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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,: S, q  y- v7 r- a( P1 P
  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.7 \! l- a' c! w: r5 [- E' `5 i
  Loads are processed by each operator for the following time:
6 i+ C% n& l5 v% V( \  h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: _8 _' [! u6 m/ y' Z! {  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.
. _2 q5 Y% `$ {: X; n/ R5 b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 K9 b  U- [( L! b! z, N
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:
' E+ G; Q* ^' XAfter running the model for 10,000 days, what was the average number of loads in each process?( r) N0 m# {6 D7 C8 w3 Q% X/ J6 N0 ]
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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 arriving7 F1 l, C9 ?5 d, R1 r( Z) `
move into Q_wait /*Capacity is infinte*/
3 \# ?4 M: y1 G- p6 M# \5 q9 Lmove into Q_process /*Single capacity*/* E6 ]3 y2 L( e+ B1 l/ Y

; o+ S8 [' `' Y% j  I4 Z& guse R_A for n 60,10 min /*Resource A*/
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! ?- y0 ~' M! j: \send to P_B
8 S) ^! H2 y- \! p- Aend
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P_B and P_C is similar
; y: n$ [3 g' ^$ C; A) l1 x' @triangular 30,60,90 min- }! d( S3 V! \' w7 x, i
u 60,30 min" d& a+ K( l& c) m8 j6 M

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! r, L* H7 ^0 t0 W6 ?$ qin P_C, you need to send to die.
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9 K9 t' \) ~' b/ {" ^Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 F9 a0 ^. V% V
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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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