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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,
/ m( x' ^0 k/ U4 w, }  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.
( W" l" {, }  D% ~' u  V+ h1 F& O3 g  Loads are processed by each operator for the following time:- y1 I( C5 v+ a# N8 o# y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ i0 l0 _, v3 x8 t6 n# [' y  D' 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.
% J1 p/ C3 y! u3 P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 q" e5 B% i, m8 w, p2 M
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:
6 `0 x" f5 U* [7 {$ b( PAfter running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: G0 p* p* b0 Q. m1 xmove into Q_wait /*Capacity is infinte*/
4 j) Q* b7 X3 Vmove into Q_process /*Single capacity*/( W7 u! V; K  `4 d

% y: \* L! k/ M" v4 M( W0 Ause R_A for n 60,10 min /*Resource A*/
* G8 {" `* B* i! {6 \, T; n) g  C! O
send to P_B
/ }1 j$ b& O( `3 G; d' jend: h2 s4 k1 R! h# u- H  m

: Q" ]2 G# [( Q" ]5 k9 L. \P_B and P_C is similar
0 i4 q8 Q* o1 W3 p5 r, Htriangular 30,60,90 min  @( T4 Q# ~7 o; }! M
u 60,30 min
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in P_C, you need to send to die.1 ?: u1 D5 R- w3 a# m
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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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6 h" r4 _, c2 g1 f4 dRemember 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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