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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,& u+ y/ N6 ]3 p! J9 X
  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 _: m$ `3 i+ R4 [( a  Loads are processed by each operator for the following time:' R* a( t8 T; m% |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 A" L7 b, O$ [! E
  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." ^/ g4 |1 S! u1 _4 B
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ y) T7 G/ g" {$ h- o! Z( i$ @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:
" L* k# l! s& e9 K2 Z, qAfter running the model for 10,000 days, what was the average number of loads in each process?% a( q% F! _8 P6 {1 l2 L* V1 p4 F

! l4 l% A7 n7 y; a不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" H/ R" Y: Y9 Z; B* p5 I+ J
move into Q_wait /*Capacity is infinte*/! E' v! j8 r; k7 v' v3 |2 M
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
1 ]8 S8 M$ r: ~. x, wend
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$ _0 H& i0 ]: @5 h. QP_B and P_C is similar
, T! `1 f( l( q5 C) x& M( Itriangular 30,60,90 min
2 X- g0 c/ _2 f$ F7 o2 fu 60,30 min
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& N; b: w' [3 g9 t  n+ b7 L' ?in P_C, you need to send to die.
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2 B8 k' ]2 J9 h5 oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., ]* e# M  J3 q
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5 f& H7 b( ]. |" ^& n, yRemember 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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