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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,: u8 B0 q) G. ?; g
  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., K8 }0 Z3 F: ?9 ^+ u+ y" y
  Loads are processed by each operator for the following time:
8 S0 o2 M% d9 Y$ h; u- Q( R' t0 H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- J6 o, v7 Y7 y" y- a% r
  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.
# b0 K9 I7 Z) f* A; ]3 W  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: j1 c- `  ~* `& U2 xSend 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.; j  W$ o& J1 B! s" O( F

' s# w2 _6 u# D; ?/ S问题:: X, |8 `; n$ w8 N0 M: Q
After running the model for 10,000 days, what was the average number of loads in each process?0 q& C. G) a8 J) m( u4 H

9 s3 U6 Q4 y) {, S% Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving# s# o7 Q7 t* s$ c8 I; A+ ^( F
move into Q_wait /*Capacity is infinte*/
' s7 ^- O" K/ C2 Q% b4 _7 l0 {- b" Hmove into Q_process /*Single capacity*/
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6 e5 p( {* Q$ \: q5 huse R_A for n 60,10 min /*Resource A*/
% |  i' P  ?; R
0 n" c6 R, {7 Y# Q" r, I( usend to P_B
. Q+ u8 w0 T2 X' M# A& @! yend
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0 _4 P! W) O0 B$ C: k# |: D. jP_B and P_C is similar
$ Y9 J# s. Q* a3 a- o! ?triangular 30,60,90 min4 @2 H# R$ T1 Y6 N7 P$ P5 o) S2 f
u 60,30 min
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  Q+ k: N6 g% v; x' I; c+ i4 h$ A2 p9 [1 z9 k
in 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.
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1 F( r8 R4 x4 s* T0 sRemember 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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