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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,. z6 M; D' w" g$ I: [5 k
  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.
1 ~' ~8 ~! X& ~  Loads are processed by each operator for the following time:' j; r4 Q: U0 z$ |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 |( ~: \# P" x: K. S4 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.
6 J  ?. }  ]) U( Z* ^. o8 s# f  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ U* F3 n" A# i- I' U! [
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:: G; ~6 E$ n, n
After running the model for 10,000 days, what was the average number of loads in each process?
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# a. S+ O9 [: l" ]不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
0 a2 i6 D0 P! A0 C6 C2 D! E( T" Pmove into Q_wait /*Capacity is infinte*/5 F6 C0 ]  @  j1 j
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/2 ~7 V7 R5 k: G: @: _0 V* A

" n3 f( d& ~% g9 Bsend to P_B
) h+ \+ `' G8 ]: Z1 yend/ Y8 `6 b5 b; {5 `  b

% y+ x! R# M# E8 C6 C( k: CP_B and P_C is similar
0 d7 t% H2 Z! @' W$ _% Z8 xtriangular 30,60,90 min( x: a* T# P- z+ O
u 60,30 min1 h9 Q0 y5 e8 R# ~

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2 E/ z! @! `( b3 B6 G. B/ Yin P_C, you need to send to die.; S5 v; {3 W& p. D2 a, s) g: S: M) f
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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.3 O( V9 U! [0 n0 k4 X9 m0 }2 ^
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, [9 U0 |' x& zRemember 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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