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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,8 k) O' l& I" w/ U4 J1 u
  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.7 |% s' I, m0 P6 i
  Loads are processed by each operator for the following time:
5 c# Q# t/ U8 Z: H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.: \! e6 }' o( e. i6 B' Q! }
  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.+ \# Y8 K4 s( t8 _4 |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: s: R' p+ |  F& o( M: x) a% 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.3 f, c) y7 ?% g9 J& B
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问题:' ~% `  ?2 f% b& ^% x2 q1 U$ I1 g
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; H& I% n( @: z" q/ s9 S8 wmove into Q_wait /*Capacity is infinte*/
1 v# t  x1 i4 g4 i2 Emove into Q_process /*Single capacity*/" p/ @: @* D' e. ]$ Y* D5 ~( _

1 Z, i$ S9 q, p3 u5 |$ wuse R_A for n 60,10 min /*Resource A*/8 G  \2 v) V5 I3 A$ Q: q+ v$ F
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send to P_B
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7 R- L# h( J9 ?7 S0 M* G" q  E! OP_B and P_C is similar
/ Y8 }% F; F( ktriangular 30,60,90 min# U( a$ S& q8 G- ^- g& ^
u 60,30 min6 z, ]/ S5 Z/ ~9 M6 T3 N/ s
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in P_C, you need to send to die.9 Z8 |9 n9 Y* }2 ?5 a

0 n- }/ _3 ?0 d. t2 w3 Y9 \$ sThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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: Z: h+ O. C2 g" S) ?$ nRemember 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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