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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,
6 t% v+ s+ J4 F% L6 S. L  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.
; `6 k( O8 ?# l. y  Loads are processed by each operator for the following time:
/ ]7 F$ }1 M) F- D  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 [  a& r) @9 e/ A2 z# ]
  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.
" i0 J5 t! Z8 H* g2 A+ U2 x  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' k+ b2 ^, |- o/ T3 q1 j
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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5 b2 @1 s+ M& R* I+ a问题:
4 b5 b! M: ?. {0 RAfter running the model for 10,000 days, what was the average number of loads in each process?
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/ |" m5 d. h! }. M4 {不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving) e7 V  O" a" k$ x7 t" _$ S$ l
move into Q_wait /*Capacity is infinte*/
" f& R# k  T, f: C! h# y- pmove into Q_process /*Single capacity*// S7 ?9 o: d' ?! M

' L. }+ Y  k5 p( M+ Q) Uuse R_A for n 60,10 min /*Resource A*/
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0 h. T% [# h7 B' X; Lsend to P_B
$ b2 S2 g* z; }# n+ fend( L# i3 h3 h/ l. z

' m; J; N  }4 ?, I7 mP_B and P_C is similar
$ x4 ^" y& X( C7 htriangular 30,60,90 min
" {9 L+ J& Q* }' A! b- Hu 60,30 min6 N; q; R( p7 `( f9 |

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- {' z; Z8 J3 x( pin P_C, you need to send to die.
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1 t  `* y% }, z9 e; y. uThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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" C$ T. Y$ F$ 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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