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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,
4 j, \. G$ o' o, J9 R5 X' {  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., i9 u. L  D  c) n: u% p6 i6 J4 n
  Loads are processed by each operator for the following time:
" m, g) C4 r. h0 D1 C% x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ R9 p3 Q. E- R' _  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.# D1 F3 a5 p  ~" P5 J3 k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! A" J5 ]7 g+ a' c8 vSend 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.: C7 M# ~2 W8 ^# i+ c1 G
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问题:& `) b' y/ o. x7 S
After running the model for 10,000 days, what was the average number of loads in each process?5 V+ j- z' I3 D: ~

3 K& p" _6 W  S, c不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 i9 i9 I1 ^/ v5 m( U
move into Q_wait /*Capacity is infinte*/
8 a! E' b8 S; R6 ]move into Q_process /*Single capacity*/
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. Q/ e" {$ n# A. u# R) Fuse R_A for n 60,10 min /*Resource A*/6 m5 x$ l" L( }* G% w
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send to P_B& e' m0 W2 H: o: B: ~( `
end. h6 Z. x! x$ w5 Z# N  L

. \/ U2 Z; h" j  ?! OP_B and P_C is similar5 R( w8 z% D9 h; Y
triangular 30,60,90 min
0 c+ e$ R4 k& M, l2 E, @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.3 j9 ~# K$ r. }  z( V4 j

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! }' e8 L( a# P6 K3 S. xRemember 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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