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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,/ v  A! U3 ]2 Q- ~* ]1 t* S8 Q6 E
  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.+ ]/ w& R8 p( q- M
  Loads are processed by each operator for the following time:
5 ?1 F# X3 }% C2 P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 I9 [3 N! R/ y2 p) [
  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.
+ |/ W' J, @" M  b% ^% a2 i  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
# K; f; H  G. ?, U2 v# r, @, jSend 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.* a9 |: ^) ~% s2 Z& W: j; f
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问题:
4 _% u) A( Y+ @5 }8 n4 Z' D& t1 q9 kAfter running the model for 10,000 days, what was the average number of loads in each process?4 z4 f& M6 B# ~. x/ a4 @

, a- X3 b2 }1 \7 G% u  Y" Z3 p不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) i1 d) L3 |: i* Tmove into Q_wait /*Capacity is infinte*/
5 ?' P0 w' }) n. S5 d$ t; g# O* _move into Q_process /*Single capacity*/
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4 y, ^/ r8 N7 x" V8 m+ Y' _7 R; M- ~1 Quse R_A for n 60,10 min /*Resource A*/
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1 f& u! s0 M$ D% W4 B/ b3 D& G1 Asend to P_B
1 p# S7 A6 O7 P/ n% _9 y' o; oend
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P_B and P_C is similar/ N% }9 e3 b" }5 F) ^, d9 ]
triangular 30,60,90 min
. ?7 U4 _7 `% J& @u 60,30 min
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% c% V) Z% T& f. cin P_C, you need to send to die.
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: d5 N0 ]' M! ?9 NThen 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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