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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,2 U, s/ H4 y& c$ k' x" U& z
  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.8 R( S4 {  \* T! L3 w
  Loads are processed by each operator for the following time:6 x3 E+ h5 c( E8 C. X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 ~4 U- S" x4 ~, X+ S! m  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.
+ C. A* X# N9 U. u8 g3 G0 a9 ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 a7 a( N/ g( cSend 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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: u$ Y- ^) C) {/ e8 Y! N7 b1 j( Q问题:
. h0 D! R( L, M2 j8 BAfter running the model for 10,000 days, what was the average number of loads in each process?* _# V/ W- Z1 `0 W" h5 ?

+ C  W% b! c: |: N不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
' @& T, H+ T. g  z# f* omove into Q_wait /*Capacity is infinte*/
- @% i2 e2 d3 D3 ]+ f2 xmove into Q_process /*Single capacity*/. e3 M, @6 F" N' Y* o4 E

2 ^. u" w% E. q3 K2 l& Z$ ^use R_A for n 60,10 min /*Resource A*/
- S0 [1 o5 u2 k7 I( V$ ~6 F/ Z2 N. F( Z4 x7 w& b6 R3 ]
send to P_B
4 w3 L2 D" R$ E: }4 k$ J1 c! \end, \8 B) ]4 P- S$ x" {3 x. q  G

' B1 p+ P6 Y) n! n% G! }; x( SP_B and P_C is similar
& l2 x# N$ K0 K2 striangular 30,60,90 min
' M; }( k+ w$ _u 60,30 min! f/ }% D- F- g( T- M- m5 P
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1 f( e/ U1 @/ }) A0 j
in P_C, you need to send to die." T) z  ~2 a, v
/ f( o* B8 D9 c0 U2 g+ r
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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: P% S, \1 a) l1 [! gRemember 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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