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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,0 E. y; z; P! X8 F) `
  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.2 g) D0 x4 W7 p- ^- p
  Loads are processed by each operator for the following time:
! l( W2 f- e, v( n  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ L# h2 _" R, q- [  E4 f" J  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.) g. y5 i* B4 X+ L) O2 p$ n
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# R9 q. ]' S( r0 N! ?
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:2 ~9 C& E0 b2 H" r! S
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving! t5 @, k; R5 o0 \
move into Q_wait /*Capacity is infinte*/
3 o: a0 q7 R) O8 n2 U8 Dmove into Q_process /*Single capacity*// `$ n; a, k; n4 M5 A0 J

9 a7 o  j3 S/ K0 l' O/ [# ^use R_A for n 60,10 min /*Resource A*// A2 W5 D( ?4 l9 V2 N

7 c1 N) h% Q( q8 Osend to P_B
, r1 t( f; P! z" b' C% Iend3 ~) h) T2 {+ k8 _. M% b

' W& ?/ W2 T8 x0 YP_B and P_C is similar. M4 q7 [4 t0 a1 W$ S8 l8 r
triangular 30,60,90 min5 |, x* H- }; m
u 60,30 min
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+ B# }( j+ \$ a2 a6 Bin 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. o, t9 j& m$ E( H' [: O

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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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