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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,% ]+ R6 Z8 Y7 @0 a
  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.
& q3 C; d6 ]" P# s) Y. q  Loads are processed by each operator for the following time:
0 Q  C* h* i  \# A+ l: k( i4 }* z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 T( J) _1 q, r0 r( i5 x- Z
  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" I- h0 I0 f5 s" D1 o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.4 C. }" `& b- c
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.) b6 n* u7 p' T) g
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问题:
! i) f- U8 `& p* k; D# g" [( q0 _After running the model for 10,000 days, what was the average number of loads in each process?7 [& K2 F1 Z2 y! @  C! l# _, |
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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# R0 r" ~  C7 |4 ~% f2 x
move into Q_wait /*Capacity is infinte*/
- z/ o; e0 {( I' M) @' m7 U, _move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B9 I# h1 b  Q6 X0 x1 A
end
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( y* Q; [- B0 C/ |P_B and P_C is similar) x. ~  ~+ z5 M5 t* K
triangular 30,60,90 min3 y( R0 x! s) V/ E: ~* g2 h
u 60,30 min* c/ ^. z) F2 y
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in P_C, you need to send to die.4 p' A; \( T- o% V' g) ~/ }
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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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