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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,
$ n0 I+ Q. @. u5 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.
6 O2 h( x; j; [8 |  Loads are processed by each operator for the following time:
# D6 v4 Y, e: @/ V3 {  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- F, d; s; L# V5 t( V5 y- I
  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.
' \; A9 r0 q' P$ z2 I. ]! h. J  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. D' H; G7 h* \# uSend 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.* Y" z" v% e1 `( Q/ L
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问题:" c3 j6 H6 }, o) J1 i
After running the model for 10,000 days, what was the average number of loads in each process?7 K; F) o% j# }8 M  U6 {( f
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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
- o  k2 D( M) J7 J# Mmove into Q_wait /*Capacity is infinte*/  }- L0 S5 f0 }: d9 W
move into Q_process /*Single capacity*/! ^, @' P& ~5 k" _1 X

" h. V" @; k# A/ Muse R_A for n 60,10 min /*Resource A*/
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+ ^3 f2 u0 m3 O- h4 u( C, lsend to P_B
  c# g  ~; v/ S5 @; mend  o8 i  H! H: n% P6 w
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P_B and P_C is similar
6 Z9 A2 |, E6 V/ J, e3 h1 ftriangular 30,60,90 min$ G- Y$ W% i0 i1 N
u 60,30 min
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- W( t5 f2 @5 U6 fin P_C, you need to send to die.
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4 e4 ^) F6 D  Z) p. oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& x5 r. J5 r7 R6 Z% C9 q- ?
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8 d9 X) b, F5 y8 w. vRemember 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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