/
+ f7 }0 h5 h% v8 q' Amove into Q_process /*Single capacity*/
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, h+ _5 u" y9 X& a% u: {use R_A for n 60,10 min /*Resource A*/) Q% k/ g; \2 N/ }" ~0 ^9 H- i9 U
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send to P_B
8 [8 _5 x- W5 B) A# bend
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/ x7 T+ @" K: H" U6 B$ B3 X+ S8 kP_B and P_C is similar
% J. i" Y4 A) [. C4 F, P' ktriangular 30,60,90 min
$ C# l" R3 @" x8 s5 f* s: _u 60,30 min
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9 b  d) K- I' y* }. hin P_C, you need to send to die.
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: h4 X- A& U* B5 Q, k2 X6 SThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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9 l+ q2 o$ K5 vRemember 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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