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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,
+ a9 k. M( ]% A2 b2 }  n$ |  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.
+ f6 }9 I4 G# [7 F, z2 z  Loads are processed by each operator for the following time:" {+ x1 S: Q6 n& [$ R+ s$ a( G- P
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' c% ?! M- U8 X+ g" q  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.* g  r- k- a) O  C7 t
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* T4 O( |9 z7 Q/ t+ O: i/ T( u8 z
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.5 E: U; y- `6 Z' w% N: k. T3 G& h1 z

2 m& }0 n  V5 m  l问题:
6 i7 b4 h' S: K/ u# y  y$ b" QAfter running the model for 10,000 days, what was the average number of loads in each process?* \8 m5 `; J( f' i+ b: @, v' n! f/ @

9 |( g" ]. W% H9 G* i. |不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 S& l9 A* `# t* V
move into Q_wait /*Capacity is infinte*/$ B, k; q$ K' X& n" ]8 k4 W
move into Q_process /*Single capacity*/
# B, T& f4 M/ n/ X( h" m0 T$ P" m9 u) }1 I
use R_A for n 60,10 min /*Resource A*/
* e; \; N7 X5 @# x5 o3 K; h* x1 e/ F  H! v' _+ F: X- ]
send to P_B
+ i/ k- o! ~# P* |# aend
% V: @8 V. Z7 f- Q1 ~( X% ]1 k
# E( X3 t$ R6 G) LP_B and P_C is similar
& \9 n8 E% q) p- J( W. S/ ~triangular 30,60,90 min* e2 O& E$ J$ [- @8 l
u 60,30 min
5 x  Q* V8 p  P
% h1 H% f1 v7 |3 g0 K5 U+ ~, Z$ d( N3 s) J: b! x" _& `, m
in P_C, you need to send to die.2 X! y. M& E- U" y

; f' O# B. R  E, B, XThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days./ y+ M' O" b) M

+ J+ r0 x+ P6 ]7 d; \9 X
$ @- f) y& W+ M$ }1 FRemember 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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