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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,
0 U3 ?# z# D" R# S6 K3 V$ @  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.
; C0 W/ z) z- I  Loads are processed by each operator for the following time:' o! x0 g$ v! D% X: R" ?8 q& C6 c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: J; T$ @1 l- j7 R) c, V" g
  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.
. M5 ~0 [4 Z/ b% ^8 _# X' S  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. ]* _! i. @" G: [9 l. 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.! x# f. i, G" N% F: Q
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问题:, I: h% _% Z0 i4 {, x! F; g- v) Z
After running the model for 10,000 days, what was the average number of loads in each process?
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8 ^% Q9 X1 @# Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# c0 Y* u2 V4 {2 G* R3 C$ imove into Q_wait /*Capacity is infinte*/
: i# |2 j; N0 \3 J9 omove into Q_process /*Single capacity*/5 b4 U% T4 _; n0 d( o* g  M' J" K
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use R_A for n 60,10 min /*Resource A*/
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2 p! G! m# p; @( R/ E. R/ fsend to P_B
& q) z3 ^  B# L* zend
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) K) v" c$ i" |+ @1 e. dP_B and P_C is similar5 o) b% d" K1 v9 g* u
triangular 30,60,90 min$ m* j( h2 w% G) O% K7 u- y( K
u 60,30 min1 m; i8 ^4 w6 q, x. F+ i1 j; S

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( f8 d' T6 I. w3 P% hin 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.$ s) L- ~2 O  a7 d6 R) I( b

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+ s3 r/ X) o! a/ B/ K* f0 mRemember 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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