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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,% P$ l0 M2 a$ @5 i' E# K
  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." F( I2 h( F* ]. s
  Loads are processed by each operator for the following time:
. Q; V; k/ i: I3 A  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  X8 h( O# \# m( k
  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.
/ _# m' f' I: P) q3 k. w  V" U/ w  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* ]. W6 g' y  U! m# s- {
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:- b& t) n2 M0 D: u
After running the model for 10,000 days, what was the average number of loads in each process?& {; x& e' L$ \5 |

% W7 I( {' e" o不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 {4 y" R  W# o  D6 u7 R5 @
move into Q_wait /*Capacity is infinte*/# o. r( S/ q" P+ Y, Q) G3 P/ U2 R
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/4 u, S$ p4 S  T+ J& N* _) A
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send to P_B, s1 A: g) ~5 L0 i$ ?
end
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P_B and P_C is similar4 e6 e- e" S/ k0 f0 m* v8 C
triangular 30,60,90 min
+ a7 o/ d( p8 `1 _' Wu 60,30 min3 V5 M4 y8 z, V! s& B
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in P_C, you need to send to die.: w! ?% Z, q- p7 T6 `9 e
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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.
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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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