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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,9 k  n1 D# V, b  O
  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* r! E1 ?0 y: \& ^, [
  Loads are processed by each operator for the following time:
1 U3 p  q* u3 p9 C$ t" u  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ \4 X; X5 O$ p; y* F7 N
  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.( H; Z/ [" n* t8 G8 E. G
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 z* z3 r; i. Y( z' m5 j  x  F. L
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.+ |; e7 w8 o, ?9 ~2 s6 H

( |3 X- K6 I6 J8 ~5 j" ]问题:3 d( a4 W6 B( R
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
0 R9 H4 i& L9 f& y# Pmove into Q_wait /*Capacity is infinte*/) S1 J" S: p: U  M+ K0 {" _
move into Q_process /*Single capacity*// |: `# B6 j$ P0 u9 v3 r

- B2 t( \* J2 k9 a% Y. luse R_A for n 60,10 min /*Resource A*/6 e( J7 |; u1 J
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send to P_B7 g* ]) I. U1 L% H
end
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5 t8 e% h6 A9 W) h' R, l6 MP_B and P_C is similar
) Q, L1 ?- v/ p5 c4 itriangular 30,60,90 min
, L3 V6 F6 N& ~$ V" M; wu 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.  G3 Q% d- {  [' _6 e4 \

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; X- t$ g; X( P0 ?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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