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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,
, K9 o2 z! H7 }! ^9 ]  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.+ l$ F6 N3 z5 E& e( r& W+ a; ~
  Loads are processed by each operator for the following time:
8 P8 b1 i. u! f9 m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 K+ l' U. M7 `" V) L5 K* O7 S9 d  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.
9 g0 Y$ W* z- k- M  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& t- X* t; E# N2 _
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.: D# a% V8 m) W0 ~8 j

- e; F! `+ t0 H5 Q问题:4 M9 p( o+ J7 D3 z3 R/ r; P
After running the model for 10,000 days, what was the average number of loads in each process?) O' v+ \( a# S0 F" \
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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 arriving0 m8 @9 x) Z6 y0 }9 T1 ?. d
move into Q_wait /*Capacity is infinte*/
8 e5 x. Z& ]% S  @$ Fmove into Q_process /*Single capacity*/: ~0 T( P+ m( [# Q& |
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use R_A for n 60,10 min /*Resource A*/2 d1 f) }- i& S- w# u5 P0 @0 G/ ]  C
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send to P_B
/ k$ F3 T) n- t+ ~, z$ y/ \end
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P_B and P_C is similar9 M" ?* m# E3 V6 Z% t. A1 u
triangular 30,60,90 min9 D0 o7 F! D; h6 P( Q
u 60,30 min
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% V/ ]6 [% f  ]2 H; @in P_C, you need to send to die.
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4 l  @# r% \; f6 [+ l4 C# u$ G) aThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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: Y7 {7 d1 E8 @5 A# w+ `# Q9 hRemember 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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