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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,6 }' ]# W  W8 H' |6 N6 n. ~
  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.
/ N4 s- T- O6 J, b$ p  Loads are processed by each operator for the following time:0 ]; [0 N2 M& f" u3 [" Y4 m
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 P, b# t9 F5 Y( v. E! D
  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.
: P& @6 N) o  v/ U  T' K  e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' r7 r  h" S$ x* A2 E) N3 t0 S  x
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:
/ {$ O# M. @; f' V6 [* TAfter running the model for 10,000 days, what was the average number of loads in each process?. g" |  p: {/ j1 O+ Z& Y7 }$ Y
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! Y. h& r- B0 l- F. P$ Omove into Q_wait /*Capacity is infinte*/
4 |3 V1 O6 M. `$ b: G$ s% m1 r7 mmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/( N% X2 R4 X; m+ j

% v! R% g9 N) K7 I' C: A* `" Gsend to P_B2 a) Z, s0 E% H+ A* Y
end
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& i1 S; j* K. ]3 W- CP_B and P_C is similar( M1 z4 c4 b5 l' \7 c% O
triangular 30,60,90 min
: W( _! X& M& H# u' }- q# Nu 60,30 min: ~: {5 w) l0 _: p6 L# p

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in P_C, you need to send to die.8 x9 X# L7 X) E$ H$ G

% F1 G) @6 [9 x7 u) n& t" pThen 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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