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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,, L3 x4 V( k* E+ _6 b( d
  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 Y0 u  ~- d5 o% _9 L
  Loads are processed by each operator for the following time:
) F$ \5 |9 O1 B5 m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( _' i  f# S! ~( h5 q6 r7 l  [
  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.! ^) N: j0 Z- `1 @$ F, L7 E1 q) A
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- J* n( z8 }, y4 E, X2 `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.8 S0 w' Q6 B3 n4 u6 b
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问题:/ c3 N4 i! U* G# u/ ^* l  u
After running the model for 10,000 days, what was the average number of loads in each process?
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% L: n0 t% X. E% g不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
2 {+ L' Y% Z+ V9 K# I8 u5 lmove into Q_wait /*Capacity is infinte*/- ~3 _  c5 L9 i0 U' ^* b
move into Q_process /*Single capacity*/7 q/ w, @+ g3 E( ]4 E) X

0 M$ C5 G& E$ Y; A6 kuse R_A for n 60,10 min /*Resource A*/8 x. T9 k0 _# k3 n; Q

  W) k  ?! w+ n" i$ L) i' nsend to P_B
7 r: B$ d8 n' m3 Iend* y1 t3 r6 V8 |8 m" L* k% \  }

! W) f( M5 D2 n+ o  t* PP_B and P_C is similar
" j2 ]/ w2 y* H: _6 d9 `triangular 30,60,90 min
0 J. Z5 r+ [+ `2 cu 60,30 min7 Y! @0 ^- C: ]/ N) i" \4 n4 s
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+ X# x, S2 ^  L0 xin P_C, you need to send to die.
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( L- `  ^0 _+ P( a7 _/ z% BThen 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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