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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,
% z' _# e3 n1 V! y# ~7 a  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.
( e4 b1 u; Z5 {6 V5 [  Loads are processed by each operator for the following time:! z0 a: w4 J$ V+ L! n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" d! B# Z* ?+ g2 c9 T7 @  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.( y" {4 v: u+ y" D9 _0 X5 ~
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." u) _* w: a9 x& @! S
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:
7 K9 L) k, O0 mAfter running the model for 10,000 days, what was the average number of loads in each process?0 K+ q7 O: r, J% w+ {8 b. D, O

% U0 C1 N1 Q' j8 R6 s$ }3 g2 K不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; ^# b: o- w8 K( h* Y8 k6 s/ R6 kmove into Q_wait /*Capacity is infinte*/) ^/ U/ A! i4 f# m4 K
move into Q_process /*Single capacity*/( ]0 A! ]8 x# p

% |, ?( e6 |, Q& b  {  W9 tuse R_A for n 60,10 min /*Resource A*/0 F( d7 i4 a' d, K/ n: Q; w

# g8 }" g( b0 B8 V5 [7 u' ?/ @send to P_B
/ T, @9 \2 e: g  P% t8 o$ jend
& B! `8 V, ~/ J0 ?6 f7 Y
; G6 D" W" h1 y0 dP_B and P_C is similar
& v$ r& ^6 E* B1 g- I; ^( ptriangular 30,60,90 min
8 s& r, W+ P) Ju 60,30 min  [  x0 K8 [; S, {- U+ Q
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, R! Y/ i' ~4 s% kin P_C, you need to send to die.3 Y9 t- B9 I2 r% N& Q4 m

. D; `2 t" r5 x2 d3 }Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& E$ s- L; h5 F& Z4 I

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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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