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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,
& h5 K4 x5 g! F' 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.
1 ^) ]: b9 z/ \* a8 f1 C  Loads are processed by each operator for the following time:
3 b' c5 U3 z* p+ `" ?! R: R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." c' t: x- ~+ Y" G! E. k' Z/ 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.
( G0 \4 r9 ?3 p4 |6 W+ h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( f& `4 c0 w; r* o
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 E7 X  c; i. @  h4 T/ A+ S6 R3 HAfter running the model for 10,000 days, what was the average number of loads in each process?) y0 z3 A+ [4 S2 C% L$ v0 e

" ~* J0 E  I; g: z' [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! u& T* g+ _! S. s* S+ a) ^! I
move into Q_wait /*Capacity is infinte*/, h% C0 r9 x' o
move into Q_process /*Single capacity*/  e" ]6 F* g9 e" _

+ c+ U0 D  t# q' u) x: Uuse R_A for n 60,10 min /*Resource A*/1 l' L9 H* k) k- s5 O+ U& K
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send to P_B$ W: W; F8 ^8 w) D* J
end- r& Y5 T' O1 w+ a* z$ ?
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P_B and P_C is similar
: z8 s7 I+ M5 Ntriangular 30,60,90 min
6 {# E2 u& Z1 _u 60,30 min4 i9 r4 h. t' g- O  K
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6 `% g: [! [. w* O  K& c1 u: Win P_C, you need to send to die." c; D& E9 ^2 A2 b& v2 |

# \3 X& R! P' {" ^) RThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.4 }9 z+ i% j7 _% V4 d* B* ~8 n; ]" E

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4 E6 A! ?( |& x; g' c7 u$ k/ \# ~, h+ MRemember 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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