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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,1 [' f& p5 o$ F9 V2 I
  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.' {* J& c  m8 d! i9 n
  Loads are processed by each operator for the following time:
; d" ^/ A5 J. J) G0 N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 m- x' Y* L" f+ `, T/ b  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.
! s8 s4 ^( h7 ~6 s- h, r1 u& W7 v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.; J. ~& A5 p3 f) l* |" l! O6 Z
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.0 B9 q# x3 z5 b! _8 L1 S3 I! Y
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问题:  F5 p7 G; `6 ~. K6 W/ X
After running the model for 10,000 days, what was the average number of loads in each process?
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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' Q9 d! w. N, H6 S7 }
move into Q_wait /*Capacity is infinte*/8 @9 j( g0 h' o( }+ q! J$ `9 O/ C; e
move into Q_process /*Single capacity*/
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9 L- k) j" a* F  I, A! }use R_A for n 60,10 min /*Resource A*/; i! T* D. [- A3 c+ Y! U5 l
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send to P_B
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- D9 z; s2 U2 eP_B and P_C is similar
( V8 E- V- A; ftriangular 30,60,90 min  V+ V2 D6 j6 t
u 60,30 min
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.$ C: H' K& x( Y3 g3 Y0 n, R* N8 Z
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. I5 |) N; T* p: U: W3 p, H) \Remember 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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