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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,
# r: Z' ]/ }; i  K# s! U0 {  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.( M. \+ S  f# g3 U4 X: G
  Loads are processed by each operator for the following time:0 l( y" z$ [+ r
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; Z$ x* q) _$ D' c/ v' ^  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.
9 k. `, K% x" Z: V) j  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." k) z1 V# q5 X" J7 T+ y8 s9 _( }4 i
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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8 [$ _. [: b9 v* ~问题:, Y- ?4 x% o& R6 v5 G) C
After running the model for 10,000 days, what was the average number of loads in each process?$ J( x( X6 r9 J* @9 W

7 e8 U# u( }$ |" q3 v不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 r& M  e' ^- A* x, K& ^) \! S
move into Q_wait /*Capacity is infinte*/
- h0 {& V/ P# Q* B, `move into Q_process /*Single capacity*/! _- Q! r9 C1 |$ s$ F

+ Y( `) [7 Q5 d+ e5 `$ m0 {. guse R_A for n 60,10 min /*Resource A*/5 o' H3 q9 p0 r) W( x& k$ Q0 D
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send to P_B$ G+ J1 L+ p! M% x' W
end+ q( o, a/ v5 x
2 ]% ^  C) i  D  w. B
P_B and P_C is similar8 G: o9 n5 w$ C8 H5 l1 w
triangular 30,60,90 min
4 {& E3 Q0 K8 ~4 s, p7 b0 hu 60,30 min6 T+ X$ y  h' U, {2 t
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6 j1 c, ?! O# Y0 s7 ]' {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./ Z; `, Y" G9 E* z% w, w
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  \+ H' h* R+ J, ~, K. F# 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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